Is Schofield Waterworks 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

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2009-01-01
MCL	Health-based	Resolved	2001-08-01 → 2001-08-31
MCL	Health-based	Resolved	2001-08-01 → 2001-08-31
MCL	Health-based	Resolved	2001-08-01 → 2001-08-31
MCL	Health-based	Resolved	2001-08-01 → 2001-08-31
MCL	Health-based	Resolved	2001-08-01 → 2001-08-31
RPT	Monitoring	Resolved	2025-07-02
MR	Monitoring	Resolved	2017-01-01 → 2017-12-31
MR	Monitoring	Resolved	2017-01-01 → 2017-12-31
MR	Monitoring	Resolved	2017-01-01 → 2017-12-31

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	1196 µg/L 30% of the EPA limit 4000 µg/L worst single sample: 1450 µg/L	99/198	SYR4	2012–2019
Copper	290.1 µg/L 22% of the EPA limit 1300 µg/L worst single sample: 441 µg/L	80/80	SYR4	2012–2017
Lead	15.72 µg/L 105% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 30.8 µg/L	48/80	SYR4	2012–2017
Nitrate	4700 µg/L 47% of the EPA limit 10000 µg/L	36/36	SYR4	2012–2019
Dibromochloromethane	2.93 µg/L No EPA limit set worst single sample: 3.1 µg/L	35/40	SYR4	2012–2019
Bromoform	2.46 µg/L No EPA limit set worst single sample: 3 µg/L	29/36	SYR4	2012–2019
Bromodichloromethane	1.98 µg/L No EPA limit set worst single sample: 2.2 µg/L	25/38	SYR4	2012–2019
TTHM	7.907 µg/L 9.9% of the EPA limit 80 µg/L worst single sample: 8.06 µg/L	18/18	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	17/17	LCR	2023
Total Haloacetic Acids (HAA5)	2.196 µg/L 3.7% of the EPA limit 60 µg/L worst single sample: 2.7 µg/L	17/18	SYR4	2012–2019
Dibromoacetic Acid	1.54 µg/L No EPA limit set worst single sample: 1.6 µg/L	13/18	SYR4	2012–2019
Barium	62.25 µg/L 3.1% of the EPA limit 2000 µg/L worst single sample: 63 µg/L	6/6	SYR4	2014–2017
Chloroform	1.295 µg/L No EPA limit set worst single sample: 1.4 µg/L	6/35	SYR4	2012–2019
Nitrate-Nitrite	4675 µg/L 47% of the EPA limit 10000 µg/L worst single sample: 4800 µg/L	6/6	SYR4	2014–2017
Dichloroacetic Acid	0.5585 µg/L No EPA limit set worst single sample: 0.5600 µg/L	4/18	SYR4	2012–2019
Combined Radium (-226 And -228)	1.45 pCi/L 29% of the EPA limit 5 pCi/L	3/3	SYR4	2014
Chromium	3.4 µg/L 3.4% of the EPA limit 100 µg/L	1/6	SYR4	2014–2017
Trichloroacetic Acid	0.2200 µg/L No EPA limit set	1/18	SYR4	2012–2019
Xylenes, Total	2.5 µg/L 0% of the EPA limit 10000 µg/L	1/36	SYR4	2012–2019

58 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, TotalArsenicAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about Schofield Waterworks

Is Schofield Waterworks tap water safe to drink?

EPA monitoring detected 19 contaminants in Schofield Waterworks'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 Schofield Waterworks's water?

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

How many people does Schofield Waterworks serve?

Schofield Waterworks reports serving 2,205 people in Wisconsin, per its EPA record.

Has Schofield Waterworks had any water quality violations?

The EPA has 46 violations on file for Schofield Waterworks, of which 6 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.