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Updated 2026-10-15
County water report

Brazoria County Water Quality: 6 Cities Ranked by the Records

Brazoria 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 systemOpen on the mapPrivate wells in Brazoria 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 EPAHighest33.1 µg/L
Perfluorooctanesulfonic acid (PFOS)Detected in 1 system of 6 tested4.0 ng/L federal MCL (2024) · US EPAHighest4.4 ng/L
  • CITY OF PEARLAND4.4 ng/LSample date: 2025-01-08 to 2025-10-21
  • CITY OF ALVINNot detected · below 4.0 ng/L lab reporting limitSample date: 2023-10-20 to 2024-04-04
  • CITY OF ANGLETONNot detected · below 4.0 ng/L lab reporting limitSample date: 2023-02-21 to 2024-06-18
  • CITY OF CLUTENot detected · below 4.0 ng/L lab reporting limitSample date: 2023-04-24 to 2023-10-24
  • CITY OF FREEPORTNot detected · below 4.0 ng/L lab reporting limitSample date: 2023-03-08 to 2024-03-18
  • CITY OF LAKE JACKSONNot detected · below 4.0 ng/L lab reporting limitSample date: 2025-03-11 to 2026-02-02
Copper (90th percentile)Detected in 1 system1.3 mg/L federal action level · US EPAHighest1.36 mg/L
Perfluorohexanesulfonic acid (PFHxS)Detected in 3 systems of 6 tested10 ng/L federal MCL (2024) · US EPAHighest4.1 ng/L
  • CITY OF PEARLAND4.1 ng/LSample date: 2025-01-08 to 2025-10-21
  • CITY OF CLUTE3.8 ng/LSample date: 2023-04-24 to 2023-10-24
  • CITY OF ANGLETON3.6 ng/LSample date: 2023-02-21 to 2024-06-18
  • CITY OF ALVINNot detected · below 3.0 ng/L lab reporting limitSample date: 2023-10-20 to 2024-04-04
  • CITY OF FREEPORTNot detected · below 3.0 ng/L lab reporting limitSample date: 2023-03-08 to 2024-03-18
  • CITY OF LAKE JACKSONNot detected · below 3.0 ng/L lab reporting limitSample date: 2025-03-11 to 2026-02-02
Lead (90th percentile)Detected in 2 systems of 6 tested15 µg/L federal action level · US EPAHighest2.1 µg/L
Perfluorobutanesulfonic acid (PFBS)Detected in 4 systems of 6 tested2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPAHighest4.9 ng/L
Perfluorohexanoic acid (PFHxA)Detected in 5 systems of 6 tested400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLEHighest8.9 ng/L
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)Detected in 1 system of 6 testedNo federal or state limit; shown for transparencyHighest26.9 ng/L
  • CITY OF CLUTE26.9 ng/LSample date: 2023-04-24 to 2023-10-24
  • CITY OF ALVINNot detected · below 20.0 ng/L lab reporting limitSample date: 2023-10-20 to 2024-04-04
  • CITY OF ANGLETONNot detected · below 20.0 ng/L lab reporting limitSample date: 2023-02-21 to 2024-06-18
  • CITY OF FREEPORTNot detected · below 20.0 ng/L lab reporting limitSample date: 2023-03-08 to 2024-03-18
  • CITY OF LAKE JACKSONNot detected · below 20.0 ng/L lab reporting limitSample date: 2025-03-11 to 2026-02-02
  • CITY OF PEARLANDNot detected · below 20.0 ng/L lab reporting limitSample date: 2025-01-08 to 2025-10-21
2 more contaminants detectedShow
Perfluorobutanoic acid (PFBA)Detected in 5 systems of 6 testedNo federal or state limit; shown for transparencyHighest20.2 ng/L
Perfluoropentanoic acid (PFPeA)Detected in 5 systems of 6 testedNo federal or state limit; shown for transparencyHighest205 ng/L
22 PFAS tested, none detected in any systemShow

Tested in these 6 systems: CITY OF ALVIN, CITY OF ANGLETON, CITY OF CLUTE, CITY OF FREEPORT, CITY OF LAKE JACKSON, CITY OF PEARLAND

  • 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)
  • 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
  • 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
  • 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)
  • 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)
  • Perfluoroheptanoic acid (PFHpA)
  • Perfluorononanoic acid (PFNA)
  • Perfluorooctanoic acid (PFOA)
  • Perfluoropentanesulfonic acid (PFPeS)
  • Perfluorotetradecanoic acid (PFTA)
  • Perfluorotridecanoic acid (PFTrDA)
  • Perfluoroundecanoic acid (PFUnA)
6 cities

Cities ranked by the records

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 Brazoria County1 of 6 city reports had a PFAS sample above a 2024 EPA limit
  1. Pearland4.4 ng/L
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

  1. PearlandCITY OF PEARLAND · TX0200008
    125,828 served
  2. Lake JacksonCITY OF LAKE JACKSON · TX0200006
    27,314 served
  3. AlvinCITY OF ALVIN · TX0200001
    26,244 served
  4. AngletonCITY OF ANGLETON · TX0200002
    19,429 served
  5. CluteCITY OF CLUTE · TX0200004
    10,604 served
  6. FreeportCITY OF FREEPORT · TX0200005
    10,594 served
Questions

Frequently asked

How does Brazoria County tap water compare across cities?

PurityMap ranks 6 cities in Brazoria 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 Alvin's main water system: CITY OF ALVIN · PWSID TX0200001 · 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 Brazoria County cities had a PFAS sample above a 2024 EPA limit?

1 of 6 Brazoria County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including Pearland (PFOS 4.4 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 5.

Is there lead in Brazoria County tap water?

Utilities report lead as a 90th-percentile result from home taps. 2 of 6 Brazoria 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.

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