Is Germantown Water Utility Tap Water Safe? Quality Report

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

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

329

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	1998-01-01 → 2007-04-18
MCL	Health-based	Resolved	1998-01-01 → 2007-04-18
MCL	Health-based	Resolved	1998-01-01 → 2007-04-18
MCL	Health-based	Resolved	1998-01-01 → 2007-04-18
MCL	Health-based	Resolved	1998-01-01 → 2007-04-18
MCL	Health-based	Resolved	1998-01-01 → 2007-04-18
MCL	Health-based	Archived	1988-09-27 → 1992-09-26
MCL	Health-based	Archived	1988-09-27 → 1992-09-26

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	810 µg/L 20% of the EPA limit 4000 µg/L worst single sample: 900 µg/L	107/204	SYR4	2012–2019
Copper	624 µg/L 48% of the EPA limit 1300 µg/L worst single sample: 780 µg/L	60/60	SYR4	2014–2017
Lead	5.6 µg/L 37% of the EPA limit 15 µg/L worst single sample: 18 µg/L	60/60	SYR4	2014–2017
Nitrate	1425 µg/L 14% of the EPA limit 10000 µg/L worst single sample: 1800 µg/L	36/70	SYR4	2012–2019
Gross Alpha, Excl. Radon And U	14.9093 pCi/L 99% of the EPA limit 15 pCi/L worst single sample: 27.5 pCi/L	33/33	SYR4	2012–2019
Combined Radium (-226 And -228)	10.0955 pCi/L 202% of the EPA limit, at the 95th percentile of samples — 5 pCi/L worst single sample: 12.33 pCi/L	28/28	SYR4	2013–2019
TTHM	11 µg/L 14% of the EPA limit 80 µg/L	21/21	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	2.776 µg/L 4.6% of the EPA limit 60 µg/L worst single sample: 3.28 µg/L	19/21	SYR4	2012–2019
Dibromochloromethane	4.24 µg/L No EPA limit set worst single sample: 4.4 µg/L	17/63	SYR4	2012–2019
Bromodichloromethane	3.49 µg/L No EPA limit set worst single sample: 3.7 µg/L	15/63	SYR4	2012–2019
Lead	0.0017 mg/L 11% of the EPA limit 0.0150 mg/L	15/15	LCR	2023
Dibromoacetic Acid	1.46 µg/L No EPA limit set worst single sample: 1.7 µg/L	13/21	SYR4	2012–2019
Barium	120 µg/L 6% of the EPA limit 2000 µg/L	12/12	SYR4	2014–2017
Bromoform	1.955 µg/L No EPA limit set worst single sample: 2 µg/L	10/63	SYR4	2012–2019
Chloroform	2.495 µg/L No EPA limit set worst single sample: 2.9 µg/L	10/63	SYR4	2012–2019
Combined Uranium	0.4969 µg/L 1.7% of the EPA limit 30 µg/L worst single sample: 0.5070 µg/L	8/8	SYR4	2012–2019
Dichloroacetic Acid	1.776 µg/L No EPA limit set worst single sample: 2 µg/L	5/21	SYR4	2012–2019
Nitrate-Nitrite	1226 µg/L 12% of the EPA limit 10000 µg/L worst single sample: 1300 µg/L	5/12	SYR4	2014–2017
Trichloroacetic Acid	0.5690 µg/L No EPA limit set worst single sample: 0.5800 µg/L	3/21	SYR4	2012–2019
Arsenic	1.29 µg/L 13% of the EPA limit 10 µg/L worst single sample: 1.3 µg/L	2/12	SYR4	2014–2017
Antimony, Total	0.2500 µg/L 4.2% of the EPA limit 6 µg/L	1/12	SYR4	2014–2017

56 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 EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

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Frequently asked questions about Germantown Water Utility

Is Germantown Water Utility tap water safe to drink?

EPA monitoring detected 21 contaminants in Germantown Water Utility'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 Germantown Water Utility's water?

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

How many people does Germantown Water Utility serve?

Germantown Water Utility reports serving 20,027 people in Wisconsin, per its EPA record.

Has Germantown Water Utility had any water quality violations?

The EPA has 329 violations on file for Germantown Water Utility, of which 18 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.