What was found in Manitowoc's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 1600 µg/L 16% of the EPA limit 10000 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 1568 µg/L 16% of the EPA limit 10000 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2017 | 3/3 | SYR4 |
| Copper | 370 µg/L 28% of the EPA limit 1300 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019
Highest in the city: 1372.5 µg/L — CHIARA CONVENT · 40 people · 2019 | 3/3 | SYR4 |
| Fluoride | 738.85 µg/L 18% of the EPA limit 4000 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 3/3 | SYR4 |
| Barium | 69.23 µg/L 3.5% of the EPA limit 2000 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2017
Highest in the city: 140 µg/L — HOLY FAMILY CONVENT · 195 people · 2018 | 2/3 | SYR4 |
| TTHM | 47.164 µg/L 59% of the EPA limit 80 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 32.4 µg/L 54% of the EPA limit 60 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Chloroform | 28.895 µg/L No EPA limit set Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Monochloroacetic Acid | 20.72 µg/L No EPA limit set Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Lead | 16 µg/L 107% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 14.215 µg/L No EPA limit set Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Bromodichloromethane | 13.7 µg/L No EPA limit set Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Dichloroacetic Acid | 12.35 µg/L No EPA limit set Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Dibromochloromethane | 5.958 µg/L No EPA limit set Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Monobromoacetic Acid | 3.384 µg/L No EPA limit set Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 3.1156 pCi/L 62% of the EPA limit 5 pCi/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2017 | 2/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.53 pCi/L 17% of the EPA limit 15 pCi/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2014 | 2/3 | SYR4 |
| Bromoform | 2.05 µg/L No EPA limit set Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Arsenic | 1.0568 µg/L 11% of the EPA limit 10 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2017
Highest in the city: 1.87 µg/L — CHIARA CONVENT · 40 people · 2018 | 2/3 | SYR4 |
| Dibromoacetic Acid | 1.8275 µg/L No EPA limit set Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Dichloromethane | 1.4725 µg/L 29% of the EPA limit 5 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Tetrachloroethylene | 1.444 µg/L 29% of the EPA limit 5 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Xylenes, Total | 1.3 µg/L 0% of the EPA limit 10000 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Chromium | 0.8346 µg/L 0.8% of the EPA limit 100 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2017 | 3/3 | SYR4 |
| Trichloroethylene | 0.7409 µg/L 15% of the EPA limit 5 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2019 | 1/3 | SYR4 |
| Thallium, Total | 0.5620 µg/L 28% of the EPA limit 2 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2017 | 1/3 | SYR4 |
| Combined Uranium | 0.4590 µg/L 1.5% of the EPA limit 30 µg/L Highest in the city: HOLY FAMILY CONVENT · 195 people · 2018 | 1/3 | SYR4 |
| Cadmium | 0.1020 µg/L 2% of the EPA limit 5 µg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2017
Highest in the city: 0.1045 µg/L — CHIARA CONVENT · 40 people · 2018 | 2/3 | SYR4 |
| Mercury | 0.1000 µg/L 5% of the EPA limit 2 µg/L Highest in the city: CHIARA CONVENT · 40 people · 2018 | 1/3 | SYR4 |
| Lead | 0.0077 mg/L 51% of the EPA limit 0.0150 mg/L Main supplier: MANITOWOC WATERWORKS · 34,500 people · 2025 | 3/3 | LCR |
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 the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Manitowoc
| Supplier | Population served |
|---|---|
| MANITOWOC WATERWORKS | 34,500 |
| HOLY FAMILY CONVENT | 195 |
| CHIARA CONVENT | 40 |
Frequently asked questions about Manitowoc tap water
Is Manitowoc tap water safe to drink?
EPA testing detected 30 contaminants in the water serving Manitowoc. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Manitowoc?
3 public water suppliers report drinking-water monitoring for Manitowoc, Wisconsin to the EPA. Each is listed above with its population served.
What contaminants are in Manitowoc's water?
The contaminants EPA monitoring detected in Manitowoc include Nitrate, Nitrate-Nitrite, Copper, Fluoride, Barium. The full list, with the level at the main supplier and the data source, is in the table above.
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.