What was found in Lisbon's water
The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 4500 µg/L 45% of the EPA limit 10000 µg/L | 6/6 | SYR4 |
| Nitrate-Nitrite | 4500 µg/L 45% of the EPA limit 10000 µg/L | 6/6 | SYR4 |
| Fluoride | 1000 µg/L 25% of the EPA limit 4000 µg/L | 1/6 | SYR4 |
| Nitrite | 860 µg/L 86% of the EPA limit 1000 µg/L | 1/6 | SYR4 |
| Copper | 710 µg/L 55% of the EPA limit 1300 µg/L | 6/6 | SYR4 |
| TTHM | 240.89 µg/L 301% of the EPA limit, in the worst sample — 80 µg/L | 3/6 | SYR4 |
| Total Haloacetic Acids (HAA5) | 98 µg/L 163% of the EPA limit, in the worst sample — 60 µg/L | 3/6 | SYR4 |
| Chloroform | 86.18 µg/L No EPA limit set | 3/6 | SYR4 |
| Dichloroacetic Acid | 48 µg/L No EPA limit set | 2/6 | SYR4 |
| Trichloroacetic Acid | 44 µg/L No EPA limit set | 2/6 | SYR4 |
| Lead | 39 µg/L 260% of the EPA limit, in the worst sample — 15 µg/L | 6/6 | SYR4 |
| Barium | 29 µg/L 1.5% of the EPA limit 2000 µg/L | 6/6 | SYR4 |
| Bromodichloromethane | 8.7 µg/L No EPA limit set | 3/6 | SYR4 |
| Dibromochloromethane | 4.6 µg/L No EPA limit set | 3/6 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.39 pCi/L 29% of the EPA limit 15 pCi/L | 4/6 | SYR4 |
| Monochloroacetic Acid | 4.1 µg/L No EPA limit set | 2/6 | SYR4 |
| Gross Beta Particle Activity | 3.74 pCi/L No EPA limit set | 1/6 | SYR4 |
| Selenium | 2.6 µg/L 5.2% of the EPA limit 50 µg/L | 1/6 | SYR4 |
| Combined Radium (-226 And -228) | 2 pCi/L 40% of the EPA limit 5 pCi/L | 5/6 | SYR4 |
| Monobromoacetic Acid | 2 µg/L No EPA limit set | 1/6 | SYR4 |
| Dibromoacetic Acid | 1.7 µg/L No EPA limit set | 2/6 | SYR4 |
| Chromium | 1 µg/L 1% of the EPA limit 100 µg/L | 1/6 | SYR4 |
| Bromoform | 0.6200 µg/L No EPA limit set | 2/6 | SYR4 |
| 2,4-D | 0.1650 µg/L 0.2% of the EPA limit 70 µg/L | 1/6 | SYR4 |
| PFOS | 0.0162 µg/L No EPA limit set | 1/6 | UCMR-5 |
| PFHXS | 0.0125 µg/L No EPA limit set | 1/6 | UCMR-5 |
| Pfba | 0.0121 µg/L No EPA limit set | 1/6 | UCMR-5 |
| PFOA | 0.0067 µg/L No EPA limit set | 1/6 | UCMR-5 |
| PFBS | 0.0060 µg/L No EPA limit set | 1/6 | UCMR-5 |
| Pfpea | 0.0039 µg/L No EPA limit set | 1/6 | UCMR-5 |
| Lead | 0.0028 mg/L 19% of the EPA limit 0.0150 mg/L | 6/6 | LCR |
Water suppliers serving Lisbon
| Supplier | Population served |
|---|---|
| NORWICH PUBLIC UTILITIES | 36,163 |
| JEWETT CITY WATER COMPANY | 6,840 |
| LISBON MOBILE HOMES | 155 |
| JEWETT CITY WATER CO-HILL-N-DALE | 146 |
| ROUND HILL LLC - WELL# 1&2 | 72 |
| TUNNEL HILL MOBILE HOME PARK | 40 |
Frequently asked questions about Lisbon tap water
Is Lisbon tap water safe to drink?
EPA testing detected 31 contaminants in the water serving Lisbon. 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 Lisbon?
6 public water suppliers report drinking-water monitoring for Lisbon, Connecticut to the EPA. Each is listed above with its population served.
What contaminants are in Lisbon's water?
The contaminants EPA monitoring detected in Lisbon include Nitrate, Nitrate-Nitrite, Fluoride, Nitrite, Copper. The full list, with the highest level found 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.