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Tap water quality report

Shawano Waterworks

EPA monitoring tested this supplier for 73 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
18
detected
9,610
people served
8
health-based violations
Wisconsin rankingsLead in WisconsinPFAS in Wisconsin
Water source
Ground water
Ownership
Local government
Counties served
Shawano

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
26
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2012-06-01 → 2012-06-30
MCL Health-based Resolved 2012-06-01 → 2012-06-30
MCL Health-based Resolved 2012-06-01 → 2012-06-30
MCL Health-based Resolved 2012-06-01 → 2012-06-30
MCL Health-based Resolved 2012-06-01 → 2012-06-30
MCL Health-based Resolved 1993-02-01 → 1993-02-28
MCL Health-based Resolved 1993-02-01 → 1993-02-28
MCL Health-based Resolved 1993-02-01 → 1993-02-28
MR Monitoring Resolved 2020-01-01
MR Monitoring Resolved 2020-01-01

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
6700 µg/L 67%
of the EPA limit 10000 µg/L
worst single sample: 7000 µg/L
72/72 SYR4 2012–2019
Copper
210 µg/L 16%
of the EPA limit 1300 µg/L
worst single sample: 370 µg/L
61/61 SYR4 2013–2019
Lead
24.1 µg/L 161%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 85 µg/L
60/61 SYR4 2013–2019
Lead
0.0037 mg/L 25%
of the EPA limit 0.0150 mg/L
 18/18 LCR 2023
Bromodichloromethane
4.02 µg/L
No EPA limit set
worst single sample: 4.2 µg/L
13/15 SYR4 2013–2019
Chloroform
4.96 µg/L
No EPA limit set
worst single sample: 5.5 µg/L
13/15 SYR4 2013–2019
Dibromochloromethane
2.04 µg/L
No EPA limit set
worst single sample: 2.1 µg/L
13/15 SYR4 2013–2019
TTHM
9.064 µg/L 11%
of the EPA limit 80 µg/L
worst single sample: 10.81 µg/L
13/13 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
2.576 µg/L 4.3%
of the EPA limit 60 µg/L
worst single sample: 2.6 µg/L
9/9 SYR4 2013–2019
Barium
67.75 µg/L 3.4%
of the EPA limit 2000 µg/L
worst single sample: 80 µg/L
8/8 SYR4 2014–2017
Nitrate-Nitrite
5860 µg/L 59%
of the EPA limit 10000 µg/L
worst single sample: 6700 µg/L
8/8 SYR4 2014–2017
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
 4/8 SYR4 2014–2017
Combined Radium (-226 And -228)
2.1715 pCi/L 43%
of the EPA limit 5 pCi/L
worst single sample: 2.29 pCi/L
4/4 SYR4 2014
Dichloroacetic Acid
0.9510 µg/L
No EPA limit set
worst single sample: 0.9600 µg/L
4/9 SYR4 2013–2019
Dibromoacetic Acid
0.7470 µg/L
No EPA limit set
worst single sample: 0.7600 µg/L
3/9 SYR4 2013–2019
Trichloroacetic Acid
0.8700 µg/L
No EPA limit set
worst single sample: 0.9200 µg/L
3/9 SYR4 2013–2019
Chromium
1.185 µg/L 1.2%
of the EPA limit 100 µg/L
worst single sample: 1.2 µg/L
2/8 SYR4 2014–2017
Monobromoacetic Acid
0.3970 µg/L
No EPA limit set
worst single sample: 0.4000 µg/L
2/9 SYR4 2013–2019
55 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, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDinosebDiquatEndothallEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about Shawano Waterworks

Is Shawano Waterworks tap water safe to drink?

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

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

How many people does Shawano Waterworks serve?

Shawano Waterworks reports serving 9,610 people in Wisconsin, per its EPA record.

Has Shawano Waterworks had any water quality violations?

The EPA has 26 violations on file for Shawano 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.