Contaminant 7500
Unresolved Volatile Organic Chemical Rule violation cited in 2024 (contaminant 7500).
PWSID OH5800712 · GroundwaterPrivate
70 people served. 4 health-based SDWIS violations recorded in the past 5 years. 11 remain unresolved. Last cited 1 year ago.
Unresolved Volatile Organic Chemical Rule violation cited in 2024 (contaminant 7500).
Unresolved Phase I/II/V Synthetic Organic Chemical Rules violation cited in 2024 (contaminant 7000).
Unresolved Revised Total Coliform Rule violation cited in 2023 (contaminant 8000).
Unresolved Revised Total Coliform Rule violation cited in 2023 (contaminant 8000).
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.
Monitoring failure; returned to compliance
OTHER
OTHER
Maximum contaminant level exceeded; returned to compliance
Maximum contaminant level exceeded
Maximum contaminant level exceeded; returned to compliance
Monitoring failure; returned to compliance
Monitoring failure
Monitoring failure; returned to compliance
Monitoring failure; returned to compliance
Treatment technique violation
Failure to monitor as scheduled; returned to compliance
Failure to monitor as scheduled
Failure to monitor as scheduled
OTHER
OTHER
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
Monitoring failure; returned to compliance
OTHER
Failure to monitor as scheduled
Zanesville, Ohio (Census place; block-group disparity scores aggregated by centroid containment): a service population of 24,772. Local disparity score for pm2.5 (fine particulate) sits well below the reference (44). Why we surface this →
Low-income
People of color
Under age 5
Over age 64
| Indicator | Disparity score | Reading |
|---|---|---|
| PM2.5 (fine particulate) | 44 | well below the reference |
| Ozone | 82 | below the reference |
| Nitrogen dioxide (NO₂) | 78 | below the reference |
| Diesel particulate | 91 | near the reference |
| Toxic releases (RSEI) | 40 | well below the reference |
| Traffic proximity | 60 | below the reference |
| Lead-paint risk (pre-1960 housing) | 119 | moderately above the reference |
| Superfund site proximity | 115 | moderately above the reference |
| RMP-facility proximity | 118 | moderately above the reference |
| Hazardous-waste site proximity | 46 | well below the reference |
| Underground storage tanks | 117 | moderately above the reference |
| NPDES wastewater proximity | 89 | below the reference |
| Drinking-water non-compliance | 11 | 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.