Category Archives: Flow Free

Construction, Flow Free, General, My Water, Repairs and Spills, Wastewater, What's Going On?

How Does CLTWater Respond To A Wastewater Overflow?

There is a wastewater spill. What should I do?

Call 311 or 704-336-7600 and say or select ‘wastewater emergency’ to speak to a CLTWater dispatcher. We will respond 24 hours a day.

Photo showing a wastewater manhole in Freedom Park
Wastewater manholes are throughout our neighborhoods. If you see water overflowing, call 311 or 704-336-7600 and select wastewater emergency.

How can I help reduce overflows? 

  • Toss in the trash: paper towels, wipes, hair, cotton swabs, feminine products, dental floss, coffee grounds, and excess food. 
  • Toss in the toilet: only toilet paper. 
  • Drain in the sink: soap suds, small amounts of food from the plate, and liquids. 
  • Always call 811 before you dig.

Take to a full-service recycling center: used and expired oils and grease. 

What causes wastewater overflows?

  • Clogs of wipes, paper towels, leftover kitchen grease, oils, or anything other than toilet paper.
  • Pipe failure (tree falls and breaks pipe, stream/creek erosion causing the pipe to fall into the creek)
  • Tree roots attacking and clogging the pipe
  • Damage by nearby construction. 

How does CLTWater respond?

A rapid response crew will investigate the area and attempt to remove the clog. This work does not impact drinking water quality. Residents and their pets were encouraged to avoid contact with the creek during an overflow response.

How does CLTWater respond to a large overflow?

For example – a tree falls into the creek washing out the creek bank and undermining the wastewater pipe just behind the creek bank. Crews frequently inspect these areas, but erosion can occur quickly during heavy rain events. Crews will:

  • Create a temporary access road or path if necessary to respond.
  • Install a temporary wastewater pipe to bypass the broken pipe and stop the overflow. The pumps and temporary above-ground pipes are checked several times daily to prevent possible wastewater overflows.
  • Stabilize the creek bank.
  • Construct a barrier / temporary stream bank to protect workers.
  • Remove the broken pipe. 
  • Install the new pipe and test it.
  • Rebuild the stream bank with clean fill material (soil). 
  • Remove temporary pipes and pumps.
  • Remove large spoil piles of dirt.
  • Complete grading/drainage.
  • Plant trees/shrubs and seed/straw the area.
  • Restore the stream bank and revegetate.
  • If the greenway was closed during work, it would be restored and reopened. When greenways are affected, CLTWater works with Mecklenburg County on restoration.

How does CLTWater handle tropical storms or heavy rains and prevent spills?

The underground sanitary sewer pipe network is not designed to handle rain, yet the runoff and flooding from large rains inevitably infiltrate the wastewater pipe network. Overflow basins at the five largest wastewater treatment plants capture and later treat more than 160 million gallons of rainwater mixed with wastewater. These equalization basins (EQ basins) help prevent wastewater from overflowing out of manholes in our community.

CLTWater has also added several large wastewater pipes to help reduce the impact of heavy rains. Crews work to prevent rainwater from getting into the sanitary sewer system and are out investigating our system soon after a storm ends.

picture showing excavator beside a creek bank.
Crews create a temporary creek bank to stop the spill. Crews then install pumps to redirect the community’s wastewater around the broken pipe. Crews then add new pipe and rebuild the creek bank.
Flow Free, Wastewater

But it says "flushable."

So, you’ve run out of toilet paper and resorted to only using wipes. But it’s okay because you are using “flushable” wipes, right? Nope!

Unfortunately, the word “flushable” doesn’t mean what you think it means…

Flushable wipes do not break down

Toilet paper is specifically made to break down as it travels to the wastewater treatment plant and is the only paper product that should be flushed down the toilet. This means that your wastewater can Flow Free to your local wastewater treatment plant.

Here are some other items that are technically “flushable”:

Technically anything is flushable, but that doesn’t mean you are going to flush your ring or iPhone down the toilet. The same should be said for wipes.

All of the above items, including wipes, do not break down as they travel from your home to our wastewater treatment plant. They get caught up with roots, grease and other items that don’t belong in the sewer and cause blockages. The blockage may happen in your home which could cause sewage to back up into your home (blech) or the blockage can happen farther down the line and cause a sanitary sewer overflow in your neighborhood or stream.

This doesn’t even include the cost of blockages at lift stations. Clogs in pumps and valves lead to higher run times, increased power costs and increased maintenance trips. Crews also have to pull the pumps apart to clear the blockage, and on rare occasions, wipes can even damage the pumping equipment, causing even higher costs to ratepayers.

Overflows are more than inconvenient and nasty. They are also expensive.

Responding to and cleaning up an overflow costs the utility an average of $5,000!

The photo above shows actual wipes that got caught in our lift station and had to be removed by hand. Yuck!

The take home:

Toilet paper is specifically made to break down as it travels to the wastewater treatment plant and is the only paper product that should be flushed down the toilet. This means that your wastewater can Flow Free to your local wastewater treatment plant.

To learn more about how to protect your pipes, visit our website.

Flow Free, What's Going On?

Grease Free Gets a Face Lift

All utilities have an educational campaign to educate their customers about sanitary sewer overflows (read: wastewater spilling up over manholes into backyards, neighborhoods, creeks, and streams, GROSS). As terrible as these are, they are entirely avoidable if you avoid putting items down the drain that will cause clogs in the pipes. Continue reading Grease Free Gets a Face Lift →

Flow Free, My Water, Water Quality, What's Going On?

Grease in Pipes Continues to Cause Sewer Spills

The FY16 Wastewater report has been released. The report summarizes activities taken by the department to successfully collect and treat the community’s wastewater before recycling it to the environment. Wastewater treatment plants treated over 30 billion gallons of wastewater during FY16. Continue reading Grease in Pipes Continues to Cause Sewer Spills →