Chlorine
Unresolved Disinfectants and Disinfection Byproducts (Stage 2) violation cited in 2023 (chlorine).
PWSID TX0710067 · GroundwaterPrivate
224 people served. 1 health-based SDWIS violation recorded in the past 5 years. 3 remain unresolved. Last cited 1 year ago.
Unresolved Disinfectants and Disinfection Byproducts (Stage 2) violation cited in 2023 (chlorine).
Unresolved Disinfectants and Disinfection Byproducts (Stage 2) violation cited in 2023 (chlorine).
Unresolved Disinfectants and Disinfection Byproducts (Stage 2) violation cited in 2023 (chlorine).
Phase I/II/V Inorganic Chemical Rules health-based violation cited in 2024 (contaminant 5200).
Health-based violations exceed an MCL or treatment-technique standard. Monitoring violations are reporting failures with no measured exceedance — they tell you the system isn't fully transparent, not that the water is unsafe today.
Failure to monitor as scheduled; returned to compliance
OTHER; returned to compliance
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled; returned to compliance
Treatment technique violation; returned to compliance
Reporting failure; returned to compliance
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled; returned to compliance
Monitoring failure; returned to compliance
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled; returned to compliance
El Paso, Texas (Census place; block-group disparity scores aggregated by centroid containment): a service population of 677,181. Local disparity score for pm2.5 (fine particulate) sits near the reference (99). Why we surface this →
Low-income
People of color
Under age 5
Over age 64
| Indicator | Disparity score | Reading |
|---|---|---|
| PM2.5 (fine particulate) | 99 | near the reference |
| Ozone | 227 | severely above the reference burden |
| Nitrogen dioxide (NO₂) | 214 | severely above the reference burden |
| Diesel particulate | 119 | moderately above the reference |
| Toxic releases (RSEI) | 63 | below the reference |
| Traffic proximity | 143 | moderately above the reference |
| Lead-paint risk (pre-1960 housing) | 87 | below the reference |
| Superfund site proximity | 0 | well below the reference |
| RMP-facility proximity | 192 | well above the reference burden |
| Hazardous-waste site proximity | 101 | near the reference |
| Underground storage tanks | 137 | moderately above the reference |
| NPDES wastewater proximity | 68 | below the reference |
| Drinking-water non-compliance | 2 | well below the reference |
Source: Census ACS 2018-2022 (5-year) + USEPA-clone EJ blockgroup stats (raw indicators + EJ disparity mirror).
Source. EPA Safe Drinking Water Information System · retrieved 2026-05-07. Reporting period 2020-01-01 → 2026-05-07.
What this is not. SDWIS records compliance against federal MCLs — not a direct readout of tap-water concentrations. Active health-based violations are not the same as a current crisis; we link to the EPA record so you can verify return-to-compliance status before forming a conclusion.