What was found in Hartland'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 | 5600 µg/L 56% of the EPA limit 10000 µg/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019 | 7/7 | SYR4 |
| Nitrate-Nitrite | 5535 µg/L 55% of the EPA limit 10000 µg/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019 | 3/7 | SYR4 |
| Copper | 1825 µg/L 140% of the EPA limit, at the 95th percentile of samples — 1300 µg/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2017 | 7/7 | SYR4 |
| Fluoride | 1090 µg/L 27% of the EPA limit 4000 µg/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019 | 6/7 | SYR4 |
| Barium | 88.8 µg/L 4.4% of the EPA limit 2000 µg/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019
Highest in the city: 100 µg/L — COUNTRY AIRE APARTMENTS 3 · 80 people · 2018 | 7/7 | SYR4 |
| Nitrite | 20 µg/L 2% of the EPA limit 1000 µg/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019 | 1/7 | SYR4 |
| Lead | 18.75 µg/L 125% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2017 | 7/7 | SYR4 |
| Arsenic | 9.5 µg/L 95% of the EPA limit 10 µg/L Highest in the city: COUNTRY AIRE APARTMENTS 2 · 90 people · 2018 | 5/7 | SYR4 |
| Trichloroethylene | 7.26 µg/L 145% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019 | 1/7 | SYR4 |
| TTHM | 6.68 µg/L 8.4% of the EPA limit 80 µg/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019 | 1/7 | SYR4 |
| Dibromochloromethane | 4.175 µg/L No EPA limit set Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019 | 1/7 | SYR4 |
| Bromoform | 3.785 µg/L No EPA limit set Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019 | 1/7 | SYR4 |
| Total Haloacetic Acids (HAA5) | 2.082 µg/L 3.5% of the EPA limit 60 µg/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019 | 1/7 | SYR4 |
| Bromodichloromethane | 1.95 µg/L No EPA limit set Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019 | 1/7 | SYR4 |
| Dibromoacetic Acid | 1.876 µg/L No EPA limit set Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019 | 1/7 | SYR4 |
| Combined Radium (-226 And -228) | 1.86 pCi/L 37% of the EPA limit 5 pCi/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2014 | 7/7 | SYR4 |
| Chromium | 1.38 µg/L 1.4% of the EPA limit 100 µg/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019 | 1/7 | SYR4 |
| Chloroform | 1 µg/L No EPA limit set Highest in the city: COUNTRY AIRE APARTMENTS 3 · 80 people · 2012 | 1/7 | SYR4 |
| Dichloroacetic Acid | 0.8270 µg/L No EPA limit set Main supplier: HARTLAND WATERWORKS · 9,212 people · 2019 | 1/7 | SYR4 |
| Combined Uranium | 0.8260 µg/L 2.8% of the EPA limit 30 µg/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2014 | 1/7 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.7390 pCi/L 4.9% of the EPA limit 15 pCi/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2014 | 1/7 | SYR4 |
| Cadmium | 0.2700 µg/L 5.4% of the EPA limit 5 µg/L Highest in the city: COUNTRY AIRE CONDOS 4887 · 40 people · 2018 | 1/7 | SYR4 |
| Lead | 0.0042 mg/L 28% of the EPA limit 0.0150 mg/L Main supplier: HARTLAND WATERWORKS · 9,212 people · 2025 | 7/7 | 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 Hartland
| Supplier | Population served |
|---|---|
| HARTLAND WATERWORKS | 9,212 |
| COUNTRY AIRE APARTMENTS 2 | 90 |
| COUNTRY AIRE APARTMENTS 3 | 80 |
| COUNTRY AIRE CONDOS 4821 | 40 |
| COUNTRY AIRE CONDOS 4835 | 40 |
| COUNTRY AIRE CONDOS 4887 | 40 |
| COUNTRY AIRE CONDOS 4875 | 40 |
Frequently asked questions about Hartland tap water
Is Hartland tap water safe to drink?
EPA testing detected 23 contaminants in the water serving Hartland. 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 Hartland?
7 public water suppliers report drinking-water monitoring for Hartland, Wisconsin to the EPA. Each is listed above with its population served.
What contaminants are in Hartland's water?
The contaminants EPA monitoring detected in Hartland 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.