Kings Branch Wastewater Spill Update

At 7:20 a.m. on Friday, July 14, Charlotte Water received a call reporting a Sanitary Sewer Overflow (SSO) near 700 Farmhurst Drive. Charlotte Water crews responded to discover an active spill of wastewater discharging into Kings Branch, a tributary of Sugar Creek. The wastewater appeared to be escaping from a 21” sanitary sewer pipe that had separated at a joint. Between 9:00 a.m. and 2:30 p.m., crews worked to assess the pipe failure and gain access for heavy equipment. Access to this particular stretch of Kings Branch was hindered by a ¼ mile thick streamside zone of trees, vines, underbrush and dense bamboo.

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Dense bamboo vegetation along Kings Branch

In order to control wastewater spills, crews must set up pumps and hoses to collect the wastewater coming to the break area, bypass the break in the pipe and send the wastewater to a nearby manhole so that the wastewater can continue to flow to the treatment plant. Bypass pumps arrived at approximately 2:15 p.m. At 6:20 p.m. the bypass operation was completely set up and wastewater was no longer spilling into the creek.

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Bypass pumps and hoses redirecting wastewater into a nearby manhole

Spill Volume & Location
Charlotte Water estimates that approximately 201,850 gallons of wastewater entered Kings Branch. It was first reported that the total would be close to 180,000 gallons but revised the spill volume once the spill was contained. Spill volume is based on the duration of the spill, the diameter of the pipe and the fullness of the pipe. Kings Branch is located near Archdale Drive and South Boulevard. The creek flows from the break point about 3 miles before it meets with Sugar Creek just south of I-485. Sugar Creek flows from that point through South Carolina about 8 miles where it meets with the Catawba River.

Notification
Nearby residents were notified of the event through social media posts to NextDoor, door hangers and media notification. Downstream water supply operators and other stakeholders were notified of the spill via email. Union County (NC), Lancaster County (SC) Water and Sewer District, Lugoff-Elgin Water Authority, Duke Energy, Camden (SC) experienced no impacts to their water supply. The media reported that the SC Department of Health and Environmental Control issued No Swim Advisories at some Catawba River access points until sampling tests could confirm any impact.

Repair
Charlotte Water crews have monitored the bypass operation 24 hours a day to ensure no secondary spills occur. A contractor has been gathering the necessary materials and equipment to make the repair as well as improving site access. Repair construction is expected to begin Friday, July 21.

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Improving site access to begin repair

Will We Run Out of water?

The short answer is no, not if we continue on a sustainable path and practice conservation. But what does that actually mean? And how do we know we won’t run out.

Let’s first look into our water supply. Then we will learn how it is managed and what you can do to ensure water is around for years and years.

City of Charlotte/Mecklenburg County withdraws our drinking water from Mountain Island Lake and Lake Norman, both part of the Catawba River and the Catawba-Wateree River Basin. This river basin supports nearly 2 million people with water for drinking, power generation, industrial processes, crop and livestock production, recreation, irrigation and more. About 25% of Duke Energy’s electricity for the Carolina’s is made in the 13 hydro stations on the river basin.

CWRB

So where exactly is this water going, and who uses it?

where is water going

One of the most surprising things is that Catawba-Wateree River basin loses 204 million gallons/day from natural evaporation alone. You can imagine how much has evaporated during these hot summer months.

A 2006 Water Supply Study found maximum capacity of Catawba River Basin for water supply could be reached mid-century. Thus, a group was formed in 2007 to access and figure out a way to extend the life of our river basin.

This group that consists of Duke energy, who owns and operates the dams that manage the water and the 18 munincipalities is called the Catawba-Wateree Management Group. It is a non-profit corporation working to extend and enhance the capacity of the Catawba and Wateree Rivers to meet human needs while maintaining the ecological health of the waterway. This group was tasked with creating a Water Supply Master Plan.

The master plan identifies the current challenges associated with a limited water supply especially during periods of drought. It also identifies a series of recommendations that could extend the regional water supply capacity of the Catawba-Wateree River Basin into the next century.

Key recommendations of the plan include:

  • Increased water use efficiency
  • Lowering critical water intakes/elevations (via Duke Energy’s management of the dam system)
    • Power Plant
    • Public Water Supply
  • Raise target levels during the summer months
  • Enhance the Drought responsiveness through the Low Inflow Protocol (the protocol we use to determine what drought stage we are in and what amount of conservation is needed to ensure we have enough water for essential uses).

With implementation of the Catawba-Wateree Water Supply Master plan, we should extend the river’s capacity to sustain grown through 2100.

The good news is that total average water consumption for Charlotte Water customers is decreasing .totalaverage

This is most likely attributed to more efficient appliances, smart irrigation and behavior changes.  This along with good infrastructure, financial and business planning will ensure that we have enough water for all current and future Mecklenburg County residents.

For more informatoin about the Water Supply Master Plan visit the Catawba-Wateree Management Group website.

Smoke In The Water

Charlotte Water is smoking…it’s not what you think though. On occasion we conduct smoke testing to detect failures and leaks within the wastewater collection system (sewer pipes) that allow rainwater, creek water and other storm water run-off to enter the system.Smoke testing is a technique where smoke is blown into the sewer system, and the smoke escapes through leaks in the sewers.

We will always let you know ahead of time if we are conducting this type of testing in your ‘hood with a door hanger.

We instruct those that will have smoke testing occur in their neighborhood to ensure that all wastewater pipes have been filled with water recently and that all toilets are filled with water.

Some things to know about smoke testing:

  • Smoke should not enter your home or business unless you have defective plumbing or dry drain traps.  Running water will block smoke from entering your home at these locations.
  • Crews will not need to enter into your home or business.
  • You can expect to see smoke escape through vent stacks on the roof of your building – this is a sign that the building’s plumbing is properly installed.
  • The smoke is white to gray in color, nearly odorless, and is non-toxic and non-staining. The smoke will not leave residue or create a fire hazard.  The smoke IS NOT harmful to people or pets.

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So the next time you see one of our staff or contractors with a smoke machine, remember we aren’t sending smoke signals, just making sure that any leaks are identified and fixed ASAP.

 

Save Water While it Gets Hotter

It’s finally summer. So we thought of five more ways to conserve water this summer. Keep these in mind while you keep cool on these hot days.

  1. Chuck the melted ice from your lunch to-go cup in a desk plant or house plant. [Not the soda, the melted ice. A little bit of sweet tea will be okay]
  2. Temporarily move houseplants outside in the rain. Water from the sky is free!
  3. Do your dish washing and laundry during off-peak hours [and only when the dishwasher is full. Grab the doggie food bowls to fill up that last empty space!.
  4. Water your lawn slowly. It’s really difficult to get water to soak into soils in Charlotte. When you start to notice water running off the lawn or pooling, it’s time to stop the sprinkler and give the soil time to catch up.
  5. Plant more trees! And then more trees. Eventually you’ll have less lawn. Turfgrass is not native to Charlotte. Which means it needs water, usually more than provided by Mother Nature. Converting lawn to native trees and shrubs cuts back the need for outdoor watering substantially. And don’t forget the mulch!