Updated 2026-10-15

County water report

Fort Bend County Water Quality: 6 Cities Ranked by the Records

Name: Fort Bend County Water Quality Data (2026)
Creator: PurityMap
License: https://creativecommons.org/licenses/by/4.0/

Fort Bend County, Texas: 6 city reports built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.

Find my system Open on the map Private wells in Fort Bend County

Across the county's systems

Highest result for each contaminant

One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.

LithiumDetected in 6 systems10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest46 µg/L

FORT BEND COUNTY MUD 2346 µg/LSample date: 2024-09-20 to 2025-03-24
CITY OF SUGAR LAND32.2 µg/LSample date: 2023-02-14 to 2023-11-14
CITY OF RICHMOND29.2 µg/LSample date: 2024-07-25 to 2025-06-23
FORT BEND COUNTY WCID 225.3 µg/LSample date: 2025-03-17 to 2025-12-29
CITY OF ROSENBERG23.6 µg/LSample date: 2024-11-04 to 2025-08-28
CITY OF FULSHEAR22.3 µg/LSample date: 2025-03-11 to 2025-09-24

Perfluorooctanoic acid (PFOA)Detected in 1 system of 6 tested4.0 ng/L federal MCL (2024) · US EPAHighest4.1 ng/L

CITY OF SUGAR LAND4.1 ng/LSample date: 2023-02-14 to 2023-11-14
CITY OF FULSHEARNot detected · below 4.0 ng/L lab reporting limitSample date: 2025-03-11 to 2025-09-24
CITY OF RICHMONDNot detected · below 4.0 ng/L lab reporting limitSample date: 2024-07-25 to 2025-06-23
CITY OF ROSENBERGNot detected · below 4.0 ng/L lab reporting limitSample date: 2024-11-04 to 2025-08-28
FORT BEND COUNTY MUD 23Not detected · below 4.0 ng/L lab reporting limitSample date: 2024-09-20 to 2025-03-24
FORT BEND COUNTY WCID 2Not detected · below 4.0 ng/L lab reporting limitSample date: 2025-03-17 to 2025-12-29

Lead (90th percentile)Detected in 3 systems of 6 tested15 µg/L federal action level · US EPAHighest2.81 µg/L

FORT BEND COUNTY WCID 22.81 µg/LMonitoring period: 2022–2024
CITY OF ROSENBERG1.87 µg/LMonitoring period: 2024–2026 (still open)
CITY OF SUGAR LAND1.51 µg/LMonitoring period: 2024–2026 (still open)
CITY OF FULSHEARNot detectedMonitoring period: 2026–2026 (still open)
CITY OF RICHMONDNot detectedMonitoring period: 2024–2026 (still open)
FORT BEND COUNTY MUD 23Not detectedMonitoring period: 2024–2026 (still open)

Perfluorobutanesulfonic acid (PFBS)Detected in 4 systems of 6 tested2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPAHighest5.8 ng/L

CITY OF SUGAR LAND5.8 ng/LSample date: 2023-02-14 to 2023-11-14
CITY OF ROSENBERG4.1 ng/LSample date: 2024-11-04 to 2025-08-28
CITY OF RICHMOND3.9 ng/LSample date: 2024-07-25 to 2025-06-23
FORT BEND COUNTY WCID 23.1 ng/LSample date: 2025-03-17 to 2025-12-29
CITY OF FULSHEARNot detected · below 3.0 ng/L lab reporting limitSample date: 2025-03-11 to 2025-09-24
FORT BEND COUNTY MUD 23Not detected · below 3.0 ng/L lab reporting limitSample date: 2024-09-20 to 2025-03-24

Perfluorohexanoic acid (PFHxA)Detected in 4 systems of 6 tested400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLEHighest12.9 ng/L

