Water report · not indexed
What is in the water at 77040
7 public water systems serve this ZIP code in the federal records. Everything below comes from EPA monitoring data, and everything missing is named.
FORT BEND COUNTY MUD 146
PWSID TX0790435 · TX
PFAS and lithium
6 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 20 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 9.7 µg/L | 2 | 3/31/2025 |
| 6:2 FTS | 0.0071 µg/L | 1 | 6/3/2025 |
| PFBA | 0.0065 µg/L | 6 | 6/3/2025 |
| PFPeA | 0.0049 µg/L | 5 | 3/31/2025 |
| PFHxA | 0.0041 µg/L | 5 | 3/31/2025 |
| PFBS | 0.0031 µg/L | 1 | 12/1/2025 |
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.
CITY OF HOUSTON
PWSID TX1010013 · TX · serves 2,202,531 people
PFAS and lithium
5 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 115 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 34 µg/L | 69 | 8/31/2023 |
| 6:2 FTS | 0.043 µg/L | 10 | 3/8/2023 |
| PFBA | 0.011 µg/L | 9 | 3/6/2023 |
| PFPeA | 0.0067 µg/L | 11 | 5/1/2023 |
| PFHxA | 0.0051 µg/L | 16 | 8/31/2023 |
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 161 mg/L as CaCO₃, measured at 34 stations serving this system across 34 results, 2015-01-12 to 2016-08-09. Measured in the water source and distribution area, not at a tap, and not in your home.
CITY OF JERSEY VILLAGE
PWSID TX1010016 · TX · serves 7,792 people
PFAS and lithium
6 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 28 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 32 µg/L | 10 | 9/19/2023 |
| PFBA | 0.031 µg/L | 5 | 8/16/2023 |
| PFPeA | 0.0077 µg/L | 5 | 8/16/2023 |
| PFHxA | 0.0073 µg/L | 5 | 8/16/2023 |
| PFBS | 0.0037 µg/L | 1 | 12/21/2023 |
| PFHxS | 0.0035 µg/L | 2 | 12/21/2023 |
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
1 open health-based violation(s) recorded in SDWIS and not yet returned to compliance.
- MCL · contaminant code 1045 · began 2026-04-01
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.
HARRIS COUNTY MUD 23
PWSID TX1010649 · TX · serves 3,170 people
PFAS and lithium
4 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 11 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 24 µg/L | 5 | 8/6/2024 |
| PFBA | 0.0073 µg/L | 2 | 5/6/2024 |
| PFPeA | 0.0052 µg/L | 2 | 5/6/2024 |
| PFHxA | 0.0045 µg/L | 2 | 5/6/2024 |
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.
SUNBELT FWSD WOODLAND OAKS SUBDIVISION
PWSID TX1010758 · TX · serves 4,527 people
PFAS and lithium
3 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 7 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 21 µg/L | 5 | 8/15/2025 |
| PFPeA | 0.0033 µg/L | 1 | 2/26/2025 |
| PFHxA | 0.0031 µg/L | 1 | 2/26/2025 |
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.
WINDFERN FOREST UTILITY DISTRICT
PWSID TX1010924 · TX · serves 7,170 people
PFAS and lithium
4 compounds detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 10 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 41 µg/L | 7 | 8/12/2025 |
| PFBA | 0.0053 µg/L | 1 | 4/22/2025 |
| PFPeA | 0.004 µg/L | 1 | 4/22/2025 |
| PFHxA | 0.0037 µg/L | 1 | 4/22/2025 |
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.
WEST HARRIS COUNTY MUD 1
PWSID TX1010925 · TX · serves 1,581 people
PFAS and lithium
1 compound detected at or above the reporting limit under EPA’s UCMR 5 monitoring, across 2 samples.
| Compound | Highest detected | Samples | Most recent |
|---|---|---|---|
| lithium | 14 µg/L | 2 | 9/26/2023 |
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
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.
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.