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Outlook for Utilities is Up, but Leadership needed for Infrastructure Investments

January 13, 2013
communciations, finance, funding, infrastructure, Leadership, management, Marketing water, planning, sustainability, water sewer management, water supplies
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The magazine Utility Contractor suggests that 2013 may be much better than 2012 from a utility construction perspective.  In Fact they suggest a 13% increase in utility construction, although the bulk of that is in the power industry, not the water industry.  Their projections are for water utility infrastructure spending to remain roughly constant from 2012, a slight uptick from the recession years.  At the same time, the US water infrastructure bill was suggested by Public Works magazine to exceed $1 trillion over the next 30 years, requiring over $30 billion to be spend annually on upgrades.  This is more than double their estimates of current funding..  Many of these upgrades are pipe.  Much of the piping infrastructure in America is over 50 years old, and the condition may be unclear (unless you dig it up, you don’t know much).  But piping projects are hard to fund, because no one sees the pipe, only the failures.  As time goes on, the condition continues to deteriorate.

Much of the reason that water utility infrastructure is not expected to increase is that revenues are not expected to climb significantly to allow for the expansion of capital funding despite historically low borrowing rates and lowered costs of construction.  The reason:  many public sector utilities, which accounts for many of the larger systems, have been caught in one or more of several traps:  deferring capital to pay current expenses without raising rates, revenue losses from defaults on housing, use of utility fees to overcome ad valorem tax losses in the general fund, or political pressure to reduce rates.  All four cases can be crippling to the utility because it not only removes revenues today, but likely will result in a continuing practice in the future.

The good news in the revenues are rising, and that unemployment is down nationally despite the loss of 276,000 state and local jobs in 2011.  But since governments tend to lag the private sector in recovery, and we now have 34 straight months the private sector adding jobs, governments should start to see improved conditions in 2013.  Salaries are up, revenues are up a little and jobs are being filled, but what does this mean to infrastructure? The question is why the projections are for no increase in spending.  Water and sewer utilities owned by governments, are caught in the middle of the political process which lacks leadership.  These utilities are set up as enterprise funds, whereby revenues are gained from provision of a measurable service.  As a result they are designed to be operated more like a business, than a government.  But if your utility funds are altered through the political process, this can frustrate the efforts to run an efficient and effective business-like organization, which may mean the status quo, which is not investments in infrastructure beyond absolutely essential and emergency measures.  The question is where is the leadership to reverse this trend?  Unfortunately the political leadership focus is on elections, 2 to 4 years out, not the 20 or 30 year life of the utility’s assets.  As a result, short term benefits sacrifice long-term needs.

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If you are a person who wants to be a leader, you also need to think about the long-term impacts of your plans/policies and actions.  How will they be perceived 10 or 20 years out?  How will your decisions impact the course of the organization?  For utilities how has your tenure added value to the utility, whether that value is treatment capacity, public health protection or reliability of the system.  And how is it measure, since monetary value is not the only means to add value. Keep in mind no one remembers the guy who did not raise rates, only the person who did not plan to replace the infrastructure that failed. That’s a legacy leadership issue.  One thing many people do not understand is that while we live in the moment, it is how people view our actions afterwards.  It is why it is so easy to see leadership after the fact, but sometimes very difficult during the event.  The question is, how to we overcome the restrictions caused by the 2008 recession?  That’s where leadership comes to play.

SUSTAINABILITY THROUGHOUT TIME – BUT NOW WHAT?

