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WaterSafety

St Louis City Pws

St Louis, Missouri · PWSID: MO6010715

B
Water Safety Score
80/100
304,709
Population Served
Surface water
Source Type
0
Health Violations
0
Contaminant Exceedances

Detected Contaminants

ContaminantDetected LevelMCL (Limit)StatusSample Date
Benzene2.5 ppb5 ppbWithin LimitOct 1, 2022

Violation History

Contaminant 2037
Health-BasedOct 1, 2022 - Dec 31, 2022
Open
Enforcement: 213
Contaminant 2037
Health-BasedOct 1, 2022 - May 20, 2024
Resolved
Enforcement: 214
Contaminant 2037
Health-BasedOct 1, 2022 - Dec 31, 2022
Open
Enforcement: 213
Contaminant 2045
Health-BasedOct 1, 2022 - Dec 31, 2022
Open
Enforcement: 213
Contaminant 2045
Health-BasedOct 1, 2022 - May 20, 2024
Resolved
Enforcement: 214
Contaminant 2045
Health-BasedOct 1, 2022 - Dec 31, 2022
Open
Enforcement: 213
Benzene
Health-BasedOct 1, 2022 - Dec 31, 2022
Open
Enforcement: 213
Benzene
Health-BasedOct 1, 2022 - May 20, 2024
Resolved
Enforcement: 214
Benzene
Health-BasedOct 1, 2022 - Dec 31, 2022
Open
Enforcement: 213
Contaminant 2051
Health-BasedOct 1, 2022 - Dec 31, 2022
Open
Enforcement: 213

Frequently Asked Questions

St Louis City Pws has a Water Safety Score of B (80/100). The system serves 304,709 people and has 0 health violations on record. Check the contaminant table above for specific detected substances.

St Louis City Pws has 0 contaminant exceedances above EPA health guidelines. See the full contaminant detection table above for all tested substances and their levels relative to legal limits and health guidelines.

The Water Safety Score (0-100, grades A through F) is based on contaminant levels relative to legal limits, health guideline exceedances, violation history, and enforcement actions. Higher scores indicate fewer concerns.

If your water system has violations, request the Consumer Confidence Report from your utility, consider getting an independent water test from a certified lab, and look into certified water filters for specific contaminants of concern. For lead, run cold water for 30 seconds before drinking.

Sources: EPA SDWIS, EWG Tap Water Database
Last updated:

Water quality data sourced from EPA's Safe Drinking Water Information System (SDWIS). Safety scores are calculated based on contaminant levels, violations, and enforcement history. This is not a substitute for your utility's official Consumer Confidence Report.