Is North Fond Du Lac Waterworks Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Fond du Lac

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	2024-10-17
TT	Health-based	Resolved	2024-10-17
MCL	Health-based	Resolved	2019-10-01 → 2019-12-31
MCL	Health-based	Resolved	2019-10-01 → 2019-12-31
MCL	Health-based	Resolved	2019-10-01 → 2019-12-31
MCL	Health-based	Resolved	2019-10-01 → 2019-12-31
MCL	Health-based	Resolved	2019-10-01 → 2019-12-31
MCL	Health-based	Resolved	2019-10-01 → 2019-12-31
MCL	Health-based	Resolved	2019-10-01 → 2019-12-31
MCL	Health-based	Resolved	2019-10-01 → 2019-12-31

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	1560 µg/L 39% of the EPA limit 4000 µg/L worst single sample: 2320 µg/L	100/198	SYR4	2012–2019
Copper	240.5 µg/L 19% of the EPA limit 1300 µg/L worst single sample: 390 µg/L	80/80	SYR4	2012–2017
Lead	6.82 µg/L 45% of the EPA limit 15 µg/L worst single sample: 18 µg/L	80/80	SYR4	2012–2017
Lead	0.0091 mg/L 61% of the EPA limit 0.0150 mg/L	20/20	LCR	2023
Bromodichloromethane	19.6 µg/L No EPA limit set worst single sample: 20 µg/L	9/9	SYR4	2012–2019
Bromoform	5.26 µg/L No EPA limit set worst single sample: 5.3 µg/L	9/9	SYR4	2012–2019
Chloroform	17 µg/L No EPA limit set worst single sample: 19 µg/L	9/9	SYR4	2012–2019
Combined Radium (-226 And -228)	6.918 pCi/L 138% of the EPA limit, at the 95th percentile of samples — 5 pCi/L worst single sample: 7.35 pCi/L	9/9	SYR4	2014–2019
Dibromochloromethane	19 µg/L No EPA limit set	9/9	SYR4	2012–2019
Dibromoacetic Acid	5.17 µg/L No EPA limit set worst single sample: 5.8 µg/L	7/7	SYR4	2012–2019
Dichloroacetic Acid	6.39 µg/L No EPA limit set worst single sample: 6.6 µg/L	7/7	SYR4	2012–2019
TTHM	57.58 µg/L 72% of the EPA limit 80 µg/L worst single sample: 57.7 µg/L	7/7	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	15.02 µg/L 25% of the EPA limit 60 µg/L worst single sample: 15.5 µg/L	7/7	SYR4	2012–2019
Trichloroacetic Acid	3.87 µg/L No EPA limit set worst single sample: 4.2 µg/L	7/7	SYR4	2012–2019
Monobromoacetic Acid	1.37 µg/L No EPA limit set worst single sample: 1.4 µg/L	4/7	SYR4	2012–2019
Arsenic	1.19 µg/L 12% of the EPA limit 10 µg/L worst single sample: 1.2 µg/L	2/2	SYR4	2014–2017
Barium	39.9 µg/L 2% of the EPA limit 2000 µg/L worst single sample: 40 µg/L	2/2	SYR4	2014–2017
Gross Alpha, Excl. Radon And U	6.013 pCi/L 40% of the EPA limit 15 pCi/L worst single sample: 6.18 pCi/L	2/2	SYR4	2014–2017
Monochloroacetic Acid	1.4 µg/L No EPA limit set	1/7	SYR4	2012–2019

55 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 TetrachlorideChlordaneChromiumDichloromethaneDalaponDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitrateNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about North Fond Du Lac Waterworks

Is North Fond Du Lac Waterworks tap water safe to drink?

EPA monitoring detected 19 contaminants in North Fond Du Lac 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 North Fond Du Lac Waterworks's water?

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

How many people does North Fond Du Lac Waterworks serve?

North Fond Du Lac Waterworks reports serving 5,414 people in Wisconsin, per its EPA record.

Has North Fond Du Lac Waterworks had any water quality violations?

The EPA has 86 violations on file for North Fond Du Lac Waterworks, of which 17 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.