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.
1
health-based violations
39
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 1999-09-01 → 1999-09-30 |
| MR | Monitoring | Resolved | 2015-01-01 → 2015-03-31 |
| MR | Monitoring | Resolved | 2015-01-01 → 2015-03-31 |
| MR | Monitoring | Resolved | 2015-01-01 → 2015-03-31 |
| MR | Monitoring | Resolved | 2015-01-01 → 2015-03-31 |
| MR | Monitoring | Resolved | 2015-01-01 → 2015-03-31 |
| MR | Monitoring | Resolved | 2015-01-01 → 2015-03-31 |
| MR | Monitoring | Resolved | 2015-01-01 → 2015-03-31 |
| MR | Monitoring | Resolved | 2015-01-01 → 2015-03-31 |
| MR | Monitoring | Resolved | 2015-01-01 → 2015-03-31 |
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 |
|---|---|---|---|---|
| Bromodichloromethane | 4.79 µg/L No EPA limit set
worst single sample: 6.9 µg/L | 263/263 | SYR4 | 2012–2019 |
| Dibromochloromethane | 3.1 µg/L No EPA limit set
worst single sample: 5 µg/L | 263/263 | SYR4 | 2012–2019 |
| Chloroform | 5.76 µg/L No EPA limit set
worst single sample: 8.2 µg/L | 258/263 | SYR4 | 2012–2019 |
| TTHM | 13.49 µg/L 17% of the EPA limit 80 µg/L
worst single sample: 20.9 µg/L | 243/243 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 4.175 µg/L 7% of the EPA limit 60 µg/L
worst single sample: 6.1 µg/L | 186/249 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 2.385 µg/L No EPA limit set
worst single sample: 2.9 µg/L | 184/249 | SYR4 | 2012–2019 |
| Bromoform | 0.6000 µg/L No EPA limit set
worst single sample: 0.9000 µg/L | 121/263 | SYR4 | 2012–2019 |
| Copper | 57.4 µg/L 4.4% of the EPA limit 1300 µg/L
worst single sample: 130 µg/L | 120/133 | SYR4 | 2012–2017 |
| Fluoride | 1042 µg/L 26% of the EPA limit 4000 µg/L
worst single sample: 1100 µg/L | 119/219 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 1.8 µg/L No EPA limit set
worst single sample: 2.7 µg/L | 100/249 | SYR4 | 2012–2019 |
| Lead | 11.55 µg/L 77% of the EPA limit 15 µg/L
worst single sample: 130 µg/L | 90/125 | SYR4 | 2012–2017 |
| Bromate | 7.19 µg/L 72% of the EPA limit 10 µg/L
worst single sample: 8.5 µg/L | 83/319 | SYR4 | 2012–2019 |
| Nitrate | 310 µg/L 3.1% of the EPA limit 10000 µg/L
worst single sample: 400 µg/L | 76/76 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 0.7600 µg/L No EPA limit set
worst single sample: 1 µg/L | 29/249 | SYR4 | 2012–2019 |
| Barium | 22 µg/L 1.1% of the EPA limit 2000 µg/L
worst single sample: 23 µg/L | 28/28 | SYR4 | 2012–2017 |
| Nitrate-Nitrite | 309.5 µg/L 3.1% of the EPA limit 10000 µg/L
worst single sample: 310 µg/L | 22/22 | SYR4 | 2012–2017 |
| Lead | 0.0053 mg/L 35% of the EPA limit 0.0150 mg/L | 17/17 | LCR | 2023 |
| Combined Radium (-226 And -228) | 1.4925 pCi/L 30% of the EPA limit 5 pCi/L
worst single sample: 1.51 pCi/L | 6/6 | SYR4 | 2015 |
| Gross Alpha, Excl. Radon And U | 3.6 pCi/L 24% of the EPA limit 15 pCi/L | 6/6 | SYR4 | 2015 |
| Gross Beta Particle Activity | 6.075 pCi/L No EPA limit set
worst single sample: 6.6 pCi/L | 6/6 | SYR4 | 2015 |
| Atrazine | 0.0300 µg/L 1% of the EPA limit 3 µg/L | 4/22 | SYR4 | 2012–2017 |
| Arsenic | 0.5000 µg/L 5% of the EPA limit 10 µg/L | 3/20 | SYR4 | 2012–2017 |
| Antimony, Total | 0.1595 µg/L 2.7% of the EPA limit 6 µg/L
worst single sample: 0.1600 µg/L | 2/20 | SYR4 | 2012–2017 |
| Chromium | 0.5000 µg/L 0.5% of the EPA limit 100 µg/L | 2/20 | SYR4 | 2012–2017 |
| Monochloroacetic Acid | 2.7 µg/L No EPA limit set | 1/249 | SYR4 | 2012–2019 |
| Xylenes, Total | 0.1000 µg/L 0% of the EPA limit 10000 µg/L | 1/20 | SYR4 | 2012–2019 |
87 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-PF3ONSAdonaBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Milwaukee Waterworks
Is Milwaukee Waterworks tap water safe to drink?
EPA monitoring detected 26 contaminants in Milwaukee 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 Milwaukee Waterworks's water?
EPA monitoring detected Bromodichloromethane, Dibromochloromethane, Chloroform, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.
How many people does Milwaukee Waterworks serve?
Milwaukee Waterworks reports serving 626,000 people in Wisconsin, per its EPA record.
Has Milwaukee Waterworks had any water quality violations?
The EPA has 39 violations on file for Milwaukee Waterworks, of which 1 is 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.