Water report · not indexed
What is in the water at 18974
5 public water systems serve this ZIP code in the federal records. Everything below comes from EPA monitoring data, and everything missing is named.
WARMINSTER MUNICIPAL AUTHORITY
PWSID PA1090069 · PA · serves 40,000 people
PFAS and lithium
2 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 8 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| PFPeA | 0.029 µg/L | 4 | 5/17/2023 |
| PFBA | 0.016 µg/L | 4 | 5/17/2023 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
No open health-based violation on record. This covers MCL, treatment technique and MRDL violations in SDWIS that have not been returned to compliance. It excludes monitoring and reporting violations, which are the large majority nationally, so this is not “no violations”, and SDWIS completeness varies by state.
Hardness
Median hardness 219 mg/L as CaCO₃, measured at 8 stations serving this system across 65 results, 2018-05-03 to 2019-05-17. Measured in the water source and distribution area, not at a tap, and not in your home.
BCWSA MAIN LOWER SOUTH
PWSID PA1090079 · PA · serves 52,621 people
PFAS and lithium
8 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 39 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| PFPeA | 0.019 µg/L | 7 | 8/7/2024 |
| PFHxA | 0.012 µg/L | 7 | 8/7/2024 |
| PFBA | 0.0075 µg/L | 4 | 8/7/2024 |
| PFOA | 0.0073 µg/L | 6 | 8/7/2024 |
| PFOS | 0.0069 µg/L | 4 | 8/7/2024 |
| PFBS | 0.0056 µg/L | 4 | 8/7/2024 |
| PFHxS | 0.0048 µg/L | 4 | 8/7/2024 |
| PFHpA | 0.0032 µg/L | 3 | 8/7/2024 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
No open health-based violation on record. This covers MCL, treatment technique and MRDL violations in SDWIS that have not been returned to compliance. It excludes monitoring and reporting violations, which are the large majority nationally, so this is not “no violations”, and SDWIS completeness varies by state.
Hardness
Median hardness 138 mg/L as CaCO₃, measured at 2 stations serving this system across 174 results, 2015-01-22 to 2026-03-18. Measured in the water source and distribution area, not at a tap, and not in your home.
NORTHAMPTON BUCKS CO MUN AUTH
PWSID PA1090089 · PA · serves 36,750 people
PFAS and lithium
10 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 172 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 19 µg/L | 6 | 6/11/2025 |
| PFOS | 0.023 µg/L | 24 | 6/11/2025 |
| PFPeA | 0.021 µg/L | 25 | 6/11/2025 |
| PFOA | 0.02 µg/L | 27 | 6/11/2025 |
| PFHxA | 0.018 µg/L | 25 | 6/11/2025 |
| PFBS | 0.015 µg/L | 24 | 6/11/2025 |
| PFHpA | 0.0086 µg/L | 21 | 6/11/2025 |
| PFBA | 0.0081 µg/L | 11 | 6/11/2025 |
| PFHxS | 0.0055 µg/L | 7 | 6/11/2025 |
| PFNA | 0.0043 µg/L | 2 | 6/11/2025 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
No open health-based violation on record. This covers MCL, treatment technique and MRDL violations in SDWIS that have not been returned to compliance. It excludes monitoring and reporting violations, which are the large majority nationally, so this is not “no violations”, and SDWIS completeness varies by state.
Hardness
Median hardness 218 mg/L as CaCO₃, measured at 2 stations serving this system across 17 results, 2018-04-25 to 2018-09-06. Measured in the water source and distribution area, not at a tap, and not in your home.
WARWICK TWP WATER & SEWER AUTH
PWSID PA1090127 · PA · serves 14,699 people
PFAS and lithium
8 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 29 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| PFPeA | 0.017 µg/L | 4 | 8/4/2025 |
| PFHxA | 0.012 µg/L | 4 | 8/4/2025 |
| PFBA | 0.0078 µg/L | 4 | 8/4/2025 |
| PFOA | 0.0076 µg/L | 4 | 8/4/2025 |
| PFOS | 0.0071 µg/L | 3 | 8/4/2025 |
| PFBS | 0.0053 µg/L | 4 | 8/4/2025 |
| PFHxS | 0.0053 µg/L | 3 | 8/4/2025 |
| PFHpA | 0.0034 µg/L | 3 | 8/4/2025 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
No open health-based violation on record. This covers MCL, treatment technique and MRDL violations in SDWIS that have not been returned to compliance. It excludes monitoring and reporting violations, which are the large majority nationally, so this is not “no violations”, and SDWIS completeness varies by state.
Hardness
Median hardness 158 mg/L as CaCO₃, measured at 7 stations serving this system across 135 results, 2019-08-26 to 2026-03-18. Measured in the water source and distribution area, not at a tap, and not in your home.
AQUA PA MAIN SYSTEM
PWSID PA1460073 · PA · serves 822,600 people
PFAS and lithium
10 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 227 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 16 µg/L | 2 | 8/12/2024 |
| PFPeA | 0.022 µg/L | 43 | 9/25/2024 |
| PFHxA | 0.017 µg/L | 42 | 9/25/2024 |
| PFOA | 0.013 µg/L | 35 | 9/10/2024 |
| PFNA | 0.012 µg/L | 7 | 8/20/2024 |
| PFBA | 0.01 µg/L | 20 | 8/7/2024 |
| PFBS | 0.0095 µg/L | 35 | 9/25/2024 |
| PFOS | 0.0092 µg/L | 16 | 9/10/2024 |
| PFHxS | 0.0077 µg/L | 11 | 9/10/2024 |
| PFHpA | 0.0069 µg/L | 16 | 8/20/2024 |
A detection is a measurement, not a violation and not a health finding. EPA states that UCMR 5 results do not indicate compliance or non-compliance with any limit.
Health-based violations
No open health-based violation on record. This covers MCL, treatment technique and MRDL violations in SDWIS that have not been returned to compliance. It excludes monitoring and reporting violations, which are the large majority nationally, so this is not “no violations”, and SDWIS completeness varies by state.
Hardness
Median hardness 188 mg/L as CaCO₃, measured at 14 stations serving this system across 60 results, 2015-02-05 to 2023-10-25. Measured in the water source and distribution area, not at a tap, and not in your home.
What this report cannot tell you
Every figure describes water at a sampling point: a treatment plant, an entry point to the distribution system, or a monitoring station. None of it describes water arriving at your tap. Plumbing between the two can add lead and copper, and if your home was built before 1986 a test kit tells you something no federal dataset can.
Sources: EPA UCMR 5 occurrence (final release, frozen July 2026) · EPA SDWIS health-based violations · USGS and state monitoring via the Water Quality Portal · EPA Public Water System Service Area Boundaries v3. Compiled 2026-09-01.