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Tap water quality report

Cudahy Waterworks

EPA monitoring tested this supplier for 108 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
19
detected
18,659
people served
0
health-based violations
Wisconsin rankingsLead in WisconsinPFAS in Wisconsin
Water source
Surface water
Ownership
Local government
Counties served
Milwaukee

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.

0
health-based violations
60
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2002-10-01 → 2002-12-31
MR Monitoring Resolved 2002-10-01 → 2002-12-31
MR Monitoring Resolved 2002-10-01 → 2002-12-31
Other Monitoring Resolved 2002-07-01
Other Monitoring Resolved 2002-07-01
MR Monitoring Resolved 2002-07-01 → 2002-09-30
MR Monitoring Resolved 2002-07-01 → 2002-09-30
MR Monitoring Resolved 2002-07-01 → 2002-09-30
MR Monitoring Resolved 2002-07-01 → 2002-09-30
MR Monitoring Resolved 2002-07-01 → 2002-09-30

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Fluoride
1078 µg/L 27%
of the EPA limit 4000 µg/L
worst single sample: 1140 µg/L
103/198 SYR4 2012–2019
Bromodichloromethane
11.8 µg/L
No EPA limit set
worst single sample: 16 µg/L
65/65 SYR4 2012–2019
Chloroform
14.8 µg/L
No EPA limit set
worst single sample: 22 µg/L
65/65 SYR4 2012–2019
Dibromochloromethane
9.1 µg/L
No EPA limit set
worst single sample: 9.5 µg/L
65/65 SYR4 2012–2019
Lead
14 µg/L 93%
of the EPA limit 15 µg/L
worst single sample: 16 µg/L
60/60 SYR4 2014–2017
Copper
200 µg/L 15%
of the EPA limit 1300 µg/L
worst single sample: 220 µg/L
59/60 SYR4 2014–2017
TTHM
35.56 µg/L 44%
of the EPA limit 80 µg/L
worst single sample: 46.12 µg/L
57/57 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
11.24 µg/L 19%
of the EPA limit 60 µg/L
worst single sample: 13.5 µg/L
57/57 SYR4 2012–2019
Trichloroacetic Acid
3.42 µg/L
No EPA limit set
worst single sample: 5.7 µg/L
57/57 SYR4 2012–2019
Dibromoacetic Acid
1.975 µg/L
No EPA limit set
worst single sample: 2.5 µg/L
56/57 SYR4 2012–2019
Dichloroacetic Acid
5.04 µg/L
No EPA limit set
worst single sample: 5.5 µg/L
53/57 SYR4 2012–2019
Bromoform
1.86 µg/L
No EPA limit set
worst single sample: 2.1 µg/L
45/65 SYR4 2012–2019
Monobromoacetic Acid
1.76 µg/L
No EPA limit set
worst single sample: 1.9 µg/L
25/57 SYR4 2012–2019
Lead
0.0130 mg/L 87%
of the EPA limit 0.0150 mg/L
 20/20 LCR 2025
Nitrate-Nitrite
470 µg/L 4.7%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Barium
21 µg/L 1.1%
of the EPA limit 2000 µg/L
 8/8 SYR4 2012–2019
Monochloroacetic Acid
2.74 µg/L
No EPA limit set
worst single sample: 2.8 µg/L
4/57 SYR4 2012–2019
Arsenic
1.29 µg/L 13%
of the EPA limit 10 µg/L
worst single sample: 1.3 µg/L
2/8 SYR4 2012–2019
Combined Radium (-226 And -228)
1.45 pCi/L 29%
of the EPA limit 5 pCi/L
 1/1 SYR4 2014
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-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Frequently asked questions about Cudahy Waterworks

Is Cudahy Waterworks tap water safe to drink?

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

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

How many people does Cudahy Waterworks serve?

Cudahy Waterworks reports serving 18,659 people in Wisconsin, per its EPA record.

Has Cudahy Waterworks had any water quality violations?

The EPA has 60 violations on file for Cudahy 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.