The source is groundwater found in glacial materials. Two wells provide the pumping capacity for this well water supplied system. Ortho-polyphosphate is added at the wellhouse for corrosion control and chlorine is added as a disinfectant.

There is no lead or copper in the source water and no known lead service lines in the water system. There was some lead in the solder used to connect copper piping prior to 1988. View the lead and copper results for the Knorrwood Knolls water system.

Lead and copper contamination comes from leaching of plumbing materials. 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) 858-0958 or email WRCwater@oakgov.com.

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

Your water pressure is dependent on your elevation.

Please call 248-858-0958 or email WRCwater@oakgov.com for more information.

Outdoor water use, primarily the sprinkling of lawns, significantly impacts water pressure and the sizing of water system infrastructure when the sprinkling is scheduled during peak demand times.

To improve your water pressure and decrease costs required for system expansion: water the lawn or set your automatic sprinklers to operate between the hours of 10 p.m. to 4:00 a.m. or  9:00 a.m. to 4:00 p.m.

Michigan State University recommends light, frequent irrigation applied in the early afternoon.

• There are no known lead service lines in the Knorrwood Knolls water supply system (WSSN 3666).
• WRC has operated the Knorrwood Knolls water system since its beginning in 1977 and the first water tap to the Knorrwood Knolls water system was made in 1979. 
• Residential water service lines are typically one inch or smaller. Oakland County standards required 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 2007.
• Lead was banned as a water service line material in Michigan in 1988.
• Please visit oakgov.com/watermap to view the best available information about your water service line material.