CITY OF SUGAR LAND12.9 ng/LSample date: 2023-02-14 to 2023-11-14
FORT BEND COUNTY WCID 210.5 ng/LSample date: 2025-03-17 to 2025-12-29
CITY OF ROSENBERG6 ng/LSample date: 2024-11-04 to 2025-08-28
CITY OF RICHMOND3.9 ng/LSample date: 2024-07-25 to 2025-06-23
CITY OF FULSHEARNot detected · below 3.0 ng/L lab reporting limitSample date: 2025-03-11 to 2025-09-24
FORT BEND COUNTY MUD 23Not detected · below 3.0 ng/L lab reporting limitSample date: 2024-09-20 to 2025-03-24

1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)Detected in 1 system of 6 testedNo federal or state limit; shown for transparencyHighest672 ng/L

CITY OF SUGAR LAND672 ng/LSample date: 2023-02-14 to 2023-11-14
CITY OF FULSHEARNot detected · below 5.0 ng/L lab reporting limitSample date: 2025-03-11 to 2025-09-24
CITY OF RICHMONDNot detected · below 5.0 ng/L lab reporting limitSample date: 2024-07-25 to 2025-06-23
CITY OF ROSENBERGNot detected · below 5.0 ng/L lab reporting limitSample date: 2024-11-04 to 2025-08-28
FORT BEND COUNTY MUD 23Not detected · below 5.0 ng/L lab reporting limitSample date: 2024-09-20 to 2025-03-24
FORT BEND COUNTY WCID 2Not detected · below 5.0 ng/L lab reporting limitSample date: 2025-03-17 to 2025-12-29

4,8-Dioxa-3H-perfluorononanoic acid (ADONA)Detected in 1 system of 6 testedNo federal or state limit; shown for transparencyHighest3.4 ng/L

CITY OF SUGAR LAND3.4 ng/LSample date: 2023-02-14 to 2023-11-14
CITY OF FULSHEARNot detected · below 3.0 ng/L lab reporting limitSample date: 2025-03-11 to 2025-09-24
CITY OF RICHMONDNot detected · below 3.0 ng/L lab reporting limitSample date: 2024-07-25 to 2025-06-23
CITY OF ROSENBERGNot detected · below 3.0 ng/L lab reporting limitSample date: 2024-11-04 to 2025-08-28
FORT BEND COUNTY MUD 23Not detected · below 3.0 ng/L lab reporting limitSample date: 2024-09-20 to 2025-03-24
FORT BEND COUNTY WCID 2Not detected · below 3.0 ng/L lab reporting limitSample date: 2025-03-17 to 2025-12-29

Perfluorobutanoic acid (PFBA)Detected in 4 systems of 6 testedNo federal or state limit; shown for transparencyHighest74.8 ng/L

CITY OF SUGAR LAND74.8 ng/LSample date: 2023-02-14 to 2023-11-14
CITY OF RICHMOND47.1 ng/LSample date: 2024-07-25 to 2025-06-23
CITY OF ROSENBERG33.8 ng/LSample date: 2024-11-04 to 2025-08-28
FORT BEND COUNTY WCID 213.5 ng/LSample date: 2025-03-17 to 2025-12-29
CITY OF FULSHEARNot detected · below 5.0 ng/L lab reporting limitSample date: 2025-03-11 to 2025-09-24
FORT BEND COUNTY MUD 23Not detected · below 5.0 ng/L lab reporting limitSample date: 2024-09-20 to 2025-03-24

2 more contaminants detectedShow

Perfluoroheptanoic acid (PFHpA)Detected in 1 system of 6 testedNo federal or state limit; shown for transparencyHighest3.6 ng/L

CITY OF SUGAR LAND3.6 ng/LSample date: 2023-02-14 to 2023-11-14
CITY OF FULSHEARNot detected · below 3.0 ng/L lab reporting limitSample date: 2025-03-11 to 2025-09-24
CITY OF RICHMONDNot detected · below 3.0 ng/L lab reporting limitSample date: 2024-07-25 to 2025-06-23
CITY OF ROSENBERGNot detected · below 3.0 ng/L lab reporting limitSample date: 2024-11-04 to 2025-08-28
FORT BEND COUNTY MUD 23Not detected · below 3.0 ng/L lab reporting limitSample date: 2024-09-20 to 2025-03-24
FORT BEND COUNTY WCID 2Not detected · below 3.0 ng/L lab reporting limitSample date: 2025-03-17 to 2025-12-29

