Water report · not indexed
What is in the water at 92807
4 public water systems serve this ZIP code in the federal records. Everything below comes from EPA monitoring data, and everything missing is named.
CITY OF ANAHEIM
PWSID CA3010001 · CA · serves 348,593 people
PFAS and lithium
8 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 61 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 61 µg/L | 12 | 9/13/2023 |
| PFOS | 0.029 µg/L | 6 | 5/7/2025 |
| PFBA | 0.017 µg/L | 11 | 5/7/2025 |
| PFPeA | 0.012 µg/L | 16 | 5/7/2025 |
| PFHxS | 0.011 µg/L | 6 | 5/7/2025 |
| PFOA | 0.01 µg/L | 4 | 5/5/2025 |
| PFHxA | 0.0047 µg/L | 5 | 5/7/2025 |
| PFBS | 0.0034 µg/L | 1 | 5/5/2025 |
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
Too few readings to state a hardness. 1 station(s), 1 result(s). Below two stations and five results this page will not state a number: a median of two readings from one creek is not your water.
CITY OF ORANGE
PWSID CA3010027 · CA · serves 120,770 people
PFAS and lithium
8 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 70 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 36 µg/L | 16 | 9/13/2023 |
| PFPeA | 0.018 µg/L | 15 | 9/12/2023 |
| PFOS | 0.017 µg/L | 5 | 9/10/2024 |
| PFBA | 0.013 µg/L | 11 | 9/12/2023 |
| PFHxS | 0.01 µg/L | 4 | 9/10/2024 |
| PFHxA | 0.01 µg/L | 12 | 9/10/2024 |
| PFOA | 0.0093 µg/L | 4 | 9/10/2024 |
| PFBS | 0.0033 µg/L | 3 | 9/10/2024 |
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
No hardness measurement. Hardness is measured at environmental monitoring stations, and none fell inside this system’s service area. That is a gap in where monitoring happens, not a finding about the water.
GOLDEN STATE WC - PLACENTIA/YORBA LINDA
PWSID CA3010035 · CA · serves 50,196 people
PFAS and lithium
8 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 22 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 35 µg/L | 6 | 9/13/2023 |
| PFPeA | 0.011 µg/L | 4 | 7/30/2024 |
| PFHxA | 0.0077 µg/L | 2 | 7/30/2024 |
| PFBA | 0.0067 µg/L | 3 | 7/30/2024 |
| PFOS | 0.0065 µg/L | 2 | 7/30/2024 |
| PFOA | 0.006 µg/L | 2 | 7/30/2024 |
| PFBS | 0.0056 µg/L | 2 | 7/30/2024 |
| PFHxS | 0.0036 µg/L | 1 | 1/27/2025 |
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
No hardness measurement. Hardness is measured at environmental monitoring stations, and none fell inside this system’s service area. That is a gap in where monitoring happens, not a finding about the water.
YORBA LINDA WATER DISTRICT
PWSID CA3010037 · CA · serves 84,292 people
PFAS and lithium
3 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 12 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 36 µg/L | 8 | 9/13/2023 |
| PFBA | 0.021 µg/L | 2 | 5/21/2024 |
| PFPeA | 0.0053 µg/L | 2 | 5/21/2024 |
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
Too few readings to state a hardness. 1 station(s), 2 result(s). Below two stations and five results this page will not state a number: a median of two readings from one creek is not your water.
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.