Category Archives: Water Quality

General, How Things Work, My Water, Wastewater, Water Quality

Plumbing Tips When Buying A House

Buying a house is exciting and a little scary. Before you pick the final one, check out below tips to reduce future costs and concerns…

Questions to ask the owner / realtor

  • Is the water service provided by Charlotte Water, a third party, or is the property on a private well?
    • Is wastewater service also provided by Charlotte Water?
  • If the house was built more than 50 years ago, has the plumbing been replaced? If it hasn’t, that could cost thousands of dollars to replace.
  • Are there any utility easements under the property?
  • Is there a pressure-reducing valve on the water service line?
  • Where is the water meter?
    • If the water meter is between the street and a sidewalk, and the private plumbing service line needs to be replaced, any damage to a sidewalk will be up to the property owner to pay.

Easements

CLTWater easements are not typically reported as part of a title search for title insurance when purchasing a property. Surveying the property is the best way to determine if there are any easements on it.​ Learn more at https://cltwaterblog.org/2023/03/easement-101/.

Low Water Pressure

If the property is at the top of a hill or on the highest part of the neighborhood, it is likely you will experience lower water pressure than others in the neighborhood. Learn more about other possible factors at charlottewater.org.

High Water Pressure

If the property is located beside a creek, at the bottom of a hill, or in the lowest part of the neighborhood, it may have higher water pressure than other properties in the neighborhood. Learn more about other possible factors at charlottewater.org.

Pressure Reducing Valve (PRV)

If the house is located in a geographically low area (near a creek) or near a water pumping facility, the water pressure may exceed 80 psi. Learn more at charlottewater.org.

Irrigation and Backflow Prevention Device Testing

If the house has an irrigation system, it probably also has a backflow prevention device that requires testing. 

Wastewater Cleanout

Most homes also have a white plastic lid, commonly referred to as a cleanout. This provides access to the wastewater pipe between your house and the public wastewater system, allowing you to inspect and clear blockages. Many houses do not have a cleanout and may be worth considering, especially if you have trees in the front yard.

Backwater Valve

A plumbing fixture called a backwater valve can prevent sewage backups. The North Carolina State Plumbing Code has required backwater valves in some homes since the early 1930s. If your plumbing fixtures are located below the top of the first upstream manhole, state regulations require the installation of a backwater valve. To determine if your property has a backwater valve or needs one, please consult a professional plumber or contractor. Learn more about other possible wastewater issues at charlottewater.org.


Waterfront Properties and Homes Lower Than The Public Street

If your future home is on waterfront property or the public road is higher than your house, the house may have a low-pressure sanitary sewer system to pump your wastewater up to the gravity-fed sewer system. Make sure you understand how old the pump is and if there have been any issues with the system. If you choose to purchase the home, consider having a plumber inspect it occasionally.

Read Inspector Notes

Consider getting a home inspector to investigate the house. When reviewing the inspector’s notes, pay close attention to any remarks related to the plumbing system. The inspector may provide details about the pipe type and age, potential water or wastewater issues, and the presence of easements affecting the property. Do any of the noted issues need immediate repair?

When reading the home inspection report, you may see information about water flow in gallons per minute (gpm) or water pressure in pounds per square inch (psi). The minimum expected levels at the water meter are

  • Flow is equal to or greater than 8 gpm
  • Pressure is equal to or greater than 20 psi
  • If the house numbers are lower than these, please consult with the inspector on readings. Backflow prevention devices, pressure-reducing valves, whole-house filtration systems, and other attachments to the plumbing system may restrict flow or pressure inside a home.

Set Up Your Account Days Before Moving In

Don’t forget…before moving in, call us to set up your account several days in advance. Learn more at https://www.charlottenc.gov/water/Customer-Care/Start-Stop-Service

Other Resources

My Charlotte Lookup to learn about property, district, and trash/recycling details.

Photobook of Water and Wastewater Construction to learn more about what water and wastewater structures may be in a yard and how to determine the type of plumbing you have.