January 10, 2013
communciations, Environment, finance, groundwater, infrastructure, Leadership, management, Marketing water, planning, sustainability, Uncategorized, water supplies
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I was cruising through Glacier Bay National Park when I wrote this blog.  It was just one of those inspirational momentsl  If you have never seen it, you should, especially as a water professional.  The entire park is a testament to the power of water and the result of changes in climate cycles that affect the hydrologic cycle.  I will post video of the journey separately, but suffice it to say that the inherent beauty of the place is difficult to describe.  Needless to say with a large concentration of glaciers in the area (most retreating), there is copious amounts of water (for now).  The Pacific Glacier has retreated 65 miles, yes MILES, in 300 years in part because of changes in oceanic moisture and evaporation.  The native people, Tlingets, moved and survived based on glacier flows end ebbs.  But that’s not my point.  Seeing this much water leads to an entirely different perspective, one that is helped by Brian Fagan’s book, Elixir which outlines the history of civilizations as they were affected by harnessing of water, or the lack of ability to do so.  Same thing applies to the Tlingets here.

Historically the key was to rely on surface waters where they were consistent, to manage water locally and carefully for the benefit of all, and when surface waters were not consistent enough to be reliable year after year, quanats, shallow wells and other mechanisms were used to extract water from glacial till or adjacent to rivers (riverbank filtration or infiltration galleries in today’s vernacular).  Or people moved or died out. The ancient people did not have the ability to dig too deep, but were creative in means to manage available supplies.

Contrast this to today where over the last 50 years we have been able to extract water from ever expanding, generally deeper sources, but to what end?  Certainly we have “managed “ surface waters, by building dams, diversions and offstream reservoirs.  These supply half the potable water use in the United States and Canada as well as a lot of irrigation.  But groundwater has been an increasing component.  Fagan makes the point that deep groundwater sources are rarely sustainable for any period of time, and that many in the past have recognized this limitation.  But have we?

Maybe not so much.  A couple years ago I was at a conference out west.  The session I was speaking at involved sustainable groundwater, a major issue for AWWA, ASCE, NGWA and the utilities and agricultural folks around the world.  One of the speakers was a geologist with the State of Utah.  Her paper concerned the issues with decreasing groundwater levels in the St. George and Cedar City, areas in southwestern Utah, where population growth is a major issue.  Her point was that despite the State efforts, they had significant drawdowns across the area.  Keep in mind that the USGS (Reilly, et al, 2009) had identified southwestern Utah as one of many areas across the US where long term decreasing groundwater levels.  My paper was a similar issue for Florida, so I stopped partway into my paper and asked her a question:  has any hydrogeologist or engineer trying to permit water in the area ever said the water supply was not sustainable?”  The room got really quiet.  She looked at me and said, “well, no.”  In fact the audience chimed in that they had never heard this from their consultants either.  The discussion was informative and interesting.  Not sure I really finished my presentation because of the discussion.

To be fair, consultants are paid to solve problems, and for water supplies, this means finding groundwater and surface water limited areas like Utah when their clients request it.  So you don’t expect to pay your consultant to find “no water.”  But where does that lead us?  The concept of sustainable yield from confined aquifer systems is based on step drawdown tests.  Ignoring the details, what this constitutes is a series of short term tests of the amount of drawdown that occurs at different pumping levels. AWWA’s manual on Groundwater can give you the details, but the results are short-term and modeling long-term results requires a series of assumptions based on the step drawdown test.  This is that had been submitted in support of permits in Utah (and many other places).  As discussed in the conference session, clearly there is something wrong with this method of modeling and calculation because, well, the results did not match the reality.  The drawdowns increased despite modeling and step drawdown tests showing the demands were sustainable.  Clearly wrong.  Competing interests, the need to cast a wider net, and many other issues are often not considered.  The results play out throughout the world.  Confined aquifers are often not sustainable, a potential problem for much of agriculture in the farm belt of the US.  Are we headed the same direction as ancient people?

The good news is that these same hydrogeologists and engineers have the ability to help solve the sustainability problem.  We need a new definition for “safe yield.”  We need a better means to estimate leakance in aquifers.  A project I did with injection wells indicated that leakance was overestimated by a factor of 1000 to 10,000, which would drastically alter the results of any model.  More work needs to be undertaken here.  The overdraw of confined groundwater is a potential long-term catastrophe waiting to happen.  And the consequences are significant.  The question is can we adapt?

