What was found in Montoursville'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 | 2200 µg/L 22% of the EPA limit 10000 µg/L Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2019
Highest in the city: 2710 µg/L — LCWSA VILLAGE WATER · 598 people · 2019 | 4/4 | SYR4 |
| Copper | 1381.5 µg/L 106% of the EPA limit, at the 95th percentile of samples — 1300 µg/L Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2019 | 4/4 | SYR4 |
| Fluoride | 160 µg/L 4% of the EPA limit 4000 µg/L Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2018
Highest in the city: 171 µg/L — LCWSA LIMESTONE WATER · 825 people · 2013 | 4/4 | SYR4 |
| TTHM | 15.34 µg/L 19% of the EPA limit 80 µg/L Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2019
Highest in the city: 66.24 µg/L — LCWSA VILLAGE WATER · 598 people · 2019 | 4/4 | SYR4 |
| Chloroform | 9.609 µg/L No EPA limit set Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2019
Highest in the city: 64.66 µg/L — LCWSA VILLAGE WATER · 598 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 9.53 µg/L 16% of the EPA limit 60 µg/L Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2019
Highest in the city: 59.725 µg/L — LCWSA LIMESTONE WATER · 825 people · 2019 | 4/4 | SYR4 |
| Barium | 55.22 µg/L 2.8% of the EPA limit 2000 µg/L Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2018 | 4/4 | SYR4 |
| Lead | 4 µg/L 27% of the EPA limit 15 µg/L Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2019
Highest in the city: 50.084 µg/L — LCWSA LIMESTONE WATER · 825 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 27.575 µg/L No EPA limit set Highest in the city: LCWSA LIMESTONE WATER · 825 people · 2019 | 2/4 | SYR4 |
| Dichloroacetic Acid | 20.725 µg/L No EPA limit set Highest in the city: LCWSA LIMESTONE WATER · 825 people · 2019 | 3/4 | SYR4 |
| Bromodichloromethane | 4.005 µg/L No EPA limit set Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2019
Highest in the city: 8.372 µg/L — LCWSA HALLS STATION · 518 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 1.605 µg/L No EPA limit set Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2019
Highest in the city: 5.514 µg/L — LCWSA HALLS STATION · 518 people · 2019 | 4/4 | SYR4 |
| Chromium | 2.837 µg/L 2.8% of the EPA limit 100 µg/L Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2018
Highest in the city: 5.186 µg/L — LCWSA VILLAGE WATER · 598 people · 2018 | 4/4 | SYR4 |
| Dibromoacetic Acid | 2.5 µg/L No EPA limit set Highest in the city: LCWSA HALLS STATION · 518 people · 2019 | 1/4 | SYR4 |
| Bromoform | 2.3225 µg/L No EPA limit set Highest in the city: LCWSA HALLS STATION · 518 people · 2019 | 1/4 | SYR4 |
| Monochloroacetic Acid | 1.68 µg/L No EPA limit set Highest in the city: LCWSA LIMESTONE WATER · 825 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0011 mg/L 7.2% of the EPA limit 0.0150 mg/L Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2025
Highest in the city: 0.0200 mg/L — LCWSA LIMESTONE WATER · 825 people · 1994 | 3/4 | LCR |
| PFOS | 0.0121 µg/L No EPA limit set Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2024 | 1/4 | UCMR-5 |
| PFOA | 0.0066 µg/L No EPA limit set Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2024 | 1/4 | UCMR-5 |
| Pfpea | 0.0042 µg/L No EPA limit set Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2024 | 1/4 | UCMR-5 |
| Pfhxa | 0.0033 µg/L No EPA limit set Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2024 | 1/4 | UCMR-5 |
| PFHXS | 0.0031 µg/L No EPA limit set Main supplier: MONTOURSVILLE WATER COMPANY · 4,983 people · 2024 | 1/4 | UCMR-5 |
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 Montoursville
| Supplier | Population served |
|---|---|
| MONTOURSVILLE WATER COMPANY | 4,983 |
| LCWSA LIMESTONE WATER | 825 |
| LCWSA VILLAGE WATER | 598 |
| LCWSA HALLS STATION | 518 |
Frequently asked questions about Montoursville tap water
Is Montoursville tap water safe to drink?
EPA testing detected 22 contaminants in the water serving Montoursville. 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 Montoursville?
4 public water suppliers report drinking-water monitoring for Montoursville, Pennsylvania to the EPA. Each is listed above with its population served.
What contaminants are in Montoursville's water?
The contaminants EPA monitoring detected in Montoursville include Nitrate, Copper, Fluoride, TTHM, Chloroform. 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.