Is Platteville 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

110

violations on file

still open

Violation	Type	Status	Period
MR	Monitoring	Resolved	2019-07-01 → 2019-09-30
MR	Monitoring	Resolved	2019-07-01 → 2019-09-30
MR	Monitoring	Resolved	2019-07-01 → 2019-09-30
MR	Monitoring	Resolved	2019-07-01 → 2019-09-30
MR	Monitoring	Resolved	2019-07-01 → 2019-09-30
MR	Monitoring	Resolved	2019-07-01 → 2019-09-30
MR	Monitoring	Resolved	2019-07-01 → 2019-09-30
MR	Monitoring	Resolved	2019-07-01 → 2019-09-30
MR	Monitoring	Resolved	2019-07-01 → 2019-09-30
MR	Monitoring	Resolved	2019-07-01 → 2019-09-30

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	840 µg/L 21% of the EPA limit 4000 µg/L worst single sample: 1200 µg/L	101/199	SYR4	2012–2019
Copper	173.3 µg/L 13% of the EPA limit 1300 µg/L worst single sample: 279 µg/L	43/60	SYR4	2014–2017
Lead	16.6 µg/L 111% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 49.5 µg/L	41/60	SYR4	2014–2017
Nitrate	350 µg/L 3.5% of the EPA limit 10000 µg/L	18/48	SYR4	2012–2019
Lead	0.0103 mg/L 69% of the EPA limit 0.0150 mg/L	17/17	LCR	2025
Total Haloacetic Acids (HAA5)	2.11325 µg/L 3.5% of the EPA limit 60 µg/L worst single sample: 2.15 µg/L	16/19	SYR4	2012–2019
Chloroform	2.2185 µg/L No EPA limit set worst single sample: 2.68 µg/L	14/31	SYR4	2012–2019
TTHM	3.4905 µg/L 4.4% of the EPA limit 80 µg/L worst single sample: 4.355 µg/L	14/19	SYR4	2012–2019
Monochloroacetic Acid	1.856 µg/L No EPA limit set worst single sample: 1.9 µg/L	12/19	SYR4	2012–2019
Bromodichloromethane	1.2515 µg/L No EPA limit set worst single sample: 1.36 µg/L	8/31	SYR4	2012–2019
Barium	63.92 µg/L 3.2% of the EPA limit 2000 µg/L worst single sample: 64.1 µg/L	7/7	SYR4	2014–2019
Combined Radium (-226 And -228)	3.676 pCi/L 74% of the EPA limit 5 pCi/L worst single sample: 4 pCi/L	7/7	SYR4	2014–2019
Gross Alpha, Excl. Radon And U	8.0912 pCi/L 54% of the EPA limit 15 pCi/L worst single sample: 8.306 pCi/L	7/7	SYR4	2014–2019
Combined Uranium	1.1312 µg/L 3.8% of the EPA limit 30 µg/L worst single sample: 1.2 µg/L	5/5	SYR4	2017–2019
Dibromochloromethane	0.8273 µg/L No EPA limit set worst single sample: 0.8870 µg/L	4/31	SYR4	2012–2019
Arsenic	2 µg/L 20% of the EPA limit 10 µg/L	3/7	SYR4	2014–2019
Nitrate-Nitrite	371.1 µg/L 3.7% of the EPA limit 10000 µg/L worst single sample: 374 µg/L	2/6	SYR4	2014–2017
Trichloroacetic Acid	0.8046 µg/L No EPA limit set worst single sample: 0.8230 µg/L	2/19	SYR4	2012–2019
Antimony, Total	0.4000 µg/L 6.7% of the EPA limit 6 µg/L	1/7	SYR4	2014–2019
Cadmium	2 µg/L 40% of the EPA limit 5 µg/L	1/6	SYR4	2014–2017
Dichloroacetic Acid	1.12 µg/L No EPA limit set	1/19	SYR4	2012–2019
Nitrite	24 µg/L 2.4% of the EPA limit 1000 µg/L	1/6	SYR4	2014–2017
Selenium	1 µg/L 2% of the EPA limit 50 µg/L	1/6	SYR4	2014–2017
Toluene	2.15 µg/L 0.2% of the EPA limit 1000 µg/L	1/12	SYR4	2013–2019

80 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-PF3ONSAdonaAtrazineBhc-GammaBenzeneBeryllium, TotalBromoformChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDibromoacetic AcidDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

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Frequently asked questions about Platteville Waterworks

Is Platteville Waterworks tap water safe to drink?

EPA monitoring detected 24 contaminants in Platteville 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 Platteville Waterworks's water?

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

How many people does Platteville Waterworks serve?

Platteville Waterworks reports serving 12,268 people in Wisconsin, per its EPA record.

Has Platteville Waterworks had any water quality violations?

The EPA has 110 violations on file for Platteville Waterworks, of which 0 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.