Beryllium
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (beryllium).
PWSID CA5700555 · GroundwaterPrivate
44 people served. 30 health-based SDWIS violations recorded in the past 5 years. 33 remain unresolved. Last cited 1 year ago.
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (beryllium).
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (beryllium).
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (beryllium).
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2024 (beryllium).
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.
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Failure to monitor as scheduled
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Failure to monitor as scheduled
Maximum contaminant level exceeded
Failure to monitor as scheduled
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Maximum contaminant level exceeded
Monitoring failure; returned to compliance
Monitoring failure; returned to compliance
Sacramento, California (Census place; block-group disparity scores aggregated by centroid containment): a service population of 523,600. Local disparity score for pm2.5 (fine particulate) sits well above the reference burden (182). Why we surface this →
Low-income
People of color
Under age 5
Over age 64
| Indicator | Disparity score | Reading |
|---|---|---|
| PM2.5 (fine particulate) | 182 | well above the reference burden |
| Ozone | 163 | well above the reference burden |
| Nitrogen dioxide (NO₂) | 123 | moderately above the reference |
| Diesel particulate | 142 | moderately above the reference |
| Toxic releases (RSEI) | 32 | well below the reference |
| Traffic proximity | 162 | well above the reference burden |
| Lead-paint risk (pre-1960 housing) | 77 | below the reference |
| Superfund site proximity | 126 | moderately above the reference |
| RMP-facility proximity | 156 | well above the reference burden |
| Hazardous-waste site proximity | 162 | well above the reference burden |
| Underground storage tanks | 0 | well below the reference |
| NPDES wastewater proximity | 171 | well above the reference burden |
| 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 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.