Is Lancaster Waterworks Tap Water Safe? Quality Report

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

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	2013-09-01 → 2013-09-30
MCL	Health-based	Resolved	2013-09-01 → 2013-09-30
MCL	Health-based	Resolved	2013-09-01 → 2013-09-30
MCL	Health-based	Resolved	2013-09-01 → 2013-09-30
MCL	Health-based	Resolved	2013-09-01 → 2013-09-30
MCL	Health-based	Resolved	2012-07-01 → 2012-09-30
MCL	Health-based	Resolved	2012-07-01 → 2012-09-30
MCL	Health-based	Resolved	2012-07-01 → 2012-09-30
MCL	Health-based	Resolved	2012-07-01 → 2012-09-30
MCL	Health-based	Resolved	2012-04-01 → 2012-06-30

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
Fluoride	1150 µg/L 29% of the EPA limit 4000 µg/L worst single sample: 1340 µg/L	101/197	SYR4	2012–2019
Copper	950 µg/L 73% of the EPA limit 1300 µg/L worst single sample: 1200 µg/L	81/81	SYR4	2014–2019
Lead	3.06 µg/L 20% of the EPA limit 15 µg/L worst single sample: 26 µg/L	75/81	SYR4	2014–2019
Combined Radium (-226 And -228)	5.863 pCi/L 117% of the EPA limit, at the 95th percentile of samples — 5 pCi/L worst single sample: 7.12 pCi/L	23/23	SYR4	2012–2019
Lead	0.0018 mg/L 12% of the EPA limit 0.0150 mg/L	16/16	LCR	2023
Gross Alpha, Excl. Radon And U	8.035 pCi/L 54% of the EPA limit 15 pCi/L worst single sample: 9.34 pCi/L	11/11	SYR4	2016–2019
Bromodichloromethane	2.1 µg/L No EPA limit set	7/7	SYR4	2013–2019
Chloroform	5.9 µg/L No EPA limit set	7/7	SYR4	2013–2019
TTHM	8.687 µg/L 11% of the EPA limit 80 µg/L worst single sample: 8.78 µg/L	7/7	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	2.452 µg/L 4.1% of the EPA limit 60 µg/L worst single sample: 2.56 µg/L	7/7	SYR4	2013–2019
Nitrate	240 µg/L 2.4% of the EPA limit 10000 µg/L	6/32	SYR4	2012–2019
Barium	79 µg/L 4% of the EPA limit 2000 µg/L worst single sample: 83 µg/L	5/5	SYR4	2014–2017
Trichloroacetic Acid	0.7020 µg/L No EPA limit set worst single sample: 0.7100 µg/L	5/7	SYR4	2013–2019
Combined Uranium	0.3469 µg/L 1.2% of the EPA limit 30 µg/L worst single sample: 0.3640 µg/L	4/4	SYR4	2017–2018
Dichloroacetic Acid	1.74 µg/L No EPA limit set worst single sample: 1.8 µg/L	4/7	SYR4	2013–2019
Dibromochloromethane	0.8430 µg/L No EPA limit set worst single sample: 0.8500 µg/L	3/7	SYR4	2013–2019
Dibromoacetic Acid	0.2700 µg/L No EPA limit set	1/7	SYR4	2013–2019
Nitrate-Nitrite	76 µg/L 0.8% of the EPA limit 10000 µg/L	1/5	SYR4	2014–2017
Xylenes, Total	6.4 µg/L 0.1% of the EPA limit 10000 µg/L	1/29	SYR4	2012–2019

89 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

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Frequently asked questions about Lancaster Waterworks

Is Lancaster Waterworks tap water safe to drink?

EPA monitoring detected 19 contaminants in Lancaster 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 Lancaster Waterworks's water?

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

How many people does Lancaster Waterworks serve?

Lancaster Waterworks reports serving 3,907 people in Wisconsin, per its EPA record.

Has Lancaster Waterworks had any water quality violations?

The EPA has 39 violations on file for Lancaster 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.