Cautionary Tale: Replace Old Water Service Line Before It Becomes an Emergency.

General, Water Quality

Bad Drinking Water Tastes and Odors May Be Coming from Your Own Front Yard

It may seem surprising, but what you do in your front yard can affect the taste and odor of your drinking water.

How? 

Your private plumbing system begins at the end of the meter box. The plumbing in your front yard may be made of PVC, PEX, or other pipe materials that can allow some outside chemical contaminants, such as pesticides and fuels, to seep through their joints. 

Why should I care? 

Damaging your service line can be costly, often requiring thousands of dollars for replacement. Read the stories below to learn more from real-life events.

Real-Life Examples

– A customer parked their car over the grass between the meter box and their house. The car’s oil leak seeped into the service pipe. 

– A customer attempted to eliminate an underground wasp nest by pouring gasoline into the hole. The gas flowed beside the private service line, causing odor and taste issues, and had to be replaced. 

– A customer reported a chemical odor and taste that was traced to a painter washing a brush with turpentine and pouring the turpentine on the ground over the water line.

– A customer reported a plastic odor and taste, which was traced a garden hose filled with water in the heating up from the sun and creating a bad taste. 

– A customer reported a chemical soapy odor and taste that was traced to a plant fertilizer bottle attached to the hose.  A low-pressure event can cause water to be back-siphoned into the house if there is no backflow prevention device.

Tips 

  • Call NC811 before you dig.
    • Most service lines run straight from the meter box to the home. Is anything leaking above the service line, like a car?
    • Was anything sprayed or poured on the front yard between the water meter and the home?
  • Run cold water for 10 minutes to see if the problem continues. 
  • Check all faucets to see if the issue is isolated to one faucet or affects the entire house. 
  • Talk to your neighbors to see if they are experiencing similar issues. 
  • If you notice any unusual odor or taste, call 311 immediately and say or select water quality emergency.
  • Drain odors can often be mistaken for tap water odors.  Pour a glass of water and move away from the sink drain.  Smell the glass of water; if no odor, check the drain and perform cleaning. 
  • Aging water heaters can cause odors.  If your cold water has no odor but the hot water does, perform maintenance on your water heater as per the manufacturer’s recommendations.

Behind the Scenes, Distance Learning, General, How Things Work, News, Water Quality

Say Goodbye to Slimy Mats: Lyngbya Treatment Underway at Lake Norman, Mountain Island & Lake Wylie

Lyngbya Treatment on Mountain Island Lake.

If you’ve spent any time around Lake Norman, Mountain Island Lake, or Lake Wylie in recent summers, you might’ve noticed thick, dark, musty-smelling mats floating near the shore. That fuzzy stuff? It’s not harmless lake gunk—it’s a type of algae called Lyngbya, and it’s been quietly spreading across southern reservoirs, turning once-clear waters into mucky messes.

But there’s good news on the horizon.

Starting this month and continuing through September, a coordinated effort is underway to treat Lyngbya in all three lakes. This initiative is led by the Catawba-Wateree Water Management Group, with help from county governments, marine commissions, North Carolina State University, and Duke Energy. The result? A much more streamlined and effective plan to tackle this invasive algae head-on.

What Exactly Is Lyngbya?

Lyngbya (recently reclassified as Microseria wollei) is a type of cyanobacteria—often called blue-green algae—that thrives in warm, nutrient-rich water. Unlike some seasonal algae, Lyngbya doesn’t go away when summer ends. It lives year-round on the lake bottom, then floats to the surface as water temperatures rise, forming dense mats that can clog boat motors, reduce water quality, and frankly, make lakes less enjoyable for everyone.

To give you a sense of how aggressive it can be: in 2024, Lake Gaston on the NC/VA border reported over 1,000 acres of Lyngbya infestation.

What’s Being Done?

