What was found in Lebanon'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 | 2470 µg/L 25% of the EPA limit 10000 µg/L Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2019
Highest in the city: 4300 µg/L — CAREFREE HOMEOWNERS ASSOCIATION · 172 people · 2019 | 7/7 | SYR4 |
| Nitrate-Nitrite | 2625 µg/L 26% of the EPA limit 10000 µg/L Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2019
Highest in the city: 4160 µg/L — CAREFREE HOMEOWNERS ASSOCIATION · 172 people · 2019 | 7/7 | SYR4 |
| Fluoride | 992 µg/L 25% of the EPA limit 4000 µg/L Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2019 | 6/7 | SYR4 |
| Nitrite | 860 µg/L 86% of the EPA limit 1000 µg/L Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2019 | 1/7 | SYR4 |
| Copper | 107.5 µg/L 8.3% of the EPA limit 1300 µg/L Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2019
Highest in the city: 736.4 µg/L — CTWC - LEBANON ELDERLY DIV. · 67 people · 2019 | 7/7 | SYR4 |
| TTHM | 115.47 µg/L 144% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2019 | 5/7 | SYR4 |
| Barium | 11 µg/L 0.5% of the EPA limit 2000 µg/L Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2019
Highest in the city: 81.9 µg/L — AQUARION-LEBANON · 149 people · 2017 | 6/7 | SYR4 |
| Total Haloacetic Acids (HAA5) | 66.4 µg/L 111% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2019 | 5/7 | SYR4 |
| Chloroform | 50.5 µg/L No EPA limit set Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2019 | 5/7 | SYR4 |
| Lead | 17.6 µg/L 117% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2019 | 6/7 | SYR4 |
| Bromodichloromethane | 7.65 µg/L No EPA limit set Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2019
Highest in the city: 11.85 µg/L — AQUARION-LEBANON · 149 people · 2019 | 5/7 | SYR4 |
| Dichloroacetic Acid | 10.95 µg/L No EPA limit set Highest in the city: AQUARION-LEBANON · 149 people · 2019 | 4/7 | SYR4 |
| Trichloroacetic Acid | 7.65 µg/L No EPA limit set Highest in the city: AQUARION-LEBANON · 149 people · 2019 | 2/7 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.6365 pCi/L 44% of the EPA limit 15 pCi/L Highest in the city: CTWC - AMSTON LAKE DIVISION · 910 people · 2019 | 3/7 | SYR4 |
| Dibromochloromethane | 0.8725 µg/L No EPA limit set Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2019
Highest in the city: 5.865 µg/L — AQUARION-LEBANON · 149 people · 2019 | 5/7 | SYR4 |
| Combined Uranium | 3.305 µg/L 11% of the EPA limit 30 µg/L Highest in the city: HILLSIDE CONDOMINIUMS · 96 people · 2019 | 5/7 | SYR4 |
| Selenium | 2.6 µg/L 5.2% of the EPA limit 50 µg/L Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2019 | 2/7 | SYR4 |
| Dibromoacetic Acid | 2.53 µg/L No EPA limit set Highest in the city: CAREFREE HOMEOWNERS ASSOCIATION · 172 people · 2019 | 4/7 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.8 µg/L 30% of the EPA limit 6 µg/L Highest in the city: VILLAGE HILL APARTMENTS · 36 people · 2019 | 2/7 | SYR4 |
| Bromoform | 1.3 µg/L No EPA limit set Highest in the city: CTWC - AMSTON LAKE DIVISION · 910 people · 2019 | 4/7 | SYR4 |
| Combined Radium (-226 And -228) | 1.09 pCi/L 22% of the EPA limit 5 pCi/L Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2017
Highest in the city: 1.2625 pCi/L — CTWC - AMSTON LAKE DIVISION · 910 people · 2019 | 2/7 | SYR4 |
| Monochloroacetic Acid | 1 µg/L No EPA limit set Highest in the city: AQUARION-LEBANON · 149 people · 2019 | 1/7 | SYR4 |
| PFOS | 0.0162 µg/L No EPA limit set Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2024 | 1/7 | UCMR-5 |
| PFHXS | 0.0125 µg/L No EPA limit set Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2024 | 1/7 | UCMR-5 |
| PFOA | 0.0067 µg/L No EPA limit set Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2024 | 1/7 | UCMR-5 |
| PFBS | 0.0060 µg/L No EPA limit set Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2024 | 1/7 | UCMR-5 |
| Pfpea | 0.0039 µg/L No EPA limit set Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2024 | 1/7 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: NORWICH PUBLIC UTILITIES · 36,163 people · 2025
Highest in the city: 0.0015 mg/L — CTWC - AMSTON LAKE DIVISION · 910 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 Lebanon
| Supplier | Population served |
|---|---|
| NORWICH PUBLIC UTILITIES | 36,163 |
| CTWC - AMSTON LAKE DIVISION | 910 |
| CAREFREE HOMEOWNERS ASSOCIATION | 172 |
| AQUARION-LEBANON | 149 |
| HILLSIDE CONDOMINIUMS | 96 |
| CTWC - LEBANON ELDERLY DIV. | 67 |
| VILLAGE HILL APARTMENTS | 36 |
Frequently asked questions about Lebanon tap water
Is Lebanon tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Lebanon. 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 Lebanon?
7 public water suppliers report drinking-water monitoring for Lebanon, Connecticut to the EPA. Each is listed above with its population served.
What contaminants are in Lebanon's water?
The contaminants EPA monitoring detected in Lebanon include Nitrate, Nitrate-Nitrite, Fluoride, Nitrite, 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.