But when we start to look at resource limitations, who stands up and says, this type of withdrawal is not the right answer.  We need another one.  Where is that leadership moment?

Leadership Part 4

December 29, 2012
communciations, infrastructure, Leadership, management, Marketing water, sustainability, water sewer management
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In the theme of the past posts, I have two stories about a young man in North Carolina 30 years ago.  He was an engineer by education, but wanted to get into management.  So he got a master‘s degree in public administration and after working for a utility for several years, got an opportunity to manage one of the many very small towns in North Carolina.  Now he, like me, was not from North Carolina, but from a northern state, so imaging the reception 30 years ago in a small eastern North Carolina.  His workforce was not educated, and the town workforce lacked any specific skills according to the mayor, although the field supervisor was a skilled equipment operator and had completed high school.  Now you can imagine the suspicion this “young whipper-snapper” had on a community that did not want all that education and did not “want to become Raleigh,” as if there was some horrible stigma attached to that fine city.  And his assignment – fix the infrastructure.

Now many utility directors reading this post will relate to this issue.  It seems that the town was losing half the water pumped out of the groundwater in the leaking pipelines and over half the water mains were 30+ year old galvanized pipes that were laid near and far to reach specific properties.  All were 2 inches and smaller which obviously did not provide fire protection.  Areas of the town were skipped.  Sewer was lacking in some areas and there were a series of stormwater issues to address.  Of course there was no money as the town’s fiscal condition was poor, so the solution was to train the crew to lay the piping needed.  So the story goes like this.  The crew had never installed push-on PVC piping and did not believe it would stay together under pressure.  They had never installed valves or other appurtenances, not manholes and pipe on grade.  Cement finishing was an issue.  So the day came to start work.

The supervisor dug the trench with a backhoe and the young man joined the crew in the field.  He was trying to instruct them on the specifics of laying pipe from the surface.  After all he was the town manager.  It was a struggle, and conditions in a trench are not the best as working space is limited.  Finally realizing the need to show the crew how the pipe pushed together and sequence of tightening bolts needed to go, he hopped into the trench.  He worked with them for days, and the crew became very effective at installing pipe in all circumstances.  Even after the young man moved to a larger town, the crews finished the pipe replacement effort.  The leadership moment?  As the supervisor noted later, the instant he hopped in the trench.  The struggle wasn’t so much not understanding as not believing.  When the young man showed the crew that what he was telling them worked, that by jumping in the trench and working with them he appreciated and understood their efforts, when he treated them with respect in demonstrating the skills the crew needed, they bought the vision.  It was easy after that and they we successful.  Lesson 1:  Show the crew what you want, and believe in them and they will be successful

The same young man later demonstrated his willingness to protect the crew from interference form outside.  So this story goes that they were installing a water main of a given street.  The mayor called and demand a water break get fixed.  Coincidently it was 20 feet from where they were working.  The town manager said no, they would continue working.  You can imagine the broohah brewing up here.  Especially when two days later another leak occurred, but the new main was nearly complete.  And the fourth day, a third leak.  Conferences with commissioners, phone calls, etc form the fanned flames.  But the crew kept working.  No demands were conveyed to them.  Keep working.  The water main was complete the following Monday, placed into service and all service connected to the new line by 5 pm.  The manager was asked to explain his decision at the Tuesday Commission meeting.  He brought in a four foot piece of service line from where the first leak occurred. It contained 22 clamps, meaning the town personnel had “fixed” the line 22 time, over 80 hours of work, in the past.  The leak actually occurred between two to the clamps and could not have been fixed.  Replacement was the only option.  Leadership moment number 2:  the crew knew they had been shielded from criticism, since the manager took all of it.  All the commissioners decided that in the future, such issues would be left to the purview of the manager.  Not that during the week of construction his life wasn’t miserable.  Lesson 2.  Sometimes leadership is difficult.

