Is Farmington Tap Water Safe? Quality Report

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.

521

health-based violations

547

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2024-10-01 → 2025-09-30
MCL	Health-based	Resolved	2024-10-01 → 2025-09-30
MCL	Health-based	Resolved	2024-10-01 → 2025-09-30
MCL	Health-based	Resolved	2024-07-01 → 2025-06-30
MCL	Health-based	Resolved	2024-07-01 → 2025-06-30
MCL	Health-based	Resolved	2024-07-01 → 2025-06-30
MCL	Health-based	Resolved	2024-07-01 → 2025-06-30
MCL	Health-based	Resolved	2015-11-01 → 2015-11-30
MCL	Health-based	Resolved	2015-11-01 → 2015-11-30
MCL	Health-based	Resolved	2015-11-01 → 2015-11-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
PFHXS	0.0048 µg/L	2/28	2025
Pfpea	0.0038 µg/L	1/28	2025

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate-Nitrite	1770 µg/L 18% of the EPA limit 10000 µg/L worst single sample: 2600 µg/L	212/212	SYR4	2012–2019
Gross Alpha, Excl. Radon And U	18.3 pCi/L 122% of the EPA limit, at the 95th percentile of samples — 15 pCi/L worst single sample: 31.8 pCi/L	107/112	SYR4	2012–2019
Copper	209.35 µg/L 16% of the EPA limit 1300 µg/L worst single sample: 438 µg/L	100/130	SYR4	2012–2018
Combined Radium (-226 And -228)	7.87 pCi/L 157% of the EPA limit, at the 95th percentile of samples — 5 pCi/L worst single sample: 11.5 pCi/L	87/207	SYR4	2012–2019
Lead	14.2 µg/L 95% of the EPA limit 15 µg/L worst single sample: 33.5 µg/L	61/130	SYR4	2012–2018
Combined Uranium	19.966 µg/L 67% of the EPA limit 30 µg/L worst single sample: 24.436 µg/L	51/111	SYR4	2012–2019
Chromium	3.78 µg/L 3.8% of the EPA limit 100 µg/L worst single sample: 3.91 µg/L	36/52	SYR4	2012–2018
Barium	4.63 µg/L 0.2% of the EPA limit 2000 µg/L worst single sample: 5.03 µg/L	25/40	SYR4	2012–2018
Lead	0.0048 mg/L 32% of the EPA limit 0.0150 mg/L	25/25	LCR	2024
Bromodichloromethane	4.848 µg/L No EPA limit set worst single sample: 5.86 µg/L	9/60	SYR4	2012–2019
Chloroform	5.346 µg/L No EPA limit set worst single sample: 7.41 µg/L	9/60	SYR4	2012–2019
Dibromochloromethane	4.8535 µg/L No EPA limit set worst single sample: 4.99 µg/L	8/60	SYR4	2012–2019
Bromoform	11.35 µg/L No EPA limit set worst single sample: 12.1 µg/L	7/60	SYR4	2012–2019
TTHM	21.09 µg/L 26% of the EPA limit 80 µg/L worst single sample: 21.6 µg/L	7/22	SYR4	2016–2019
Arsenic	2.866 µg/L 29% of the EPA limit 10 µg/L worst single sample: 2.95 µg/L	3/40	SYR4	2012–2018
Dibromoacetic Acid	2.6105 µg/L No EPA limit set worst single sample: 2.66 µg/L	2/22	SYR4	2016–2019
Dichloroacetic Acid	6.809 µg/L No EPA limit set worst single sample: 6.82 µg/L	2/22	SYR4	2016–2019
Fluoride	2655.5 µg/L 66% of the EPA limit 4000 µg/L worst single sample: 2790 µg/L	2/40	SYR4	2012–2018
Toluene	0.6200 µg/L 0.1% of the EPA limit 1000 µg/L	1/40	SYR4	2012–2018

81 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: BEAVERS, GREGORY S
Phone: 573-756-1701

Frequently asked questions about Farmington

Is Farmington tap water safe to drink?

EPA monitoring detected 21 contaminants in Farmington'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 Farmington's water?

EPA monitoring detected Nitrate-Nitrite, Gross Alpha, Excl. Radon And U, Copper, Combined Radium (-226 And -228), Lead, and others. The full list with the level and data source for each is above.

How many people does Farmington serve?

Farmington reports serving 18,217 people in Missouri, per its EPA record.

Has Farmington had any water quality violations?

The EPA has 547 violations on file for Farmington, of which 521 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.