What was found in Kennett Square'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 | 8700 µg/L 87% of the EPA limit 10000 µg/L Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2019 | 3/3 | SYR4 |
| Copper | 405.95 µg/L 31% of the EPA limit 1300 µg/L Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2019
Highest in the city: 553.6 µg/L — LONGWOOD GARDENS · 440 people · 2019 | 3/3 | SYR4 |
| TTHM | 46.875 µg/L 59% of the EPA limit 80 µg/L Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 44.825 µg/L 75% of the EPA limit 60 µg/L Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2019 | 3/3 | SYR4 |
| Chloroform | 42.745 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2019 | 3/3 | SYR4 |
| Barium | 33 µg/L 1.7% of the EPA limit 2000 µg/L Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2018 | 1/3 | SYR4 |
| Dichloroacetic Acid | 23.2 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2019 | 2/3 | SYR4 |
| Trichloroacetic Acid | 20 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2019 | 2/3 | SYR4 |
| Combined Uranium | 13.2096 µg/L 44% of the EPA limit 30 µg/L Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2015 | 1/3 | SYR4 |
| Bromodichloromethane | 8.33 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2019
Highest in the city: 11.12 µg/L — LONGWOOD GARDENS · 440 people · 2019 | 2/3 | SYR4 |
| Lead | 9 µg/L 60% of the EPA limit 15 µg/L Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2019
Highest in the city: 10.85 µg/L — STONE BARN RENTALS · 120 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 6.9 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2019 | 1/3 | SYR4 |
| Dibromochloromethane | 2.055 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2019
Highest in the city: 6.8 µg/L — LONGWOOD GARDENS · 440 people · 2019 | 2/3 | SYR4 |
| Antimony, Total | 5 µg/L 83% of the EPA limit 6 µg/L Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2018 | 1/3 | SYR4 |
| Bromoform | 1.385 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2019
Highest in the city: 3.04 µg/L — LONGWOOD GARDENS · 440 people · 2019 | 2/3 | SYR4 |
| Carbon Tetrachloride | 0.9000 µg/L 18% of the EPA limit 5 µg/L Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2019 | 1/3 | SYR4 |
| Pfba | 0.0189 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2023 | 1/3 | UCMR-5 |
| PFOA | 0.0177 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2023 | 1/3 | UCMR-5 |
| PFOS | 0.0144 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2023 | 1/3 | UCMR-5 |
| Pfpea | 0.0126 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2023 | 1/3 | UCMR-5 |
| Pfhxa | 0.0114 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2023 | 1/3 | UCMR-5 |
| Pfhpa | 0.0078 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2023 | 1/3 | UCMR-5 |
| PFBS | 0.0045 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2023 | 1/3 | UCMR-5 |
| PFHXS | 0.0042 µg/L No EPA limit set Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2023 | 1/3 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: KENNETT SQUARE MUN WATER WORKS · 6,328 people · 2025
Highest in the city: 0.0040 mg/L — STONE BARN RENTALS · 120 people · 1996 | 3/3 | 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 Kennett Square
| Supplier | Population served |
|---|---|
| KENNETT SQUARE MUN WATER WORKS | 6,328 |
| LONGWOOD GARDENS | 440 |
| STONE BARN RENTALS | 120 |
Frequently asked questions about Kennett Square tap water
Is Kennett Square tap water safe to drink?
EPA testing detected 25 contaminants in the water serving Kennett Square. 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 Kennett Square?
3 public water suppliers report drinking-water monitoring for Kennett Square, Pennsylvania to the EPA. Each is listed above with its population served.
What contaminants are in Kennett Square's water?
The contaminants EPA monitoring detected in Kennett Square include Nitrate, Copper, TTHM, Total Haloacetic Acids (HAA5), 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.