Happy Holidays!

December 25, 2012
infrastructure, Leadership, management, sustainability, water sewer management
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Just a short note to wish everyone a very happy holiday season!.  May your wishes and dreams come true.  May you and your’s be happy.  May 2013 be our greatest year yet!.  May we be successful in all we try to do this year!  And remember that we are defined and remembered by our friends and family.   Enjoy the all-to-short time you have together!  Be merry!  The other stuff will wait.

Leadership Part 3 Examples?

December 24, 2012
Climate, Environment, finance, funding, infrastructure, Leadership, management, Marketing water, planning, sustainability, Uncategorized, water sewer management, water supplies
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Leadership Part 3

One of the themes in the prior two posts on leadership was that leaders are defined by a vision, the people who follow the leader and the ability to market the vision.  We often fail on the marketing end, especially in dealing with water and sewer infrastructure issues.  We know the infrastructure is in poor condition and that billions, perhaps trillions are needed to upgrade the system to serve our needs.  But pipes are hidden and parks are far more glamorous, so guess what gets funded?  At least until a failure occurs.

I teach an elected officials class for water/wastewater issues.  The all acknowledge that a failure o f the utility system is a huge issue and the electorate and elected officials are often looking for “the cause” or someone who is responsible.  In other words, someone to fire.  It is every utility director’s nightmare, and a nightmare for many elected officials as well.  Yet a 4 hour outage in a year is a 99.96% success rate.  My students would be raising hell with the dean and president if I failed them for only 99.96% correct answers.  And rightly so.  Why are utilities any different?  Public health sure, but the systems can fail, and the condition that many are in warrants far more attention to potential to fail unless we can market to the public the need to invest.  Yet how many city managers, elected officials and finance director acknowledge any accountability for failures?  The investigation into the Walkerton Ontario failure indicated that the employees who falsified records, the governing body, the water advisory body and other officials all the way to the province had culpability in the failure of the system that made half the town sick and killed a number of residents.  Utility folks need to market the need to protect public health better, to make the public understand.

Marketing is a difficult skill set.  I can tell you sales in not one of my skills.  Common among engineers who tend to be more technical in nature, letting the data guide us.  Even so, we have successes.  Think about the City of Los Angeles.  The only reason large numbers of people can live in LA is the aqueducts that were started back in 1900s by William Mulholland under the guidance of Mayor Fred Eaton.  The vision was to grow LA but the limitation was water supplies.  The aqueducts sparked water wars (think Chinatown, the movie), and developed through the 1930s.  Hetch Hetchy, over 100 miles east, was established as San Francisco’s water supply back in 1913 as well.  The reservoir system continues to supply San Francisco today.  Denver Water acquired and/or constructed reservoirs and tunnels to the west side of the Rockies for water supplies prior to 1940, realizing that sustained growth in the Denver area was not available east of the Rockies. .  Pinellas County and Orange County California started projects to reuse treated wastewater for irrigation of private yards, and aquifer recharge in the 1970s to sustain their supplies.  Sustainability of water supplies, management of water sources including wastewater and stormwater as a part of an integrated program and sustaining the financial and infrastructure condition of the utility are the long-term priorities.  We need to find those visionary projects and people today.

So here’s the assignment.  Let’s find where those leaders are today, and identify what makes them a leader.

