Is Marshfield Utilities Tap Water Safe? Quality Report

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

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

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2020-11-01
TT	Health-based	Resolved	2020-11-01
TT	Health-based	Resolved	2020-11-01
TT	Health-based	Resolved	2020-11-01
MR	Monitoring	Resolved	2015-07-01 → 2015-09-30
MR	Monitoring	Resolved	2015-07-01 → 2015-09-30
MR	Monitoring	Resolved	2015-07-01 → 2015-09-30
MR	Monitoring	Resolved	2015-07-01 → 2015-09-30
MR	Monitoring	Resolved	2015-07-01 → 2015-09-30
MR	Monitoring	Resolved	2015-07-01 → 2015-09-30

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 µg/L 29% of the EPA limit 4000 µg/L worst single sample: 1220 µg/L	102/198	SYR4	2012–2019
Copper	455.5 µg/L 35% of the EPA limit 1300 µg/L worst single sample: 750 µg/L	90/90	SYR4	2013–2019
Lead	11.56 µg/L 77% of the EPA limit 15 µg/L worst single sample: 130 µg/L	90/91	SYR4	2013–2019
Bromodichloromethane	12 µg/L No EPA limit set worst single sample: 13 µg/L	61/71	SYR4	2012–2019
Dibromochloromethane	5.35 µg/L No EPA limit set worst single sample: 7.3 µg/L	59/71	SYR4	2012–2019
Nitrate	3830 µg/L 38% of the EPA limit 10000 µg/L worst single sample: 4000 µg/L	38/38	SYR4	2012–2019
Chloroform	22.8 µg/L No EPA limit set worst single sample: 33 µg/L	37/71	SYR4	2012–2019
TTHM	46.798 µg/L 58% of the EPA limit 80 µg/L worst single sample: 49.8 µg/L	20/20	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	15.461 µg/L 26% of the EPA limit 60 µg/L worst single sample: 15.67 µg/L	20/20	SYR4	2012–2019
Lead	0.0082 mg/L 55% of the EPA limit 0.0150 mg/L	19/19	LCR	2025
Tetrachloroethylene	1.01 µg/L 20% of the EPA limit 5 µg/L worst single sample: 1.1 µg/L	19/60	SYR4	2012–2019
Trichloroacetic Acid	7.99 µg/L No EPA limit set worst single sample: 8.8 µg/L	19/20	SYR4	2012–2019
Dichloroacetic Acid	7.16 µg/L No EPA limit set worst single sample: 8.2 µg/L	17/20	SYR4	2012–2019
Dibromoacetic Acid	1.7 µg/L No EPA limit set	15/20	SYR4	2012–2019
Combined Radium (-226 And -228)	2.9836 pCi/L 60% of the EPA limit 5 pCi/L worst single sample: 4.279 pCi/L	13/13	SYR4	2012–2017
Bromoform	1.83 µg/L No EPA limit set worst single sample: 1.9 µg/L	8/71	SYR4	2012–2019
Barium	127.5 µg/L 6.4% of the EPA limit 2000 µg/L worst single sample: 141 µg/L	7/7	SYR4	2013–2017
Nitrate-Nitrite	3940 µg/L 39% of the EPA limit 10000 µg/L worst single sample: 4300 µg/L	7/7	SYR4	2013–2017
Gross Alpha, Excl. Radon And U	4.6635 pCi/L 31% of the EPA limit 15 pCi/L worst single sample: 4.86 pCi/L	4/4	SYR4	2013–2019
Combined Uranium	1.3514 µg/L 4.5% of the EPA limit 30 µg/L worst single sample: 1.4 µg/L	3/3	SYR4	2013–2019
Monobromoacetic Acid	0.5380 µg/L No EPA limit set worst single sample: 0.5500 µg/L	3/20	SYR4	2012–2019
Chromium	1.092 µg/L 1.1% of the EPA limit 100 µg/L worst single sample: 1.1 µg/L	2/6	SYR4	2014–2017
Arsenic	1.1 µg/L 11% of the EPA limit 10 µg/L	1/6	SYR4	2014–2017
Monochloroacetic Acid	3 µg/L No EPA limit set	1/20	SYR4	2012–2019
Selenium	0.9000 µg/L 1.8% of the EPA limit 50 µg/L	1/7	SYR4	2013–2017

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 TetrachlorideChlordaneDichloromethaneDalaponDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about Marshfield Utilities

Is Marshfield Utilities tap water safe to drink?

EPA monitoring detected 25 contaminants in Marshfield 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 Marshfield Utilities's water?

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

How many people does Marshfield Utilities serve?

Marshfield Utilities reports serving 18,815 people in Wisconsin, per its EPA record.

Has Marshfield Utilities had any water quality violations?

The EPA has 16 violations on file for Marshfield Utilities, of which 4 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.