Is 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

369

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	2008-01-01 → 2009-04-22
MCL	Health-based	Resolved	2008-01-01 → 2009-04-22
MCL	Health-based	Resolved	2008-01-01 → 2009-04-22
MCL	Health-based	Resolved	2008-01-01 → 2008-12-31
MCL	Health-based	Resolved	2008-01-01 → 2008-12-31
MCL	Health-based	Resolved	2008-01-01 → 2008-12-31
MCL	Health-based	Resolved	2008-01-01 → 2008-12-31
MCL	Health-based	Resolved	2008-01-01 → 2010-01-15

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
Copper	789.5 µg/L 61% of the EPA limit 1300 µg/L worst single sample: 1700 µg/L	422/422	SYR4	2014–2019
Lead	15 µg/L 100% of the EPA limit 15 µg/L worst single sample: 53 µg/L	422/422	SYR4	2014–2019
Bromoform	35.6 µg/L No EPA limit set worst single sample: 51 µg/L	129/162	SYR4	2012–2019
Gross Alpha, Excl. Radon And U	17.84 pCi/L 119% of the EPA limit, at the 95th percentile of samples — 15 pCi/L worst single sample: 24 pCi/L	129/129	SYR4	2012–2019
Dibromochloromethane	9.88 µg/L No EPA limit set worst single sample: 16 µg/L	122/162	SYR4	2012–2019
Combined Radium (-226 And -228)	12.108 pCi/L 242% of the EPA limit, at the 95th percentile of samples — 5 pCi/L worst single sample: 23.74 pCi/L	114/114	SYR4	2012–2019
TTHM	46.761 µg/L 58% of the EPA limit 80 µg/L worst single sample: 60.67 µg/L	98/98	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	8.832 µg/L 15% of the EPA limit 60 µg/L worst single sample: 108.6 µg/L	98/98	SYR4	2012–2019
Dibromoacetic Acid	6.6 µg/L No EPA limit set worst single sample: 9.2 µg/L	97/98	SYR4	2012–2019
Bromodichloromethane	2.99 µg/L No EPA limit set worst single sample: 3.6 µg/L	83/162	SYR4	2012–2019
Fluoride	982.4 µg/L 25% of the EPA limit 4000 µg/L worst single sample: 1030 µg/L	75/141	SYR4	2012–2018
Combined Uranium	1.672 µg/L 5.6% of the EPA limit 30 µg/L worst single sample: 1.84 µg/L	59/59	SYR4	2014–2019
Monobromoacetic Acid	1.53 µg/L No EPA limit set worst single sample: 2.1 µg/L	55/98	SYR4	2012–2019
Dichloroacetic Acid	0.7740 µg/L No EPA limit set worst single sample: 13 µg/L	37/98	SYR4	2012–2019
Lead	0.0061 mg/L 41% of the EPA limit 0.0150 mg/L	25/25	LCR	2025
Nitrate	148.5 µg/L 1.5% of the EPA limit 10000 µg/L worst single sample: 150 µg/L	24/50	SYR4	2012–2019
Arsenic	4.44 µg/L 44% of the EPA limit 10 µg/L worst single sample: 4.6 µg/L	17/34	SYR4	2012–2018
Barium	51.8 µg/L 2.6% of the EPA limit 2000 µg/L worst single sample: 61 µg/L	9/9	SYR4	2014–2017
Nitrate-Nitrite	110 µg/L 1.1% of the EPA limit 10000 µg/L	5/9	SYR4	2014–2017
Trichloroacetic Acid	0.2750 µg/L No EPA limit set worst single sample: 0.2800 µg/L	3/98	SYR4	2012–2019
Chloroform	1.1845 µg/L No EPA limit set worst single sample: 1.2 µg/L	2/162	SYR4	2012–2019
Antimony, Total	1.3 µg/L 22% of the EPA limit 6 µg/L	1/9	SYR4	2014–2017
Monochloroacetic Acid	93 µg/L No EPA limit set	1/98	SYR4	2012–2019
Toluene	0.6800 µg/L 0.1% of the EPA limit 1000 µg/L	1/65	SYR4	2012–2019
Xylenes, Total	3.2 µg/L 0% of the EPA limit 10000 µg/L	1/64	SYR4	2012–2019

52 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-DAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Frequently asked questions about Fond Du Lac Waterworks

Is Fond Du Lac Waterworks tap water safe to drink?

EPA monitoring detected 25 contaminants in 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 Fond Du Lac Waterworks's water?

EPA monitoring detected Copper, Lead, Bromoform, Gross Alpha, Excl. Radon And U, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Fond Du Lac Waterworks serve?

Fond Du Lac Waterworks reports serving 44,678 people, per its EPA record.

Has Fond Du Lac Waterworks had any water quality violations?

The EPA has 369 violations on file for Fond Du Lac Waterworks, of which 91 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.