Leadership Part 2

December 20, 2012
Climate, communciations, Environment, finance, funding, infrastructure, Leadership, management, Marketing water, planning, sea level rise, stormwater, sustainability, Uncategorized, water sewer management, water supplies
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Among the many things I do is work with college seniors as they get ready to graduate and hit the job market.  The changes you use in many of these students over that last year in school is often significant, and in some cases remarkable.  Different students grow differently and the potential starts to appear.  Some gain confidence in their skills and begin to grow into the profession.  Some of these students are likely to make good leaders in the field in the future.  But trying to guess which ones and why it is often a challenge.  However I want them all to have some concept of what leadership is all about.  For many of them, they will end up in the water/wastewater/stormwater field.  They are going to have to deal with tough issues like rebuilding deteriorating infrastructure, sea level rise, climate changes, stressed water supplies, energy demands and a more demanding electorate.  They will recommend increasing water and wastewater fees.  But will they have the skills to encourage decision-makers to move forward with the needs of the system.  You see, that’s where leadership comes into play.  Often it is little things that set things into motion.  Our engineers go into the world with a technical skills et, that ability to learn to solve problems with solutions.  We try to encourage them to be creative.  An assigned reading is “The Cult of the Mouse” by Henry Caroselli, who urges creativity above profits in the workplace.  Mr. Caroselli is right in that it is creativity that allows us to come up with innovative solutions, the ones that change how we live.  It is also where the patents and economic opportunities exist.  America rose to greatness in the 20th century in large part because of automobiles – we figured that out and it made some many things possible.  Computers became common place in the latter part of the century.  We use the technology for both in the water/wastewater/stormwater industry.  In fact they have made us so much more efficient that costs have not climbed as fast as they might have, which is why cable tv is normally more expensive than your water bill.  Which one do you need to live?  My hope is that today’s students figure out energy solutions that will carry us forward as a world leader in the 21st century.  Those alternative energy options, greater efficiency of current technology.  Each will allow the utility industry to improve it’s efficiency further.  The City of Dania Beach built the world’s first LEED Gold water plant.  That took a little vision on the part of the utility director Dominic Orlando.  And a cooperative team of consultants and students.  When we give these projects to young people we can be surprised because they often don’t know that “that’s not the way we do it.”  Well that’s exactly what Mr. Caroselli said.

So we look for leadership.  Creativity, innovation and the “Can-do” mentality are part of leadership, but not all.  There is that ability to set a vision, like Mr. Orlando did in Dania.  There is the ability to convince decision-makers of the wisdom of an idea, as opposed to doing like we always did to make the shareholder happy as Mr. Caroselli noted.   Selling innovation is often the hard part because that’s were the costs are.  But there is more.  Often the selling of a good idea is difficult.  You can be ridicules by the status quo.  Many ideas are just lost in the shuffle because they never receive a voice.

Leadership is often not understood at the time it is occurring.  Ok, maybe we figured this out when Lincoln was President, but if you read accounts of his Presidency, the early years are marked with indecision and backtracking before he got it right.  Most of that is forgotten in lieu of the ultimate results.  Many of the issues we face today need real leadership to create a long-term solution.  The “fiscal cliff” issue is a prime example, as it the long-term need for solutions for social security, Medicare and medical costs in general.  The need to fix the infrastructure that made our economy strong should be among those priorities also.  Remember, we don’t remember the councilman, mayor, legislator. manager, director or President who did not raise taxes or water bills.  They do remember those who solved problems

Defining Leadership Part 1

December 17, 2012
communciations, infrastructure, Leadership, management, sustainability, Uncategorized, water sewer management
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What exactly is leadership?  How is defined?  How do we find leaders?  What are the skills required to be a leader?  These are tough questions, and the answers are often and murky as the Colorado or Mississippi Rivers in springtime.  If picking leaders was easy, all organizations would be successful.  But they are not.  If leadership skills were easily defined, there would be a lot more schools trying to teach leadership , and they would create generations of leaders.  But they don’t.  It is so much easier to see leadership after the fact, not beforehand, and that is the challenge.  This about our elected officials.  Let’s start with the President and Congress.  We elect these people to lead us.  Periodically we pick one who leads us, often no so much.  No offense intended here, but can we really say that Herbert Hoover, Millard Fillmore, Andrew Johnson, Franklin Pierce, James Buchanan, or Warren Harding were great leaders/  They rank in US News’s worst 10 presidents of all time.  And our perception is generally the same (assuming you know enough US history to know these characters).   Was it their fault?  Hard to tell.  Circumstances were not in their favor, but what did they do to lead the nation from the difficulties?

