Water QualityThe City of St. Charles distributes a water quality report as part of our continued effort to provide our customers with educational information regarding St. Charles’ drinking water supply. This report demonstrates that our water supply is safe by meeting and/or exceeding all water quality standards as listed in the Safe Drinking Water Act. The United States Environmental Protection Agency and the Illinois Environmental Protection Agency continually monitor all drinking water utilities to ensure compliance with the SDWA. The report is distributed annually to all water customers, as required by the SDWA. Water Quality Reports
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