Is Curtiss Waterworks Tap Water Safe? Quality Report

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

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

103

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2015-08-02
TT	Health-based	Resolved	2015-08-02
TT	Health-based	Resolved	2015-08-02
TT	Health-based	Resolved	2015-08-02
TT	Health-based	Resolved	2015-08-02
MCL	Health-based	Resolved	2010-04-01 → 2010-04-30
MCL	Health-based	Resolved	2010-04-01 → 2010-04-30
MCL	Health-based	Resolved	2010-04-01 → 2010-04-30
MCL	Health-based	Resolved	2010-04-01 → 2010-04-30
MCL	Health-based	Resolved	1999-04-01 → 1999-04-30

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
Nitrate	2250 µg/L 23% of the EPA limit 10000 µg/L	20/20	SYR4	2012–2019
Lead	0.00064 mg/L 4.2% of the EPA limit 0.0150 mg/L	16/16	LCR	2023
Combined Radium (-226 And -228)	6.022 pCi/L 120% of the EPA limit, at the 95th percentile of samples — 5 pCi/L worst single sample: 7.1 pCi/L	12/12	SYR4	2013–2018
Copper	378 µg/L 29% of the EPA limit 1300 µg/L worst single sample: 444 µg/L	11/11	SYR4	2013–2017
Combined Uranium	0.8795 µg/L 2.9% of the EPA limit 30 µg/L worst single sample: 0.9200 µg/L	10/10	SYR4	2016–2018
Barium	126.25 µg/L 6.3% of the EPA limit 2000 µg/L worst single sample: 131 µg/L	6/6	SYR4	2013–2017
Gross Alpha, Excl. Radon And U	4.095 pCi/L 27% of the EPA limit 15 pCi/L worst single sample: 4.5 pCi/L	6/6	SYR4	2013–2018
Lead	5.0475 µg/L 34% of the EPA limit 15 µg/L worst single sample: 6.04 µg/L	6/11	SYR4	2014–2017
Fluoride	151270 µg/L 3782% of the EPA limit, at the 95th percentile of samples — 4000 µg/L worst single sample: 189000 µg/L	5/6	SYR4	2013–2017
Nitrate-Nitrite	1157.25 µg/L 12% of the EPA limit 10000 µg/L worst single sample: 1200 µg/L	4/4	SYR4	2013–2017
Arsenic	7.5 µg/L 75% of the EPA limit 10 µg/L worst single sample: 8 µg/L	3/5	SYR4	2014–2017
Bromodichloromethane	4.322 µg/L No EPA limit set worst single sample: 4.42 µg/L	3/3	SYR4	2014–2018
Chloroform	21.18 µg/L No EPA limit set worst single sample: 22.1 µg/L	3/3	SYR4	2014–2018
Dichloroacetic Acid	6.445 µg/L No EPA limit set worst single sample: 6.64 µg/L	2/2	SYR4	2014–2017
Monochloroacetic Acid	9.567 µg/L No EPA limit set worst single sample: 9.83 µg/L	2/2	SYR4	2014–2017
TTHM	25.8185 µg/L 32% of the EPA limit 80 µg/L worst single sample: 26.52 µg/L	2/2	SYR4	2014–2017
Total Haloacetic Acids (HAA5)	24.874 µg/L 41% of the EPA limit 60 µg/L worst single sample: 25.721 µg/L	2/2	SYR4	2014–2017
Trichloroacetic Acid	8.386 µg/L No EPA limit set worst single sample: 8.75 µg/L	2/2	SYR4	2014–2017
Dibromochloromethane	1.68 µg/L No EPA limit set	1/2	SYR4	2014–2017
Toluene	6.04 µg/L 0.6% of the EPA limit 1000 µg/L	1/15	SYR4	2012–2019

59 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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

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Frequently asked questions about Curtiss Waterworks

Is Curtiss Waterworks tap water safe to drink?

EPA monitoring detected 20 contaminants in Curtiss 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 Curtiss Waterworks's water?

EPA monitoring detected Nitrate, Lead, Combined Radium (-226 And -228), Copper, Combined Uranium, and others. The full list with the level and data source for each is above.

How many people does Curtiss Waterworks serve?

Curtiss Waterworks reports serving 346 people in Wisconsin, per its EPA record.

Has Curtiss Waterworks had any water quality violations?

The EPA has 103 violations on file for Curtiss Waterworks, of which 14 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.