El Paso County Water Quality: 2 Cities Ranked by the Records
El Paso County, Texas: 2 city reports built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.
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 2 systems10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest133.4 µg/L
- EL PASO WATER UTILITIES133.4 µg/LSample date: 2023-07-11 to 2026-05-20
- FORT BLISS MAIN POST AREA40.8 µg/LSample date: 2024-01-29 to 2024-07-30
Perfluorooctanesulfonic acid (PFOS)Detected in 1 system of 2 tested4.0 ng/L federal MCL (2024) · US EPAHighest8.5 ng/L
- EL PASO WATER UTILITIES8.5 ng/LSample date: 2023-07-11 to 2026-05-20
- FORT BLISS MAIN POST AREANot detected · below 4.0 ng/L lab reporting limitSample date: 2024-01-29 to 2024-07-30
Water hardnessDetected in 1 systemAesthetic, no federal health limit · USGSHighest10.2 gpg
- EL PASO WATER UTILITIES10.2 gpgReporting year: 2024
Total trihalomethanes (TTHM)Detected in 1 system80 ppb federal MCL · US EPAHighest71 ppb
- EL PASO WATER UTILITIES71 ppbReporting year: 2024
Haloacetic acids (HAA5)Detected in 1 system60 ppb federal MCL · US EPAHighest35.4 ppb
- EL PASO WATER UTILITIES35.4 ppbReporting year: 2024
Perfluorohexanesulfonic acid (PFHxS)Detected in 2 systems10 ng/L federal MCL (2024) · US EPAHighest5.5 ng/L
- EL PASO WATER UTILITIES5.5 ng/LSample date: 2023-07-11 to 2026-05-20
- FORT BLISS MAIN POST AREA3.7 ng/LSample date: 2024-01-29 to 2024-07-30
Perfluorobutanesulfonic acid (PFBS)Detected in 1 system of 2 tested2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPAHighest8.5 ng/L
- EL PASO WATER UTILITIES8.5 ng/LSample date: 2023-07-11 to 2026-05-20
- FORT BLISS MAIN POST AREANot detected · below 3.0 ng/L lab reporting limitSample date: 2024-01-29 to 2024-07-30
Perfluorohexanoic acid (PFHxA)Detected in 2 systems400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLEHighest4.5 ng/L
- EL PASO WATER UTILITIES4.5 ng/LSample date: 2023-07-11 to 2026-05-20
- FORT BLISS MAIN POST AREA3.1 ng/LSample date: 2024-01-29 to 2024-07-30
2 more contaminants detectedShow
Perfluorobutanoic acid (PFBA)Detected in 1 system of 2 testedNo federal or state limit; shown for transparencyHighest11 ng/L
- EL PASO WATER UTILITIES11 ng/LSample date: 2023-07-11 to 2026-05-20
- FORT BLISS MAIN POST AREANot detected · below 5.0 ng/L lab reporting limitSample date: 2024-01-29 to 2024-07-30
Perfluoropentanoic acid (PFPeA)Detected in 1 system of 2 testedNo federal or state limit; shown for transparencyHighest5.9 ng/L
- EL PASO WATER UTILITIES5.9 ng/LSample date: 2023-07-11 to 2026-05-20
- FORT BLISS MAIN POST AREANot detected · below 3.0 ng/L lab reporting limitSample date: 2024-01-29 to 2024-07-30
24 substances tested, none detected in any systemShow
Tested in these 2 systems: EL PASO WATER UTILITIES, FORT BLISS MAIN POST AREA
- 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)
- Lead (90th percentile)
- 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)
- Perfluoroheptanoic acid (PFHpA)
- Perfluorononanoic acid (PFNA)
- Perfluorooctanoic acid (PFOA)
- Perfluoropentanesulfonic acid (PFPeS)
- Perfluorotetradecanoic acid (PFTA)
- Perfluorotridecanoic acid (PFTrDA)
- Perfluoroundecanoic acid (PFUnA)
Cities ranked by the records
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.
0of 2 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 Texas1city reports hardness · El Paso, 10.2 gpg
Hard on the USGS scale. An aesthetic measure with no federal health limit.
Hard water explainedLargest water systems
- El PasoEL PASO WATER UTILITIES · TX0710002747,168 served
- Fort BlissFORT BLISS MAIN POST AREA · TX071002028,000 served
Frequently asked
How does El Paso County tap water compare across cities?
PurityMap ranks 2 cities in El Paso 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 Fort Bliss's main water system: FORT BLISS MAIN POST AREA · PWSID TX0710020 · Purity Score 94 (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 El Paso County cities had a PFAS sample above a 2024 EPA limit?
1 of 2 El Paso County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including El Paso (PFOS 8.5 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 2.
Is there lead in El Paso County tap water?
Utilities report lead as a 90th-percentile result from home taps. 0 of 2 El Paso 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.
Does El Paso County have hard water?
Hardness is published in utility water-quality reports for 1 El Paso County city on record; the hardest is El Paso at 10.2 grains per gallon. Hardness affects scale and appliances; it is not a health finding.
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