Ulysses Grant and Zachary Taylor were great leaders on the battlefield, but they were failures as President.  Why? Different skill sets.  Their best skills were not transferrable to the Presidency.  Interestingly, Lincoln’s forays into combat in 1841, were utterly unsuccessful, he was demoted from Captain to private.  HE took this failure as an opportunity to learn and study, and then find talent to implement the plan (although it could be argued he dallied far to long with various generals in the Army of the Potomac, before promoting Grant). But we see Lincoln very differently than those noted above in part because they were able to lead us through difficult times.  History treats FDR, Teddy Roosevelt and Kennedy similarly.  But how did we pick these leaders in those times?  And how to we find ones for today?

Defining leadership appears o be better defined by identifying what is not leadership.  Scott Adams’ Dilbert comic strip has a book entities “Don’t step in the Leadership.”  The entire comic is focused on the silliness of managers trying to “lead” their charges.  Apparently Mr. Adams has many years worth of stories to tell.  Our reality is similar to Dilbert’s:  we see many examples of people who are not leaders.  Leadership and being the utility director, CEO, mayor, commissioner or any position “in charge” of an organization are often not related.  That is why if you ask, you can find out from the employees who are the “go to” people, the ones they rely on and follow.  Those are the true leaders.  They often outlast the leadership, especially is the positional leadership does not tap into their skill set.

People often desire to be the boss and to lead the organization but many never actually lead just like failed Presidents.  Some may think they are in charge, but if you lead no one, you are not a leader regardless of your title.  A leader is defined by those who follow him/her.  Leaders require no coercion to get people to follow through on their vision.  But a vision is needed.  It may not be a popular vision, and it may not be easy, but your followers must buy into it and be active in pursuing it.  One problem with today’s version of leadership in politics is the fear of tough decisions, or making part of the electorate unhappy.  CEOS often follow the corporate need to make money every quarter, at the expense of the long-term.  How many companies have failed to keep up with technology, upgrade facilities (at a cost), or alter their products to maintain market share?  It took years for the Big Three automakers to figure out that people did not want gas guzzling cars as gas prices increased, at the cost of market share, growth and profits.  The examples are endless.

So what to we look for with potential leaders?  That’s the question.  We want a vision.  We want skills and knowledge about that vision.  We want competency.  People skills.  The ability to take responsibility for the failures, and to share in success with those that supported the effort.  To bring value to the organization.  So next post let’s look at some examples.  In the meantime, post some thoughts on what you think leaders should look like.

Hope you all had a great thanksgiving

November 25, 2012
communciations, infrastructure, Leadership, sanitary sewer, sustainability, water sewer management, water supplies
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While many of us enjoyed being with friends and family, enjoying good food and drink,, how many of us thought about being connected to water and sewer systems that provide safe water supplies and safe wastewater disposal? We should be thankful for this as well. The other option makes life so much harder. We should not water and wastewater for granted, but unfortunately we do.

