Jefferson County Water Quality: 5 Cities Ranked by the Records

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

Jefferson County, Texas: 5 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 Jefferson 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 1 system of 5 tested10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest15.7 µg/L

CITY OF BEAUMONT WATER UTILITY DEPT15.7 µg/LSample date: 2023-01-11 to 2023-10-04
CITY OF GROVESNot detected · below 9.0 µg/L lab reporting limitSample date: 2023-10-23 to 2024-07-26
CITY OF NEDERLANDNot detected · below 9.0 µg/L lab reporting limitSample date: 2025-03-24 to 2025-12-11
CITY OF PORT ARTHURNot detected · below 9.0 µg/L lab reporting limitSample date: 2023-10-23 to 2024-04-29
CITY OF PORT NECHESNot detected · below 9.0 µg/L lab reporting limitSample date: 2023-01-11 to 2023-10-11

Lead (90th percentile)Detected in 4 systems of 5 tested15 µg/L federal action level · US EPAHighest2.35 µg/L

CITY OF PORT ARTHUR2.35 µg/LMonitoring period: 2023–2025
CITY OF NEDERLAND1.81 µg/LMonitoring period: 2023–2025
CITY OF GROVES0.93 µg/LMonitoring period: 2024–2026 (still open)
CITY OF BEAUMONT WATER UTILITY DEPT0.83 µg/LMonitoring period: 2024–2024
CITY OF PORT NECHESNot detectedMonitoring period: 2023–2025

Perfluorobutanoic acid (PFBA)Detected in 1 system of 5 testedNo federal or state limit; shown for transparencyHighest5.5 ng/L

CITY OF PORT ARTHUR5.5 ng/LSample date: 2023-12-05 to 2024-04-30
CITY OF BEAUMONT WATER UTILITY DEPTNot detected · below 5.0 ng/L lab reporting limitSample date: 2023-01-11 to 2023-10-04
CITY OF GROVESNot detected · below 5.0 ng/L lab reporting limitSample date: 2024-03-22 to 2025-10-17
CITY OF NEDERLANDNot detected · below 5.0 ng/L lab reporting limitSample date: 2025-03-24 to 2026-01-29
CITY OF PORT NECHESNot detected · below 5.0 ng/L lab reporting limitSample date: 2023-01-11 to 2023-10-11

28 PFAS tested, none detected in any systemShow

Tested in these 5 systems: CITY OF BEAUMONT WATER UTILITY DEPT, CITY OF GROVES, CITY OF NEDERLAND, CITY OF PORT ARTHUR, CITY OF PORT NECHES

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)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
Perfluoro-3-methoxypropanoic acid (PFMPA)
Perfluoro-4-methoxybutanoic acid (PFMBA)
Perfluorobutanesulfonic acid (PFBS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDoA)
Perfluoroheptanesulfonic acid (PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexanesulfonic acid (PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanoic acid (PFNA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid (PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)

5 cities

Cities ranked by the records

1
BeaumontCITY OF BEAUMONT WATER UTILITY DEPT
No PFAS detectedLead below action level
Open city report →
2
Port NechesCITY OF PORT NECHES
No PFAS detected
Open city report →
3
Port ArthurCITY OF PORT ARTHUR
PFAS detected, within limitLead below action level
Open city report →
4
NederlandCITY OF NEDERLAND
No PFAS detectedLead below action level
Open city report →
5
GrovesCITY OF GROVES
No PFAS detectedLead below action level
Open city report →

Showing 5 of 5 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 Jefferson CountyPFAS detected in 1 of 5 cities; none had a sample above a 2024 EPA limit

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

Lead

0of 5 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

BeaumontCITY OF BEAUMONT WATER UTILITY DEPT · TX1230001
113,567 served
Port ArthurCITY OF PORT ARTHUR · TX1230009
56,039 served
NederlandCITY OF NEDERLAND · TX1230006
18,157 served
GrovesCITY OF GROVES · TX1230012
17,335 served
Port NechesCITY OF PORT NECHES · TX1230010
17,043 served

Questions

Frequently asked

How does Jefferson County tap water compare across cities?

PurityMap ranks 5 cities in Jefferson 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 Beaumont's main water system: CITY OF BEAUMONT WATER UTILITY DEPT · PWSID TX1230001 · Purity Score 99 (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 Jefferson County cities had a PFAS sample above a 2024 EPA limit?

None of the 5 Jefferson County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing. PFAS were detected below the limit in 1.

Is there lead in Jefferson County tap water?

Utilities report lead as a 90th-percentile result from home taps. 4 of 5 Jefferson 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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