Walled Lake

Walled Lake purchases from the Great Lakes Water Authority (GLWA). The water comes from the Lake Huron watershed via the Lake Huron Water Treatment Plant in Port Huron.

GLWA’s water treatment process is a 24/7 operation managed by highly-qualified and trained professionals. Once water enters GLWA facilities it goes through various treatment levels, including physical screening, filtration and a final quality check before being pumped out of the stations into the distribution system.

There is no lead or copper in the source water and no known lead service lines in the Walled Lake water system. View the lead and copper results for Walled Lake.

Lead and copper contamination comes from leaching of plumbing materials. Corrosion control chemicals (phosphate) are added to the water at the treatment plant to minimize leaching into drinking water. Things you can do to minimize consuming water containing leached plumbing material are as follows:

• Use cold water for drinking and cooking
• Flush your faucet if not used for more than 6 hours
• Clean out your faucet aerators on a regular basis
• Consider replacing your faucet if older than 2014. Faucets newer than 2014 are considered lead free (less than 0.25% lead allowed).

The State's Lead and Copper Rule requires that water operators create a plumbing material inventory. If you know what your in-home plumbing material is, please call 248-452-9158 or email wrcwater@oaklandcountymi.gov.

More information about lead can be found at michigan.gov/mileadsafe.

The water pressure delivered to your home depends on the location of your home within the water system's elevation.

Please call 248-452-9158 or email wrcwater@oaklandcountymi.gov for more information.

Discolored water occurs when normally settled sediment on the bottom of the watermain gets stirred up. This can happen when sprinklers are turned on in the spring or when a fire hydrant is used. Water maintenance staff flush and sample hydrants after main breaks, which can also cause discolored water. This water is not a health risk, but we do understand it is unpleasant.

The best thing you can do is to refrain from using the water inside your home until the system settles down again. Typically, the water will settle after about two hours. To prevent the discolored water from flowing through your entire system:

• Run cold water at an outside hose bib or at a faucet near your water meter until it clears.
• Then flush the faucets inside your home from the one closest to your meter and out.

To manage outdoor water usage and reduce water costs, water every other day.

• Even-numbered days for properties with even-numbered addresses
• Odd-numbered days for properties with odd-numbered addresses. 

• There are no known lead service lines in the Walled Lake water supply system (WSSN 6875).
• WRC has operated the Walled Lake water system since 2019. Oakland County was involved in water system construction in 1967.
• Residential water service lines are typically one inch or smaller. Oakland County has used copper as the service line material since 1957 for water service lines with a diameter of two inches or less.
• High density polyethylene (HDPE) was allowed as a service line material starting in 2019.
• Lead was banned as a water service line material in Michigan in 1988.
• Please visit oaklandcountymi.gov/watermap to view the best available information about your water service line material.