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D
36

Poor Water Quality

Saint Louis, MO 63131

Saint Louis County · Population served: 1,235,698

Water Systems Serving This Area

🏔
SEBASTIAN LAKE UTILITY OPERATING COMPANY
Surface water · Pop. 298
PWSID: AR0000511
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CS HOLIDAY WATER COMPANY
Groundwater · Pop. 395
PWSID: AZ0402018
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CS SUNIZONA WATER COMPANY
Groundwater · Pop. 136
PWSID: AZ0402036
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CS WINCHESTER WATER COMPANY
Groundwater · Pop. 402
PWSID: AZ0402110
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CS MORMON LAKE WATER COMPANY
Groundwater · Pop. 353
PWSID: AZ0403014

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
10.0
15 ppb 1 ppb Warning
Copper
6000.0
1300 ppb 300 ppb Exceeded

PFAS / Forever Chemicals

1 detected All below limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFBA5.1 pptNo standard500 pptUnregulated

Violation History (Last 5 Years)

6438Total (5yr)
1544Health-Based
3140Major