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D
39

Poor Water Quality

Farmington, MO 63640

Saint Francois County · Population served: 34,459

Water Systems Serving This Area

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THOMAS HILL PWSD 1
Surface water · Pop. 10,880
PWSID: MO2024504
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FARMINGTON PWS
Groundwater · Pop. 18,217
PWSID: MO4010270
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PILOT KNOB RURAL WD 1 N & S
Groundwater · Pop. 839
PWSID: MO4020601
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PILOT KNOB RURAL WD 1 DOE RUN AREA
Groundwater · Pop. 507
PWSID: MO4021451
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HUNTERS RIDGE SUBD
Groundwater · Pop. 441
PWSID: MO4031206

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
14.2
15 ppb 1 ppb Warning

PFAS / Forever Chemicals

3 detected All below limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFBA9.3 pptNo standard500 pptUnregulated
PFHxS4.8 ppt10 ppt10 pptBelow limit
PFPeA3.8 pptNo standard—Unregulated

Violation History (Last 5 Years)

38Total (5yr)
13Health-Based
7Major