Creating Expectations

November 7, 2012
communciations, finance, funding, infrastructure, Leadership, management, Marketing water, planning, sustainability, water sewer management, water supplies
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We hear the moniker about getting the most out of your employees and staff.  Business books will talk about accountability, as will politicians, but creating accountability requires a first step on the art of management.  In any organization there needs to be a vision of where the organization wants to be in 5, 10 or 20 years.  Then there needs to be  a team of managers who buy into the vision, and implement it by securing employees who can implement it.  But it does not stop there.  You need to set  expectations.  Sounds, easy, but it is one of the issues professional employees especially complain about.  Assigning work tasks and saying “get it done” is not an expectation.  That’s a command.  Commands work in the military, but not so much in private practice.  The command and control types are notoriously difficult to work with, especially in professional and/or creative environments.  Micro-managers fall into this same mode.  The creative/professionals are intelligent and are looking for freedom to solve problems, usually more effectively that they can be told.  Instead, what needs to be done is to create a set of expectations of what will be accomplished and timelines.  Let the creative types and professionals figure out how. Provide them with the resources they need.  If employees understand the expectations, and are given the ability to accomplish the goals, accomplishing them becomes an end in itself – that becomes the goal and their satisfaction.  But does it work?  Well, yes.  I have been in organizations where the stars aligned to have a small group of manager who created and bought into a vision. We set expectations and let people accomplish them.  Always faster, always less cost, and always effectively.  A degree of recognition follows them. The group was easy to spot because they were accomplishing things (I should note that this does come with the price of jealousy among those who prefer to sit on the sidelines and can create some degree of subterfuge there which requires a strong leader to deal with that problem).  Students work the same way – set expectations of the delivery and allow them to develop the methods to solve the problem.  It is easy to see who the good engineers are, and who perhaps will be less successful.

Even easier are city and county managers, general managers and the like.  New officials come into office and six month later they are complaining that the staff and manager don’t communicate with them.  First response is to give them more information, which compounds the problem.  Still not communicating.  Every manager has one of these stories. The problem is that the new folks never revised the expectations from the past.  As a result everyone operates on the last set of expectations, until new ones are established.  If that never happens, well, the conflict escalates.  Someone has to take the leadership role, which creates a quandary with governing boards like the ones utilities commonly deal with because these folks are generally not educated in the intricacies of the operation of the utility, and rarely have any management experience.  They simply do not understand how to set reasonable expectations, to identify what is important to them and what is not, how to delegate, etc.  Until a sitdown discussion of expectations of both manager and the board is developed, the potential for friction will exist.  Some managers are good at recognizing and making adaptation, but most governing bodies are not.  This is why it is important to develop education programs that will encourage the community, which often has better connections to the governing members than staff.  So as utilities, our infrastructure is vital to the long-term development of our communities and to the public health and productivity of our residents.  So how do we make governing bodies understand the need to invest in utility infrastructure when emergencies are not happening?  Realizing we are all busy, we need to keep in mind that outreach is a key to creating that coalition of leadership in the community to advance the utility agenda.  Again a leadership issue and the need to engage the community, something we all too often forget to do.

Cutting costs while keeping the stormwater out

November 3, 2012
finance, funding, groundwater, infiltration, inflow to sanitary sewer, infrastructure, management, sanitary sewer, stormwater, sustainability, water sewer management
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Storms highlight the need to reduce infiltration and inflow into the collection system so as not to overwhelm the piping system causing plant damage or sewage overflows into streets, so much of the focus has been on dealing with removal of infiltration and inflow through televising the sewer system and sealing or lining sections where leaks are noted.  However, many miles of videotape show virtually nothing, so significant money is spent to find “nothing.”  Part of this is because “infiltration” and “inflow” are not the same, and storm events do not highlight infiltration nearly as much inflow.

The manholes and clean-outs are required for access and removal of material that may build up in the piping system and for changes in direction of the pipe.  Manholes are traditionally pre-cast concrete or brick, with brick being the method of choice until the 1960s.  Brick manholes suffer from the same problems as vitrified clay sewer lines – the grout is not waterproof so the grout can leak significant amounts of groundwater.  The manhole cover may not seal perfectly, becoming another source of infiltration.  Pre-cast concrete manholes resolve part this problem, but concrete is not impervious either.  While elastomeric or bituminous seals are placed between successive manhole rings, the concrete is still exposed.  Many utilities will require the exterior of the manholes to have a coal-tar or epoxy covering the exterior which helps to keep water out.

