Is Weston Municipal Utilities Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Marathon

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.

health-based violations

157

violations on file

still open

Violation	Type	Status	Period
MR	Monitoring	Resolved	2023-04-01 → 2023-06-30
MR	Monitoring	Resolved	2023-04-01 → 2023-06-30
MR	Monitoring	Resolved	2023-04-01 → 2023-06-30
MR	Monitoring	Resolved	2023-04-01 → 2023-06-30
Other	Monitoring	Resolved	2009-10-01
Other	Monitoring	Resolved	2009-10-01
MR	Monitoring	Resolved	2009-07-01 → 2009-09-30
MR	Monitoring	Resolved	2009-07-01 → 2009-09-30
MR	Monitoring	Resolved	2009-07-01 → 2009-09-30
MR	Monitoring	Resolved	2009-07-01 → 2009-09-30

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
Fluoride	1149.5 µg/L 29% of the EPA limit 4000 µg/L worst single sample: 1360 µg/L	102/202	SYR4	2012–2019
Nitrate	5895 µg/L 59% of the EPA limit 10000 µg/L worst single sample: 6100 µg/L	102/102	SYR4	2012–2019
Copper	554 µg/L 43% of the EPA limit 1300 µg/L worst single sample: 670 µg/L	60/60	SYR4	2014–2017
Lead	3.7 µg/L 25% of the EPA limit 15 µg/L worst single sample: 6.9 µg/L	49/60	SYR4	2014–2017
Dibromochloromethane	4.035 µg/L No EPA limit set worst single sample: 4.8 µg/L	34/40	SYR4	2012–2019
Bromodichloromethane	6.02 µg/L No EPA limit set worst single sample: 6.3 µg/L	29/40	SYR4	2012–2019
Chloroform	12.5 µg/L No EPA limit set worst single sample: 18 µg/L	26/40	SYR4	2012–2019
TTHM	23.489 µg/L 29% of the EPA limit 80 µg/L worst single sample: 27.4 µg/L	23/24	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	10.37 µg/L 17% of the EPA limit 60 µg/L worst single sample: 11.88 µg/L	23/24	SYR4	2012–2019
Dibromoacetic Acid	1.5 µg/L No EPA limit set worst single sample: 1.9 µg/L	21/24	SYR4	2012–2019
Trichloroacetic Acid	2.74 µg/L No EPA limit set worst single sample: 3.3 µg/L	17/24	SYR4	2012–2019
Lead	0.00075 mg/L 5% of the EPA limit 0.0150 mg/L	15/15	LCR	2023
Dichloroacetic Acid	6.02 µg/L No EPA limit set worst single sample: 6.5 µg/L	13/24	SYR4	2012–2019
Bromoform	1.3215 µg/L No EPA limit set worst single sample: 1.8 µg/L	12/40	SYR4	2012–2019
Barium	132 µg/L 6.6% of the EPA limit 2000 µg/L worst single sample: 150 µg/L	10/10	SYR4	2014–2017
Nitrate-Nitrite	5665 µg/L 57% of the EPA limit 10000 µg/L worst single sample: 5800 µg/L	10/10	SYR4	2014–2017
Combined Radium (-226 And -228)	1.35 pCi/L 27% of the EPA limit 5 pCi/L	5/5	SYR4	2014
Monobromoacetic Acid	0.9830 µg/L No EPA limit set worst single sample: 1 µg/L	3/24	SYR4	2012–2019
Arsenic	1.1 µg/L 11% of the EPA limit 10 µg/L	1/10	SYR4	2014–2017
Chromium	1.1 µg/L 1.1% of the EPA limit 100 µg/L	1/10	SYR4	2014–2017
Ethylbenzene	0.4800 µg/L 0.1% of the EPA limit 700 µg/L	1/17	SYR4	2012–2019
Monochloroacetic Acid	1.3 µg/L No EPA limit set	1/24	SYR4	2012–2019
Xylenes, Total	4.1 µg/L 0% of the EPA limit 10000 µg/L	1/18	SYR4	2012–2019

50 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDinosebDiquatEndothallEndrinGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Frequently asked questions about Weston Municipal Utilities

Is Weston Municipal Utilities tap water safe to drink?

EPA monitoring detected 23 contaminants in Weston Municipal Utilities'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 Weston Municipal Utilities's water?

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

How many people does Weston Municipal Utilities serve?

Weston Municipal Utilities reports serving 16,000 people, per its EPA record.

Has Weston Municipal Utilities had any water quality violations?

The EPA has 157 violations on file for Weston Municipal Utilities, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 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.