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 | 480 µg/L 4.8% of the EPA limit 10000 µg/L Main supplier: LEBANON WATER AUTH · 57,000 people · 2019
Highest in the city: 5300 µg/L — WEST LEBANON TWP WATER SUPPLY · 780 people · 2019 | 3/5 | SYR4 |
| Fluoride | 972 µg/L 24% of the EPA limit 4000 µg/L Main supplier: LEBANON WATER AUTH · 57,000 people · 2019 | 1/5 | SYR4 |
| Copper | 84.6 µg/L 6.5% of the EPA limit 1300 µg/L Main supplier: LEBANON WATER AUTH · 57,000 people · 2019
Highest in the city: 528.83 µg/L — WEST LEBANON TWP WATER SUPPLY · 780 people · 2019 | 5/5 | SYR4 |
| Nitrite | 240 µg/L 24% of the EPA limit 1000 µg/L Main supplier: LEBANON WATER AUTH · 57,000 people · 2019 | 1/5 | SYR4 |
| TTHM | 72.6 µg/L 91% of the EPA limit 80 µg/L Main supplier: LEBANON WATER AUTH · 57,000 people · 2019
Highest in the city: 87.03 µg/L — BOROUGH OF CORNWALL · 3,343 people · 2019 | 5/5 | SYR4 |
| Chloroform | 67.125 µg/L No EPA limit set Main supplier: LEBANON WATER AUTH · 57,000 people · 2019
Highest in the city: 77.055 µg/L — BOROUGH OF CORNWALL · 3,343 people · 2019 | 5/5 | SYR4 |
| Dalapon | 55.8 µg/L 28% of the EPA limit 200 µg/L Main supplier: LEBANON WATER AUTH · 57,000 people · 2019 | 1/5 | SYR4 |
| Barium | 14 µg/L 0.7% of the EPA limit 2000 µg/L Main supplier: LEBANON WATER AUTH · 57,000 people · 2019
Highest in the city: 52.6 µg/L — WEST LEBANON TWP WATER SUPPLY · 780 people · 2018 | 2/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 37.775 µg/L 63% of the EPA limit 60 µg/L Main supplier: LEBANON WATER AUTH · 57,000 people · 2019
Highest in the city: 45.75 µg/L — BOROUGH OF CORNWALL · 3,343 people · 2019 | 5/5 | SYR4 |
| Lead | 40.2 µg/L 268% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: LEBANON WATER AUTH · 57,000 people · 2019 | 5/5 | SYR4 |
| Tetrachloroethylene | 30.72 µg/L 614% of the EPA limit, at the 95th percentile of samples — 5 µg/L Highest in the city: WEST LEBANON TWP WATER SUPPLY · 780 people · 2019 | 1/5 | SYR4 |
| Dichloroacetic Acid | 22.04 µg/L No EPA limit set Main supplier: LEBANON WATER AUTH · 57,000 people · 2019
Highest in the city: 24.45 µg/L — BOROUGH OF CORNWALL · 3,343 people · 2019 | 5/5 | SYR4 |
| Trichloroacetic Acid | 13.54 µg/L No EPA limit set Main supplier: LEBANON WATER AUTH · 57,000 people · 2019
Highest in the city: 18.5 µg/L — BOROUGH OF CORNWALL · 3,343 people · 2019 | 3/5 | SYR4 |
| Bromodichloromethane | 7.45 µg/L No EPA limit set Main supplier: LEBANON WATER AUTH · 57,000 people · 2019
Highest in the city: 9.55 µg/L — BOROUGH OF CORNWALL · 3,343 people · 2019 | 5/5 | SYR4 |
| Dibromochloromethane | 1.3 µg/L No EPA limit set Main supplier: LEBANON WATER AUTH · 57,000 people · 2019
Highest in the city: 8.95 µg/L — TWIN MAPLES MHP · 280 people · 2018 | 5/5 | SYR4 |
| Dibromoacetic Acid | 4.95 µg/L No EPA limit set Highest in the city: TWIN MAPLES MHP · 280 people · 2018 | 2/5 | SYR4 |
| Mercury | 4 µg/L 200% of the EPA limit, at the 95th percentile of samples — 2 µg/L Highest in the city: SUNRISE TRAILER CT · 200 people · 2018 | 1/5 | SYR4 |
| Monochloroacetic Acid | 3.46 µg/L No EPA limit set Main supplier: LEBANON WATER AUTH · 57,000 people · 2019 | 2/5 | SYR4 |
| Toluene | 3.425 µg/L 0.3% of the EPA limit 1000 µg/L Highest in the city: TWIN MAPLES MHP · 280 people · 2019 | 1/5 | SYR4 |
| Bromoform | 3 µg/L No EPA limit set Highest in the city: TWIN MAPLES MHP · 280 people · 2018 | 2/5 | SYR4 |
| Xylenes, Total | 2.625 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: TWIN MAPLES MHP · 280 people · 2019 | 1/5 | SYR4 |
| Monobromoacetic Acid | 2.16 µg/L No EPA limit set Main supplier: LEBANON WATER AUTH · 57,000 people · 2019 | 2/5 | SYR4 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L Highest in the city: WEST LEBANON TWP WATER SUPPLY · 780 people · 2018 | 1/5 | SYR4 |
| P-Dichlorobenzene | 0.9810 µg/L 1.3% of the EPA limit 75 µg/L Highest in the city: WEST LEBANON TWP WATER SUPPLY · 780 people · 2019 | 1/5 | SYR4 |
| Trichloroethylene | 0.6450 µg/L 13% of the EPA limit 5 µg/L Highest in the city: WEST LEBANON TWP WATER SUPPLY · 780 people · 2019 | 1/5 | SYR4 |
| 1,1,1-Trichloroethane | 0.5900 µg/L 0.3% of the EPA limit 200 µg/L Highest in the city: WEST LEBANON TWP WATER SUPPLY · 780 people · 2019 | 1/5 | SYR4 |
| Hexachlorocyclopentadiene | 0.2600 µg/L 0.5% of the EPA limit 50 µg/L Main supplier: LEBANON WATER AUTH · 57,000 people · 2019 | 1/5 | SYR4 |
| Lead | 0.0071 mg/L 47% of the EPA limit 0.0150 mg/L Main supplier: LEBANON WATER AUTH · 57,000 people · 2025
Highest in the city: 0.0140 mg/L — WEST LEBANON TWP WATER SUPPLY · 780 people · 1993 | 5/5 | 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 |
|---|---|
| LEBANON WATER AUTH | 57,000 |
| BOROUGH OF CORNWALL | 3,343 |
| WEST LEBANON TWP WATER SUPPLY | 780 |
| TWIN MAPLES MHP | 280 |
| SUNRISE TRAILER CT | 200 |
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?
5 public water suppliers report drinking-water monitoring for Lebanon, Pennsylvania 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, Fluoride, Copper, Nitrite, TTHM. 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.