Inflow results form a direct connection between the sewer system and the surface.  The removal or accidental breaking of a cleanout, unsealed manhole covers, laterals on private property, connected gutters or storm ponds, damaged chimneys from paving roads, or cracking of the pipe may be a significant source of inflow to the system.  All are potential sources of inflow which can be identified easily during storm events.  The peaking that correlates with the rainfall is inflow, not infiltration since infiltration is part of the base flow that creeps upward with time.  When operators see peaks, this is not indicative of infiltration which is groundwater.  Think inflow.   Inflow causes peaks in run time on lift station pumps, and create potential overflows at the plant.  The good news is that simple, low tech methods can be used to detect inflow, which should be the precursor to any infiltration investigation.

The following outlines a basic program for inflow detection and correction for any utility system.  The order is important, and pursuing all steps will resolve the majority of issues.  The first step is inspection of all sanitary sewer manholes for damage, leakage or other problems, which while seeming obvious, usually surprises.  The manhole inspection should include documentation of condition, GPS location, and some form of numbering if not currently available.  Most manholes have limited condition issues, but where the bench or walls are in poor conditions, that should be repaired with an impregnating resin.

Next is repair/sealing of chimneys in all manholes to reduce inflow from the street during flooding events.  The chimney includes the ring, cement extensions, lift rings, brick or cement used to raise the manhole ring.  Manhole covers are often disturbed during paving or as a result of traffic.  The crack between the ring and cover can leak a lot of water.  The intent of the chimney seal is to prevent inflow from the area beneath the rim of the manhole, but above the cone.

The next step is to put dishes into the manholes.  One might think that only manholes in low lying areas get water into them, but surprisingly every manhole dish that is properly installed has water in it.  Hence assume that all manholes leak water between the rim and cover.  Most collection system workers are familiar with dishes at the bottom of the manhole where they are of limited use.  This is because the dish deforms when filled with water or is knocked in when the cover is flipped.  The solution is a deeper dish with reinforcing ribs.  No ribs, don’t use it.  A gasket is required.

Once the manholes are sealed, smoke testing can identify obvious surface connections.  The normal notifications, inspection and documentation will identify broken or missing cleanout caps, surface breaks on public and private property, connection of gutters to the sewer system, and stormwater connections.  All should be documented via photograph, by associated address and public or private location. The public openings at cleanouts can be corrected immediately.  However, if the cleanout is broken, it may indicate mower or vehicle damage, that can occur again.  If missing, the resident may be using the cleanout to drain the yard.  In either case the collection system needs to be protected.  USSI (http://www.elastaseal.com/about_us.html), located in Venice, FL developed a solution, called the LDL plug to correct those commonly broken or commonly opened cleanouts to reduce inflow.

Notices should then be sent to property owners with documentation of the inflow connections to their property.  This is sometimes the most difficult part of the program due to political will, but it is necessary.  This finishes the inflow correction portion of the project, but one more step will help focus efforts for the second “i”.

The final step is a low flow investigation, which is intended to focus on the infiltration piece of the problem.  Such an event will take several days and must be planned to determine priority manhole to start with and sequencing.

Based on a projected plan and route:

  • Open the manholes
  • Inspecting them for flow
  • Determining if flow is significant.  If investigation of basin will end and new basin will be started.  If flow exists, open consecutive manholes upstream to determine where flow is derived from.  Generally a 2 inch wide bead of water is a limit of “significant” infiltration.

Documentation of all problems and corrections in a report to utility that identifies problem, location and recommended repair.  Identification of sewer system leaks, including those on private property (via location of smoke on private property).

The example in Dania Beach, FL was that the last step indicated that only 15% of the sewer system needed to be televised.  This saved the City almost $1.2 million.  Their total costs is under $1.4 million for all parts of the project, spread over several years and contracts.  Overall the hope is that the inflow and infiltration programs together will save $400,000/yr, a five year payback.  But the key is to insure you get the inflow as well as the infiltration… Otherwise storms will continue to overwhelm plants, creating public health concerns and ruining your reuse program.