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 |
|---|---|---|---|
| Fluoride | 1500 µg/L 38% of the EPA limit 4000 µg/L Highest in the city: SLOPE N SHORE CLUB · 180 people · 2018 | 2/3 | SYR4 |
| Nitrate | 1300 µg/L 13% of the EPA limit 10000 µg/L Highest in the city: SEASONS AT LAKE SUNAPEE · 153 people · 2019 | 2/3 | SYR4 |
| Nitrate-Nitrite | 775 µg/L 7.8% of the EPA limit 10000 µg/L Highest in the city: SLOPE N SHORE CLUB · 180 people · 2019 | 1/3 | SYR4 |
| Copper | 505.5 µg/L 39% of the EPA limit 1300 µg/L Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2019 | 3/3 | SYR4 |
| Barium | 4.975 µg/L 0.2% of the EPA limit 2000 µg/L Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2019
Highest in the city: 121.85 µg/L — SEASONS AT LAKE SUNAPEE · 153 people · 2017 | 2/3 | SYR4 |
| Nitrite | 72 µg/L 7.2% of the EPA limit 1000 µg/L Highest in the city: SLOPE N SHORE CLUB · 180 people · 2019 | 1/3 | SYR4 |
| TTHM | 36.938 µg/L 46% of the EPA limit 80 µg/L Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2019 | 1/3 | SYR4 |
| Chloroform | 30.5 µg/L No EPA limit set Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2019 | 1/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 10.57 µg/L 18% of the EPA limit 60 µg/L Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2019 | 1/3 | SYR4 |
| Lead | 9.55 µg/L 64% of the EPA limit 15 µg/L Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 8.445 µg/L No EPA limit set Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2019 | 1/3 | SYR4 |
| Bromodichloromethane | 5.465 µg/L No EPA limit set Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2019 | 1/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.1 pCi/L 7.3% of the EPA limit 15 pCi/L Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2016
Highest in the city: 5.25 pCi/L — SLOPE N SHORE CLUB · 180 people · 2019 | 2/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 5.1 µg/L 85% of the EPA limit 6 µg/L Highest in the city: SLOPE N SHORE CLUB · 180 people · 2019 | 1/3 | SYR4 |
| Chromium | 5 µg/L 5% of the EPA limit 100 µg/L Highest in the city: SEASONS AT LAKE SUNAPEE · 153 people · 2017 | 1/3 | SYR4 |
| Combined Uranium | 0.4000 µg/L 1.3% of the EPA limit 30 µg/L Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2016
Highest in the city: 4.8 µg/L — SLOPE N SHORE CLUB · 180 people · 2019 | 2/3 | SYR4 |
| Dichloroacetic Acid | 3.685 µg/L No EPA limit set Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2019 | 1/3 | SYR4 |
| Arsenic | 2.49 µg/L 25% of the EPA limit 10 µg/L Highest in the city: SLOPE N SHORE CLUB · 180 people · 2018 | 1/3 | SYR4 |
| Trichloroethylene | 1.1 µg/L 22% of the EPA limit 5 µg/L Highest in the city: SLOPE N SHORE CLUB · 180 people · 2019 | 1/3 | SYR4 |
| Dibromochloromethane | 0.9300 µg/L No EPA limit set Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 0.5000 pCi/L 10% of the EPA limit 5 pCi/L Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2016
Highest in the city: 0.5700 pCi/L — SLOPE N SHORE CLUB · 180 people · 2016 | 2/3 | SYR4 |
| Lead | 0.0300 mg/L 200% above the EPA limit of 0.0150 mg/L Main supplier: NEW LONDON SPRINGFIELD WATER · 3,250 people · 2010 | 1/3 | 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 New London
| Supplier | Population served |
|---|---|
| NEW LONDON SPRINGFIELD WATER | 3,250 |
| SLOPE N SHORE CLUB | 180 |
| SEASONS AT LAKE SUNAPEE | 153 |
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?
3 public water suppliers report drinking-water monitoring for New London, New Hampshire 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 Fluoride, Nitrate, Nitrate-Nitrite, Copper, 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.