Is Cross Plains Waterworks Tap Water Safe? Quality Report

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

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
MCL	Health-based	Resolved	1994-09-01 → 1994-09-30
MCL	Health-based	Resolved	1994-09-01 → 1994-09-30
MCL	Health-based	Resolved	1994-09-01 → 1994-09-30
MCL	Health-based	Resolved	1994-09-01 → 1994-09-30
MCL	Health-based	Resolved	1994-09-01 → 1994-09-30
MCL	Health-based	Resolved	1994-09-01 → 1994-09-30
MCL	Health-based	Resolved	1994-09-01 → 1994-09-30
MCL	Health-based	Resolved	1994-09-01 → 1994-09-30
MCL	Health-based	Resolved	1993-08-01 → 1993-08-31
MCL	Health-based	Resolved	1993-08-01 → 1993-08-31

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	1042.5 µg/L 26% of the EPA limit 4000 µg/L worst single sample: 1170 µg/L	96/196	SYR4	2012–2019
Nitrate-Nitrite	5440 µg/L 54% of the EPA limit 10000 µg/L worst single sample: 5600 µg/L	92/92	SYR4	2012–2019
Copper	274.5 µg/L 21% of the EPA limit 1300 µg/L worst single sample: 410 µg/L	40/40	SYR4	2014–2017
Lead	8.405 µg/L 56% of the EPA limit 15 µg/L worst single sample: 14 µg/L	40/40	SYR4	2014–2017
Lead	0.0048 mg/L 32% of the EPA limit 0.0150 mg/L	14/14	LCR	2023
Bromodichloromethane	2.38 µg/L No EPA limit set worst single sample: 2.5 µg/L	7/7	SYR4	2013–2019
Dibromochloromethane	2.51 µg/L No EPA limit set worst single sample: 2.6 µg/L	7/7	SYR4	2013–2019
TTHM	7.427 µg/L 9.3% of the EPA limit 80 µg/L worst single sample: 7.61 µg/L	7/7	SYR4	2013–2019
Bromoform	1.35 µg/L No EPA limit set worst single sample: 1.4 µg/L	6/7	SYR4	2013–2019
Chloroform	2.25 µg/L No EPA limit set worst single sample: 2.4 µg/L	6/7	SYR4	2013–2019
Xylenes, Total	2.5125 µg/L 0% of the EPA limit 10000 µg/L worst single sample: 3 µg/L	6/11	SYR4	2013–2019
Barium	39.55 µg/L 2% of the EPA limit 2000 µg/L worst single sample: 40 µg/L	4/4	SYR4	2014–2017
Chromium	1.67 µg/L 1.7% of the EPA limit 100 µg/L worst single sample: 1.7 µg/L	4/4	SYR4	2014–2017
Total Haloacetic Acids (HAA5)	1.285 µg/L 2.1% of the EPA limit 60 µg/L worst single sample: 1.3 µg/L	4/7	SYR4	2013–2019
Dibromoacetic Acid	1.29 µg/L No EPA limit set worst single sample: 1.3 µg/L	3/7	SYR4	2013–2019
Combined Radium (-226 And -228)	1.2475 pCi/L 25% of the EPA limit 5 pCi/L worst single sample: 1.25 pCi/L	2/2	SYR4	2014
Dichloroacetic Acid	1.2 µg/L No EPA limit set	1/7	SYR4	2013–2019
Ethylbenzene	0.8200 µg/L 0.1% of the EPA limit 700 µg/L	1/11	SYR4	2013–2019

84 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDinosebDiquatEndothallEndrinGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

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Frequently asked questions about Cross Plains Waterworks

Is Cross Plains Waterworks tap water safe to drink?

EPA monitoring detected 18 contaminants in Cross Plains 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 Cross Plains Waterworks's water?

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

How many people does Cross Plains Waterworks serve?

Cross Plains Waterworks reports serving 4,100 people in Wisconsin, per its EPA record.

Has Cross Plains Waterworks had any water quality violations?

The EPA has 17 violations on file for Cross Plains Waterworks, of which 13 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.