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Tap water quality report

St Francois County Pwsd 1

EPA monitoring tested this supplier for 63 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

63
contaminants tested
9
detected
140
people served
4
health-based violations
Missouri rankingsLead in MissouriPFAS in Missouri
Water source
Ground water
Ownership
Local government
Counties served
St. Francois

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

4
health-based violations
21
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2005-01-01 → 2005-12-31
MCL Health-based Resolved 2005-01-01 → 2005-12-31
MCL Health-based Resolved 2005-01-01 → 2005-12-31
MCL Health-based Resolved 2005-01-01 → 2005-12-31
RPT Monitoring Unaddressed 2025-07-02
RPT Monitoring Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
RPT Monitoring Resolved 2024-10-17
Other Monitoring Resolved 2020-07-01
Other Monitoring Resolved 2014-07-01

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 19/19 LCR 2025
Copper
25.015 µg/L 1.9%
of the EPA limit 1300 µg/L
worst single sample: 105 µg/L
18/18 SYR4 2012–2019
Nitrate-Nitrite
560 µg/L 5.6%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Barium
63.31 µg/L 3.2%
of the EPA limit 2000 µg/L
worst single sample: 63.5 µg/L
3/3 SYR4 2012–2018
Fluoride
166 µg/L 4.2%
of the EPA limit 4000 µg/L
worst single sample: 170 µg/L
3/3 SYR4 2012–2018
Combined Radium (-226 And -228)
3.565 pCi/L 71%
of the EPA limit 5 pCi/L
worst single sample: 3.6 pCi/L
2/2 SYR4 2014–2017
Arsenic
1.09 µg/L 11%
of the EPA limit 10 µg/L
 1/3 SYR4 2012–2018
Chromium
4.8 µg/L 4.8%
of the EPA limit 100 µg/L
 1/3 SYR4 2012–2018
Lead
7.52 µg/L 50%
of the EPA limit 15 µg/L
 1/18 SYR4 2012–2019
54 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDibromochloromethaneDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HARMON, KATHLEEN
Email
[email protected]

Frequently asked questions about St Francois County Pwsd 1

Is St Francois County Pwsd 1 tap water safe to drink?

EPA monitoring detected 9 contaminants in St Francois County Pwsd 1's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in St Francois County Pwsd 1's water?

EPA monitoring detected Lead, Copper, Nitrate-Nitrite, Barium, Fluoride, and others. The full list with the level and data source for each is above.

How many people does St Francois County Pwsd 1 serve?

St Francois County Pwsd 1 reports serving 140 people in Missouri, per its EPA record.

Has St Francois County Pwsd 1 had any water quality violations?

The EPA has 21 violations on file for St Francois County Pwsd 1, of which 4 are health-based (a contaminant limit or required treatment was breached) and 1 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.