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Tap water quality report

Winter Waterworks

EPA monitoring tested this supplier for 74 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

74
contaminants tested
18
detected
344
people served
8
health-based violations
Wisconsin rankingsLead in WisconsinPFAS in Wisconsin
Water source
Ground water
Ownership
Local government
Counties served
Sawyer

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.

8
health-based violations
40
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2022-11-02
TT Health-based Resolved 2022-11-02
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MR Monitoring Resolved 2021-02-01
MR Monitoring Resolved 2021-02-01

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
2460 µg/L 25%
of the EPA limit 10000 µg/L
 16/32 SYR4 2012–2019
Lead
0.0052 mg/L 35%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2023
Copper
1199.8 µg/L 92%
of the EPA limit 1300 µg/L
worst single sample: 1600 µg/L
13/15 SYR4 2014–2017
Lead
724.75 µg/L 4832%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 1030 µg/L
7/15 SYR4 2014–2017
Barium
21.27 µg/L 1.1%
of the EPA limit 2000 µg/L
worst single sample: 22.2 µg/L
4/4 SYR4 2014–2017
Bromodichloromethane
3.168 µg/L
No EPA limit set
worst single sample: 3.38 µg/L
3/4 SYR4 2013–2019
Chloroform
2.7431 µg/L
No EPA limit set
worst single sample: 2.97 µg/L
3/4 SYR4 2013–2019
Dibromochloromethane
2.105 µg/L
No EPA limit set
worst single sample: 2.22 µg/L
3/4 SYR4 2013–2019
Monochloroacetic Acid
16.652 µg/L
No EPA limit set
worst single sample: 18.1 µg/L
3/4 SYR4 2013–2019
TTHM
8.6569 µg/L 11%
of the EPA limit 80 µg/L
worst single sample: 9.282 µg/L
3/4 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
17.4261 µg/L 29%
of the EPA limit 60 µg/L
worst single sample: 18.817 µg/L
3/4 SYR4 2013–2019
Combined Radium (-226 And -228)
0.7315 pCi/L 15%
of the EPA limit 5 pCi/L
worst single sample: 0.7600 pCi/L
2/2 SYR4 2017
Combined Uranium
0.5895 µg/L 2%
of the EPA limit 30 µg/L
worst single sample: 0.6200 µg/L
2/2 SYR4 2017
Fluoride
99.5 µg/L 2.5%
of the EPA limit 4000 µg/L
worst single sample: 100 µg/L
2/4 SYR4 2014–2017
Gross Alpha, Excl. Radon And U
2.815 pCi/L 19%
of the EPA limit 15 pCi/L
worst single sample: 2.89 pCi/L
2/2 SYR4 2017
Nitrate-Nitrite
2225.5 µg/L 22%
of the EPA limit 10000 µg/L
worst single sample: 2250 µg/L
2/4 SYR4 2014–2017
Dichloroacetic Acid
0.4290 µg/L
No EPA limit set
 1/4 SYR4 2013–2019
Trichloroacetic Acid
0.5830 µg/L
No EPA limit set
 1/4 SYR4 2013–2019
56 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDibromoacetic AcidDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about Winter Waterworks

Is Winter Waterworks tap water safe to drink?

EPA monitoring detected 18 contaminants in Winter 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 Winter Waterworks's water?

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

How many people does Winter Waterworks serve?

Winter Waterworks reports serving 344 people in Wisconsin, per its EPA record.

Has Winter Waterworks had any water quality violations?

The EPA has 40 violations on file for Winter Waterworks, of which 8 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.