Perfluoropentanoic acid (PFPeA)Detected in 4 systems of 6 testedNo federal or state limit; shown for transparencyHighest358 ng/L

CITY OF SUGAR LAND358 ng/LSample date: 2023-02-14 to 2023-11-14
CITY OF ROSENBERG132 ng/LSample date: 2024-11-04 to 2025-08-28
CITY OF RICHMOND82 ng/LSample date: 2024-07-25 to 2025-06-23
FORT BEND COUNTY WCID 258.2 ng/LSample date: 2025-03-17 to 2025-12-29
CITY OF FULSHEARNot detected · below 3.0 ng/L lab reporting limitSample date: 2025-03-11 to 2025-09-24
FORT BEND COUNTY MUD 23Not detected · below 3.0 ng/L lab reporting limitSample date: 2024-09-20 to 2025-03-24

21 PFAS tested, none detected in any systemShow

Tested in these 6 systems: CITY OF FULSHEAR, CITY OF RICHMOND, CITY OF ROSENBERG, CITY OF SUGAR LAND, FORT BEND COUNTY MUD 23, FORT BEND COUNTY WCID 2

11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
Perfluoro-3-methoxypropanoic acid (PFMPA)
Perfluoro-4-methoxybutanoic acid (PFMBA)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDoA)
Perfluoroheptanesulfonic acid (PFHpS)
Perfluorohexanesulfonic acid (PFHxS)
Perfluorononanoic acid (PFNA)
Perfluorooctanesulfonic acid (PFOS)
Perfluoropentanesulfonic acid (PFPeS)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)

6 cities

Cities ranked by the records

1
FulshearCITY OF FULSHEAR
No PFAS detected
Open city report →
2
RichmondCITY OF RICHMOND
PFAS detected, within limit
Open city report →
3
FresnoFORT BEND COUNTY MUD 23
No PFAS detected
Open city report →
4
RosenbergCITY OF ROSENBERG
PFAS detected, within limitLead below action level
Open city report →
5
StaffordFORT BEND COUNTY WCID 2
PFAS detected, within limitLead below action level
Open city report →
6
Sugar LandCITY OF SUGAR LAND
PFAS sample above a limitLead below action level
Open city report →

Showing 6 of 6 cities · scores are system-level, not tap tests

Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works.

PFAS in Fort Bend County1 of 6 city reports had a PFAS sample above a 2024 EPA limit

4.0 ng/L federal MCL · PFOS, ng/LPFAS in Texas

Lead

0of 6 cities above the 15 µg/L action level

Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.

Lead in Texas

Who supplies the county

Largest water systems

Sugar LandCITY OF SUGAR LAND · TX0790005
80,381 served
StaffordFORT BEND COUNTY WCID 2 · TX0790004
49,173 served
RosenbergCITY OF ROSENBERG · TX0790003
43,158 served
FulshearCITY OF FULSHEAR · TX0790133
34,000 served
RichmondCITY OF RICHMOND · TX0790023
25,326 served
FresnoFORT BEND COUNTY MUD 23 · TX0790237
13,695 served

Questions

Frequently asked

How does Fort Bend County tap water compare across cities?

PurityMap ranks 6 cities in Fort Bend County by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Fulshear's main water system: CITY OF FULSHEAR · PWSID TX0790133 · Purity Score 100 (Excellent) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.

How many Fort Bend County cities had a PFAS sample above a 2024 EPA limit?

1 of 6 Fort Bend County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including Sugar Land (PFOA 4.1 ng/L). That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation. PFAS were detected at any level in 4.

Is there lead in Fort Bend County tap water?

Utilities report lead as a 90th-percentile result from home taps. 3 of 6 Fort Bend County cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.

Next step

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