For the 2025 season, treatment will cover 60 acres total across the three lakes:

  • 25 acres in Lake Norman
  • 25 acres in Mountain Island Lake
  • 10 acres in Lake Wylie

Monthly treatments will be handled by Aqua Services, Inc., using EPA-approved copper-based algaecides distributed by SePRO Corporation. If you live near the water, expect to see airboats cruising the shoreline mid-month, releasing a bright blue liquid into the water. That’s the algaecide at work—it may look dramatic, but it’s safe for fishing, swimming, and watering your plants.

Will It Work?

The short answer: yes, but it will take time.

Because Lyngbya is tough to kill and can look alive even when it’s not, results won’t be obvious overnight. You might see fewer surface mats this summer, but the real payoff will come after several treatment seasons. This approach mirrors the successful program at Lake Gaston, which is already seeing noticeable reductions in Lyngbya after multiple years of consistent treatment.

What Can You Do?

If you’re a lakefront property owner or just someone who loves spending weekends on the water, stay informed! You can report problem areas or learn more about aquatic vegetation management by emailing AquaticPlants@duke-energy.com or visiting duke-energy.com/AquaticPlants.

Bottom line: Lyngbya might be stubborn, but so are we. With consistent treatment and community awareness, our lakes can stay clean, healthy, and a joy to explore for years to come.

Got questions or curious about what you’re seeing in the water? Drop them in the comments—we’ll help you make sense of the science.

Additional Information:

2024 update about Lyngbya.

Microplastics Reduction Research at Charlotte Water.

General, Wastewater, Water Quality

Unlocking a New Level of Progress with a Plant: Nuvoda Pilot

Are small plant pieces key to a new level of greatness in the Queen City’s wastewater treatment process? Charlotte Water’s Sugar Creek Water Resource Recovery Facility (WRRF) has set out on a 12-month mission to learn.

Kenaf sample in an Imhoff Cone, the tool used to check how much kenaf is currently in Sugar Creek WRRF’s basins.

Nuvoda, a wastewater solutions company in Raleigh, NC, created the Mobile Organic Biofilm (MOB™) Process. The star of the show called kenaf is a fast-growing plant that can get rid of up to 10 tons of carbon dioxide per acre while growing. That’s eight times as much as evergreen trees! 

So, how does it work? Small pieces of kenaf are in all stages of Sugar Creek’s secondary treatment process. Its job is to help make space for helpful biofilms to grow.

Biofilms, a slime-like layer found in nature, grow on surfaces to eat the “waste” in wastewater and help solids settle faster.  This leads to treated water that can be safely returned to the environment.

The kenaf material is also reusable! A giant sift-like tool separates kenaf from the water. Screens inside of the filter are small enough to catch and make sure no kenaf is wasted or left to come out in your kitchen sink. Sugar Creek’s maintenance team even added some helpful features, like a ramp for it to fall out of the sift, into the bin below.

Muriel Steele, Water Process Engineer, guiding kenaf down a custom-made ramp through the final stages of the MOB cycle.

MOB and kenaf have other perks, too.

Chemicals like ammonia have to be controlled carefully while treating wastewater. The microorganisms needed to treat ammonia can be hard to grow in cold temperatures, but biofilms can provide a cozy space for these specialists to grow. Kenaf boosts the amount of space for the biofilms.

Treatment facilities need to run as smoothly as possible during storms. Improved settling thanks to the kenaf can help with higher water flows during rainy days. So, as the extra water comes into the plant from bad weather, solids settle faster and there is a lower chance of anything unwanted continuing to the next treatment stage.

Kenaf is grown in Cameron, NC, and Charlotte Water is working to include these fields in our biosolids program. Biosolids are a nutrient-rich material made from treated wastewater, used to help plant growth and keep a healthy environment.

The Nuvoda MOB pilot is a chance for Charlotte Water to improve for the future by lowering costs and getting ready for the city to grow. By exploring this new process, Sugar Creek WRRF is gathering useful data to help make decisions for improvements. All thanks to a plant! 

To learn more about MOB and kenaf, visit Nuvoda’s website.

Video | Nuvoda: The MOB™ Process

Video | Nuvoda: Natural Ballasted Media for the MOB™ Process