The Village of Skokie began conducting lead and copper monitoring (sampling and testing) in 1992 when the Lead & Copper Rule was implemented by the Illinois Environmental Protection Agency (IEPA). In 2002, based on Skokie's satisfactory sampling results during the past sampling periods, the IEPA placed Skokie on a reduced monitoring requirement for lead and copper that requires testing every three years. Based on Skokie being a large water supply, a minimum of 30 samples are required to be taken during each established sampling period (every three years) under reduced monitoring approved by IEPA.
- During Skokie’s last sampling period in 2020, the 90th percentile results for lead was 3.46 parts per billion (ppb). No samples in 2020 exceeded the 15ppb IEPA Action Level.
- During Skokie’s sampling period in 2017, the 90th percentile results for lead was 5.15 ppb. No samples exceeded the 15ppb IEPA Action Level.
- During Skokie’s sampling period in 2014, the 90th percentile results for lead was below the laboratory Detection Limit. No samples exceeded the 15ppb IEPA Action Level.
See more information on water quality in Skokie, including the 2020 Water Quality Report.
See more Lead Water Line Information from the Village of Skokie.
- Water Service Line Survey
- Skokie Water Service Map
- Lead in Drinking Water Information