What was found in New London'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 | 3800 µg/L 38% of the EPA limit 10000 µg/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019 | 3/4 | SYR4 |
| Nitrate-Nitrite | 3460 µg/L 35% of the EPA limit 10000 µg/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019 | 3/4 | SYR4 |
| Fluoride | 777.3 µg/L 19% of the EPA limit 4000 µg/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019
Highest in the city: 1050 µg/L — BOARDWALK MHC · 71 people · 2018 | 3/4 | SYR4 |
| Barium | 66.2 µg/L 3.3% of the EPA limit 2000 µg/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019
Highest in the city: 260 µg/L — OAKWOOD ESTATES MHP · 110 people · 2018 | 4/4 | SYR4 |
| Copper | 110 µg/L 8.5% of the EPA limit 1300 µg/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2017
Highest in the city: 168 µg/L — OAKWOOD ESTATES MHP · 110 people · 2018 | 3/4 | SYR4 |
| TTHM | 12.876 µg/L 16% of the EPA limit 80 µg/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019 | 1/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.198 pCi/L 28% of the EPA limit 15 pCi/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2017
Highest in the city: 12.1967 pCi/L — RAWHIDE YOUTH HOMES · 92 people · 2019 | 3/4 | SYR4 |
| Lead | 8.6 µg/L 57% of the EPA limit 15 µg/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2017
Highest in the city: 10.7 µg/L — OAKWOOD ESTATES MHP · 110 people · 2018 | 2/4 | SYR4 |
| Arsenic | 8 µg/L 80% of the EPA limit 10 µg/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019 | 2/4 | SYR4 |
| Combined Radium (-226 And -228) | 3.886 pCi/L 78% of the EPA limit 5 pCi/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2017
Highest in the city: 6.939 pCi/L — RAWHIDE YOUTH HOMES · 92 people · 2019 | 4/4 | SYR4 |
| Chromium | 5.8 µg/L 5.8% of the EPA limit 100 µg/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019 | 1/4 | SYR4 |
| Chloroform | 5.35 µg/L No EPA limit set Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019 | 1/4 | SYR4 |
| Bromodichloromethane | 4.08 µg/L No EPA limit set Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019 | 1/4 | SYR4 |
| Dibromochloromethane | 3.27 µg/L No EPA limit set Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019 | 1/4 | SYR4 |
| Combined Uranium | 0.6050 µg/L 2% of the EPA limit 30 µg/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019
Highest in the city: 2.2 µg/L — RAWHIDE YOUTH HOMES · 92 people · 2018 | 3/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.9865 µg/L 3.3% of the EPA limit 60 µg/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019 | 1/4 | SYR4 |
| Tetrachloroethylene | 1.765 µg/L 35% of the EPA limit 5 µg/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019 | 1/4 | SYR4 |
| Bromoform | 1.5 µg/L No EPA limit set Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019 | 1/4 | SYR4 |
| Dibromoacetic Acid | 0.7575 µg/L No EPA limit set Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019 | 1/4 | SYR4 |
| Dichloroacetic Acid | 0.6890 µg/L No EPA limit set Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2019 | 1/4 | SYR4 |
| Styrene | 0.1600 µg/L 0.2% of the EPA limit 100 µg/L Highest in the city: BOARDWALK MHC · 71 people · 2018 | 1/4 | SYR4 |
| Lead | 0.0130 mg/L 87% of the EPA limit 0.0150 mg/L Main supplier: NEW LONDON WATERWORKS · 7,187 people · 2020 | 4/4 | 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 New London
| Supplier | Population served |
|---|---|
| NEW LONDON WATERWORKS | 7,187 |
| OAKWOOD ESTATES MHP | 110 |
| RAWHIDE YOUTH HOMES | 92 |
| BOARDWALK MHC | 71 |
Frequently asked questions about New London tap water
Is New London tap water safe to drink?
EPA testing detected 22 contaminants in the water serving New London. 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 New London?
4 public water suppliers report drinking-water monitoring for New London, Wisconsin to the EPA. Each is listed above with its population served.
What contaminants are in New London's water?
The contaminants EPA monitoring detected in New London include Nitrate, Nitrate-Nitrite, Fluoride, Barium, Copper. 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.