Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2018-05-01 → 2018-05-31 |
| TT | Health-based | Resolved | 2018-05-01 → 2018-05-31 |
| TT | Health-based | Resolved | 2018-05-01 → 2018-05-31 |
| TT | Health-based | Resolved | 2018-05-01 → 2018-05-31 |
| MR | Monitoring | Resolved | 2024-07-01 → 2024-09-30 |
| MR | Monitoring | Resolved | 2024-07-01 → 2024-09-30 |
| MR | Monitoring | Resolved | 2024-01-01 → 2024-03-31 |
| MR | Monitoring | Resolved | 2024-01-01 → 2024-03-31 |
| MR | Monitoring | Resolved | 2024-01-01 → 2024-03-31 |
| MR | Monitoring | Resolved | 2024-01-01 → 2024-03-31 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 3315 µg/L 33% of the EPA limit 10000 µg/L
worst single sample: 4000 µg/L | 158/190 | SYR4 | 2012–2019 |
| Copper | 705 µg/L 54% of the EPA limit 1300 µg/L
worst single sample: 1000 µg/L | 127/130 | SYR4 | 2013–2019 |
| TTHM | 69.465 µg/L 87% of the EPA limit 80 µg/L
worst single sample: 92.8 µg/L | 104/107 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 27.05 µg/L 45% of the EPA limit 60 µg/L
worst single sample: 38 µg/L | 91/107 | SYR4 | 2012–2019 |
| Chloroform | 53.96 µg/L No EPA limit set
worst single sample: 61.6 µg/L | 80/84 | SYR4 | 2017–2019 |
| Bromodichloromethane | 18.26 µg/L No EPA limit set
worst single sample: 21.3 µg/L | 47/48 | SYR4 | 2017–2019 |
| Dibromochloromethane | 7.15 µg/L No EPA limit set
worst single sample: 9.5 µg/L | 46/48 | SYR4 | 2017–2019 |
| Dichloroacetic Acid | 18.4 µg/L No EPA limit set
worst single sample: 21.6 µg/L | 41/48 | SYR4 | 2017–2019 |
| Trichloroacetic Acid | 13.2 µg/L No EPA limit set
worst single sample: 15 µg/L | 41/48 | SYR4 | 2017–2019 |
| Arsenic | 6.24 µg/L 62% of the EPA limit 10 µg/L
worst single sample: 6.4 µg/L | 37/60 | SYR4 | 2012–2019 |
| Barium | 935.5 µg/L 47% of the EPA limit 2000 µg/L
worst single sample: 1128 µg/L | 34/34 | SYR4 | 2012–2019 |
| Chromium | 7.34 µg/L 7.3% of the EPA limit 100 µg/L
worst single sample: 8.4 µg/L | 33/34 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 1.77 µg/L No EPA limit set
worst single sample: 2 µg/L | 27/48 | SYR4 | 2017–2019 |
| Lead | 11.98 µg/L 80% of the EPA limit 15 µg/L
worst single sample: 15 µg/L | 25/129 | SYR4 | 2013–2019 |
| Bromoform | 1.69 µg/L No EPA limit set
worst single sample: 2 µg/L | 22/48 | SYR4 | 2017–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 16/16 | LCR | 2025 |
| Selenium | 1.42 µg/L 2.8% of the EPA limit 50 µg/L
worst single sample: 1.6 µg/L | 13/34 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 4.9 µg/L 98% of the EPA limit 5 µg/L
worst single sample: 5 µg/L | 11/155 | SYR4 | 2012–2019 |
| Combined Uranium | 7.76677 µg/L 26% of the EPA limit 30 µg/L
worst single sample: 8.08623 µg/L | 9/9 | SYR4 | 2014–2017 |
| Monochloroacetic Acid | 2.94 µg/L No EPA limit set
worst single sample: 3 µg/L | 7/48 | SYR4 | 2017–2019 |
| 1,1-Dichloroethylene | 2.275 µg/L 33% of the EPA limit 7 µg/L
worst single sample: 2.3 µg/L | 2/155 | SYR4 | 2012–2019 |
| Lithium | 13.9 µg/L No EPA limit set | 2/26 | UCMR-5 | 2025 |
| 1,1,1-Trichloroethane | 0.6000 µg/L 0.3% of the EPA limit 200 µg/L | 1/155 | SYR4 | 2012–2019 |
| Fluoride | 100 µg/L 2.5% of the EPA limit 4000 µg/L | 1/35 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set | 1/48 | SYR4 | 2017–2019 |
| Toluene | 2 µg/L 0.2% of the EPA limit 1000 µg/L | 1/155 | SYR4 | 2012–2019 |
| Trichloroethylene | 0.5000 µg/L 10% of the EPA limit 5 µg/L | 1/155 | SYR4 | 2012–2019 |
45 contaminants tested, none detected
Utility contact
Frequently asked questions about Horsham Water&Sewer Authority
Is Horsham Water&Sewer Authority tap water safe to drink?
EPA monitoring detected 35 contaminants in Horsham Water&Sewer Authority's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Horsham Water&Sewer Authority's water?
EPA monitoring detected Nitrate, Copper, TTHM, Total Haloacetic Acids (HAA5), Chloroform, and others. The full list with the level and data source for each is above.
How many people does Horsham Water&Sewer Authority serve?
Horsham Water&Sewer Authority reports serving 26,000 people in Pennsylvania, per its EPA record.
Has Horsham Water&Sewer Authority had any water quality violations?
The EPA has 563 violations on file for Horsham Water&Sewer Authority, of which 4 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.
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.