What was found in Southampton'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 | 2707.5 µg/L 27% of the EPA limit 10000 µg/L Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| Barium | 663.3 µg/L 33% of the EPA limit 2000 µg/L Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2018 | 1/1 | SYR4 |
| Copper | 332.05 µg/L 26% of the EPA limit 1300 µg/L Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| TTHM | 57.47 µg/L 72% of the EPA limit 80 µg/L Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| Chloroform | 42.315 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 28.58 µg/L 48% of the EPA limit 60 µg/L Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 11.9 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 11.89 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| Lead | 8 µg/L 53% of the EPA limit 15 µg/L Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| Chromium | 6.28 µg/L 6.3% of the EPA limit 100 µg/L Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2018 | 1/1 | SYR4 |
| Trichloroacetic Acid | 5 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 4.68352 µg/L 16% of the EPA limit 30 µg/L Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2017 | 1/1 | SYR4 |
| Dibromochloromethane | 4.655 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| Selenium | 2.145 µg/L 4.3% of the EPA limit 50 µg/L Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2018 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| Bromoform | 0.7430 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| Trichloroethylene | 0.6000 µg/L 12% of the EPA limit 5 µg/L Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| Arsenic | 0.5200 µg/L 5.2% of the EPA limit 10 µg/L Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2018 | 1/1 | SYR4 |
| Xylenes, Total | 0.1700 µg/L 0% of the EPA limit 10000 µg/L Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2019 | 1/1 | SYR4 |
| Pfba | 0.0193 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2024 | 1/1 | UCMR-5 |
| PFOS | 0.0164 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2024 | 1/1 | UCMR-5 |
| PFOA | 0.0142 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2024 | 1/1 | UCMR-5 |
| Pfpea | 0.0083 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2024 | 1/1 | UCMR-5 |
| Pfhxa | 0.0076 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2024 | 1/1 | UCMR-5 |
| PFBS | 0.0075 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2024 | 1/1 | UCMR-5 |
| Pfhpa | 0.0051 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2024 | 1/1 | UCMR-5 |
| PFHXS | 0.0050 µg/L No EPA limit set Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2024 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: UPPER SOUTHAMPTON MUN AUTH · 16,000 people · 2025 | 1/1 | 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 Southampton
| Supplier | Population served |
|---|---|
| UPPER SOUTHAMPTON MUN AUTH | 16,000 |
Frequently asked questions about Southampton tap water
Is Southampton tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Southampton. 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 Southampton?
1 public water supplier report drinking-water monitoring for Southampton, Pennsylvania to the EPA. Each is listed above with its population served.
What contaminants are in Southampton's water?
The contaminants EPA monitoring detected in Southampton include Nitrate, Barium, Copper, 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.