California · drinking water · SDWIS through latest publish

Martinez Apartments Water Quality — French Camp, California

PWSID CA3900751 · GroundwaterPrivate

26 people served. 41 health-based SDWIS violations recorded in the past 5 years. 41 remain unresolved. Last cited 1 year ago.

ALL SDWIS VIOLATIONS · 20232026 (annual count)
Bar chart of annual values from 2023 to 2026, in violations. Most recent year (2026): 0 violations.19 violations'23'24'25'260 violations
Anomaly engine

Active signals

UNRESOLVED VIOLATION · SDWIS VIOLATION

Beryllium

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (beryllium).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Arsenic

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (arsenic).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Arsenic

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (arsenic).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Beryllium

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (beryllium).

EPA SDWIS record

Most-cited contaminants

What This Utility Gets Cited For

  • Beryllium21 citations
  • Arsenic20 citations
Violation history

What's On The SDWIS Record

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.

HEALTH-BASED · BERYLLIUMUNRESOLVED

2025 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · ARSENICUNRESOLVED

2025 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · ARSENICUNRESOLVED

2025 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · BERYLLIUMUNRESOLVED

2025 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · BERYLLIUMUNRESOLVED

2025 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · ARSENICUNRESOLVED

2025 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · BERYLLIUMUNRESOLVED

2025 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · ARSENICUNRESOLVED

2025 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · BERYLLIUMUNRESOLVED

2024 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · BERYLLIUMUNRESOLVED

2024 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · BERYLLIUMUNRESOLVED

2024 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · BERYLLIUMUNRESOLVED

2024 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · BERYLLIUMUNRESOLVED

2024 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · ARSENICUNRESOLVED

2024 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · ARSENICUNRESOLVED

2024 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · BERYLLIUMUNRESOLVED

2024 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · BERYLLIUMUNRESOLVED

2024 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · ARSENICUNRESOLVED

2024 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · ARSENICUNRESOLVED

2024 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · ARSENICUNRESOLVED

2024 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · BERYLLIUMUNRESOLVED

2024 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · BERYLLIUMUNRESOLVED

2024 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · ARSENICUNRESOLVED

2024 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · ARSENICUNRESOLVED

2024 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · ARSENICUNRESOLVED

2024 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · ARSENICUNRESOLVED

2024 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · ARSENICUNRESOLVED

2024 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · BERYLLIUMUNRESOLVED

2023 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · BERYLLIUMUNRESOLVED

2023 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · BERYLLIUMUNRESOLVED

2023 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · BERYLLIUMUNRESOLVED

2023 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · ARSENICUNRESOLVED

2023 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · ARSENICUNRESOLVED

2023 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · BERYLLIUMUNRESOLVED

2023 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · BERYLLIUMUNRESOLVED

2023 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · ARSENICUNRESOLVED

2023 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · ARSENICUNRESOLVED

2023 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · BERYLLIUMUNRESOLVED

2023 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · BERYLLIUMUNRESOLVED

2023 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1040

HEALTH-BASED · ARSENICUNRESOLVED

2023 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

HEALTH-BASED · ARSENICUNRESOLVED

2023 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Maximum contaminant level exceeded

CONTAMINANT CODE 1005

Equity context · ACS 2018-2022 · USEPA-clone EJ disparity

Who Drinks This Water

French Camp, California (Census place; block-group disparity scores aggregated by centroid containment): a service population of 3,860. Local disparity score for pm2.5 (fine particulate) sits severely above the reference burden (217). Why we surface this →

POPULATION SHARE
24.6%

Low-income

POPULATION SHARE
81.3%

People of color

POPULATION SHARE
3.4%

Under age 5

POPULATION SHARE
8.4%

Over age 64

NATIONAL PERCENTILE · vs all US block groups (population-weighted; ranked against the national EJScreen indicator distribution)

  • PM2.5 (fine particulate)Health riskFine inhalable particles 2.5 micrometers or smaller. They travel deep into the lungs and into the bloodstream — linked to asthma, heart disease, stroke, and premature death.98in the highest 5% nationally
  • OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.83in the highest 20% nationally
  • Nitrogen dioxide (NO₂)Health riskA tailpipe and combustion gas. Concentrates near busy roads and industrial sites; raises risk of airway inflammation, asthma, and lower respiratory infections in children.55near the national median
  • Diesel particulateHealth riskSoot from diesel engines (trucks, trains, ports, construction). EPA classifies it as a likely human carcinogen and a major driver of childhood asthma near freight corridors.84in the highest 20% nationally
  • Toxic releases (RSEI)Health riskEPA's Risk-Screening Environmental Indicators score — weights TRI chemical releases by toxicity, where they go, and how many people are nearby. Higher means greater modeled cancer and chronic-health risk.39below the national median
  • Traffic proximityHealth riskPopulation-weighted distance to high-volume roads. Living close to heavy traffic raises exposure to PM2.5, NO₂, and diesel exhaust — and the cardiovascular and asthma risks that follow.78above the national median
  • Lead-paint risk (pre-1960 housing)Health riskShare of housing built before 1960, when lead-based paint was common. Dust from deteriorating paint is the leading cause of childhood lead poisoning, which permanently impairs cognitive development.74above the national median
  • Superfund site proximityHealth riskPopulation-weighted distance to NPL Superfund sites — the most contaminated waste sites in the country. Nearby groundwater, soil, and air can carry industrial solvents, metals, and other long-lived contaminants.83in the highest 20% nationally
  • RMP-facility proximityHealth riskDistance to facilities holding chemicals at quantities large enough to require an EPA Risk Management Plan (refineries, fertilizer plants, etc.). These pose acute exposure risk during accidental releases.97in the highest 5% nationally
  • Hazardous-waste site proximityHealth riskDistance to RCRA hazardous-waste handlers (treatment, storage, disposal facilities). Indicates potential exposure to industrial chemicals in air, soil, and groundwater.82in the highest 20% nationally
  • Underground storage tanksHealth riskDensity of underground tanks (gasoline, heating oil, industrial fluids). Leaking tanks are a leading source of benzene and other volatile organic compounds in groundwater drinking-water supplies.28below the national median
  • NPDES wastewater proximityHealth riskDistance to permitted industrial wastewater dischargers. Closer proximity raises exposure to pollutants released into surface waters used for fishing, recreation, and downstream drinking-water intakes.84in the highest 20% nationally
  • Drinking-water non-complianceHealth riskEPA score for public water systems with health-based Safe Drinking Water Act violations. Higher means more residents on systems that recently exceeded safe limits for contaminants like lead, arsenic, or nitrate.76above the national median
EJ disparity scores · service-area block groups (100 = national reference; higher = greater disparate burden)
IndicatorDisparity scoreReading
PM2.5 (fine particulate)217severely above the reference burden
Ozone195well above the reference burden
Nitrogen dioxide (NO₂)120moderately above the reference
Diesel particulate186well above the reference burden
Toxic releases (RSEI)86below the reference
Traffic proximity170well above the reference burden
Lead-paint risk (pre-1960 housing)148moderately above the reference
Superfund site proximity181well above the reference burden
RMP-facility proximity212severely above the reference burden
Hazardous-waste site proximity179well above the reference burden
Underground storage tanks0well below the reference
NPDES wastewater proximity184well above the reference burden
Drinking-water non-compliance0well 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 2023-01-012026-05-07.

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.