What was found in East Hampton'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 | 710 µg/L 7.1% of the EPA limit 10000 µg/L Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 10065 µg/L — EDGEMERE CONDOMINIUM ASSN., INC. · 540 people · 2019 | 12/13 | SYR4 |
| Nitrate-Nitrite | 634 µg/L 6.3% of the EPA limit 10000 µg/L Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 6057 µg/L — EDGEMERE CONDOMINIUM ASSN., INC. · 540 people · 2019 | 12/13 | SYR4 |
| Copper | 212.8 µg/L 16% of the EPA limit 1300 µg/L Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 791.5 µg/L — EAST HAMPTON WPCA - ROYAL OAKS SYSTEM · 328 people · 2019 | 13/13 | SYR4 |
| Nitrite | 730 µg/L 73% of the EPA limit 1000 µg/L Highest in the city: EDGEMERE CONDOMINIUM ASSN., INC. · 540 people · 2019 | 4/13 | SYR4 |
| Fluoride | 170 µg/L 4.3% of the EPA limit 4000 µg/L Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 482 µg/L — CTWC - WESTCHESTER EAST · 153 people · 2019 | 10/13 | SYR4 |
| Total Haloacetic Acids (HAA5) | 5.785 µg/L 9.6% of the EPA limit 60 µg/L Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 66.9 µg/L — WESTSIDE MANOR · 30 people · 2019 | 9/13 | SYR4 |
| Barium | 16.4 µg/L 0.8% of the EPA limit 2000 µg/L Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 60.28 µg/L — BELLWOOD COURT · 31 people · 2017 | 13/13 | SYR4 |
| Dichloroacetic Acid | 2.905 µg/L No EPA limit set Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 48.175 µg/L — WESTSIDE MANOR · 30 people · 2019 | 7/13 | SYR4 |
| TTHM | 14.045 µg/L 18% of the EPA limit 80 µg/L Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 41.475 µg/L — WESTSIDE MANOR · 30 people · 2019 | 9/13 | SYR4 |
| Chloroform | 2.495 µg/L No EPA limit set Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 39.954 µg/L — WESTSIDE MANOR · 30 people · 2019 | 9/13 | SYR4 |
| Lead | 2 µg/L 13% of the EPA limit 15 µg/L Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 38.6 µg/L — CHATHAM APARTMENTS · 40 people · 2018 | 12/13 | SYR4 |
| Gross Beta Particle Activity | 31.13 pCi/L No EPA limit set Highest in the city: CTWC - BAKER HILL DIVISION · 203 people · 2019 | 2/13 | SYR4 |
| Trichloroacetic Acid | 3.1 µg/L No EPA limit set Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 24.1369 µg/L — WESTSIDE MANOR · 30 people · 2019 | 7/13 | SYR4 |
| Monobromoacetic Acid | 13.945 µg/L No EPA limit set Highest in the city: WESTSIDE MANOR · 30 people · 2019 | 2/13 | SYR4 |
| Cadmium | 12 µg/L 240% of the EPA limit, at the 95th percentile of samples — 5 µg/L Highest in the city: EDGEMERE CONDOMINIUM ASSN., INC. · 540 people · 2018 | 2/13 | SYR4 |
| Combined Uranium | 9.402 µg/L 31% of the EPA limit 30 µg/L Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 11.81 µg/L — CTWC - WESTCHESTER EAST · 153 people · 2017 | 4/13 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.692 pCi/L 31% of the EPA limit 15 pCi/L Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 8.03375 pCi/L — EAST HAMPTON WPCA - ROYAL OAKS SYSTEM · 328 people · 2019 | 8/13 | SYR4 |
| Dibromochloromethane | 1.98 µg/L No EPA limit set Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 7.195 µg/L — MALLARD COVE CONDOMINIUM ASSN. · 177 people · 2018 | 9/13 | SYR4 |
| Bromodichloromethane | 2.35 µg/L No EPA limit set Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 6.6 µg/L — CTWC - BAKER HILL DIVISION · 203 people · 2019 | 9/13 | SYR4 |
| Dibromoacetic Acid | 0.6000 µg/L No EPA limit set Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 5.3 µg/L — WESTSIDE MANOR · 30 people · 2019 | 5/13 | SYR4 |
| Monochloroacetic Acid | 4.857 µg/L No EPA limit set Highest in the city: WESTSIDE MANOR · 30 people · 2019 | 2/13 | SYR4 |
| Bromoform | 0.6520 µg/L No EPA limit set Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019
Highest in the city: 4.56 µg/L — WESTSIDE MANOR · 30 people · 2019 | 7/13 | SYR4 |
| 1,1-Dichloroethylene | 4.2 µg/L 60% of the EPA limit 7 µg/L Highest in the city: EAST HAMPTON WPCA - VILLAGE CENTER · 366 people · 2019 | 1/13 | SYR4 |
| Combined Radium (-226 And -228) | 3.1325 pCi/L 63% of the EPA limit 5 pCi/L Highest in the city: EAST HAMPTON WPCA - ROYAL OAKS SYSTEM · 328 people · 2019 | 9/13 | SYR4 |
| Chromium | 1.1 µg/L 1.1% of the EPA limit 100 µg/L Highest in the city: BELLWOOD COURT · 31 people · 2017 | 3/13 | SYR4 |
| Ethylbenzene | 0.9000 µg/L 0.1% of the EPA limit 700 µg/L Highest in the city: CTWC - WESTCHESTER EAST · 153 people · 2019 | 1/13 | SYR4 |
| Toluene | 0.5900 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: CTWC - BAKER HILL DIVISION · 203 people · 2019 | 1/13 | SYR4 |
| Beryllium, Total | 0.2000 µg/L 5% of the EPA limit 4 µg/L Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2019 | 1/13 | SYR4 |
| Asbestos | 0.1600 MFL 2.3% of the EPA limit 7 MFL Highest in the city: COBALT LODGE HEALTHCARE & REHAB CENTER · 130 people · 2012 | 1/13 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CTWC - SPICE HILL DIVISION · 712 people · 2025
Highest in the city: 0.0149 mg/L — COBALT LODGE HEALTHCARE & REHAB CENTER · 130 people · 2023 | 13/13 | 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 East Hampton
| Supplier | Population served |
|---|---|
| CTWC - SPICE HILL DIVISION | 712 |
| EDGEMERE CONDOMINIUM ASSN., INC. | 540 |
| EAST HAMPTON WPCA - VILLAGE CENTER | 366 |
| EAST HAMPTON WPCA - ROYAL OAKS SYSTEM | 328 |
| CTWC - BAKER HILL DIVISION | 203 |
| AQUARION-EAST HAMPTON | 189 |
| MALLARD COVE CONDOMINIUM ASSN. | 177 |
| CTWC - WESTCHESTER EAST | 153 |
| COBALT LODGE HEALTHCARE & REHAB CENTER | 130 |
| CHATHAM ACRES ELDERLY HOUSING | 50 |
| CHATHAM APARTMENTS | 40 |
| BELLWOOD COURT | 31 |
| WESTSIDE MANOR | 30 |
Frequently asked questions about East Hampton tap water
Is East Hampton tap water safe to drink?
EPA testing detected 30 contaminants in the water serving East Hampton. 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 East Hampton?
13 public water suppliers report drinking-water monitoring for East Hampton, Connecticut to the EPA. Each is listed above with its population served.
What contaminants are in East Hampton's water?
The contaminants EPA monitoring detected in East Hampton include Nitrate, Nitrate-Nitrite, Copper, Nitrite, Fluoride. 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.