Chlorine
Unresolved Disinfectants and Disinfection Byproducts (Stage 2) violation cited in 2025 (chlorine).
PWSID RI2000083 · GroundwaterPrivate
268 people served. 3 health-based SDWIS violations recorded in the past 5 years. 12 remain unresolved. Last cited 1 year ago.
Unresolved Disinfectants and Disinfection Byproducts (Stage 2) violation cited in 2025 (chlorine).
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (contaminant 5000).
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (contaminant 5000).
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2024 (contaminant 5000).
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
Failure to monitor as scheduled; returned to compliance
OTHER; 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; returned to compliance
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled
Failure to monitor as scheduled
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; returned to compliance
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Treatment technique violation; returned to compliance
Treatment technique violation; returned to compliance
Treatment technique violation; returned to compliance
Providence County, Rhode Island (utility's served county per SDWIS GEOGRAPHIC_AREA — city-level not yet matched): a service population of 657,984. Local disparity score for pm2.5 (fine particulate) sits well below the reference (20). Why we surface this →
Low-income
People of color
Under age 5
Over age 64
| Indicator | Disparity score | Reading |
|---|---|---|
| PM2.5 (fine particulate) | 20 | well below the reference |
| Ozone | 62 | below the reference |
| Nitrogen dioxide (NO₂) | 108 | near the reference |
| Diesel particulate | 94 | near the reference |
| Toxic releases (RSEI) | 90 | near the reference |
| Traffic proximity | 116 | moderately above the reference |
| Lead-paint risk (pre-1960 housing) | 106 | near the reference |
| Superfund site proximity | 106 | near the reference |
| RMP-facility proximity | 84 | below the reference |
| Hazardous-waste site proximity | 121 | moderately above the reference |
| Underground storage tanks | 103 | near the reference |
| NPDES wastewater proximity | 109 | near the reference |
| Drinking-water non-compliance | 1 | 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 2022-01-01 → 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.