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Jackson Waterworks

EPA monitoring tested this supplier for 77 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

77
contaminants tested
18
detected
7,844
people served
3
health-based violations
Wisconsin rankingsLead in WisconsinPFAS in Wisconsin
Water source
Ground water
Ownership
Local government
Counties served
Washington

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.

3
health-based violations
17
violations on file
1
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
Other Monitoring Unaddressed 2024-10-17
MR Monitoring Resolved 2023-06-01
MR Monitoring Resolved 2023-06-01
MR Monitoring Resolved 2023-06-01
MR Monitoring Resolved 2023-06-01
Other Monitoring Resolved 2005-07-01
MR Monitoring Resolved 2001-11-01 → 2001-11-30

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
730.5 µg/L 56%
of the EPA limit 1300 µg/L
worst single sample: 790 µg/L
40/40 SYR4 2014–2017
Lead
3.22 µg/L 21%
of the EPA limit 15 µg/L
worst single sample: 16 µg/L
39/40 SYR4 2014–2017
Nitrate
3355 µg/L 34%
of the EPA limit 10000 µg/L
worst single sample: 3400 µg/L
24/60 SYR4 2012–2019
Bromodichloromethane
5.78 µg/L
No EPA limit set
worst single sample: 6.2 µg/L
15/15 SYR4 2013–2019
Chloroform
17.3 µg/L
No EPA limit set
worst single sample: 18 µg/L
15/15 SYR4 2013–2019
Dibromochloromethane
1.8 µg/L
No EPA limit set
 15/15 SYR4 2013–2019
TTHM
24.6 µg/L 31%
of the EPA limit 80 µg/L
worst single sample: 26 µg/L
15/15 SYR4 2013–2019
Lead
0.0024 mg/L 16%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2024
Arsenic
5.78 µg/L 58%
of the EPA limit 10 µg/L
worst single sample: 6.5 µg/L
10/10 SYR4 2014–2017
Barium
97 µg/L 4.9%
of the EPA limit 2000 µg/L
 10/10 SYR4 2014–2017
Combined Radium (-226 And -228)
1.4775 pCi/L 30%
of the EPA limit 5 pCi/L
worst single sample: 1.5 pCi/L
10/10 SYR4 2012–2014
Dichloroacetic Acid
5.555 µg/L
No EPA limit set
worst single sample: 5.6 µg/L
10/10 SYR4 2013–2019
Fluoride
230 µg/L 5.8%
of the EPA limit 4000 µg/L
 10/10 SYR4 2014–2017
Total Haloacetic Acids (HAA5)
12.3995 µg/L 21%
of the EPA limit 60 µg/L
worst single sample: 12.53 µg/L
10/10 SYR4 2013–2019
Trichloroacetic Acid
6.255 µg/L
No EPA limit set
worst single sample: 6.3 µg/L
10/10 SYR4 2013–2019
Dibromoacetic Acid
0.4325 µg/L
No EPA limit set
worst single sample: 0.4400 µg/L
6/10 SYR4 2013–2019
Nitrate-Nitrite
2760 µg/L 28%
of the EPA limit 10000 µg/L
worst single sample: 2800 µg/L
5/10 SYR4 2014–2017
Monobromoacetic Acid
0.4400 µg/L
No EPA limit set
 1/10 SYR4 2013–2019
59 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about Jackson Waterworks

Is Jackson Waterworks tap water safe to drink?

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

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

How many people does Jackson Waterworks serve?

Jackson Waterworks reports serving 7,844 people in Wisconsin, per its EPA record.

Has Jackson Waterworks had any water quality violations?

The EPA has 17 violations on file for Jackson Waterworks, of which 3 are health-based (a contaminant limit or required treatment was breached) and 1 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.