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TWAIN HARTE VALLEY MWC

P.O. Box 611, TWAIN HARTE, CA, 95383 · 209-770-6265

Legal business name: GAST, SEAN

On the EPA record

Population served: 202
Service connections: 106
System type: Community water system
Primary water source: Surface water
Owner type: Private

Drinking-water violations on record (30)

EPA's SDWIS records each violation as codes, not sentences. Each one below is shown with EPA's own published description of that violation type and contaminant. Health-based violations — a contaminant limit or treatment requirement not met — are marked apart from monitoring and reporting failures.

2025-07-02 — Reporting Violation

category RPT · monitoring & reporting

Notification, Known or Potential LSL — LEAD AND COPPER RULE REVISIONS

2025-04-01 — Monitoring Violation

category MON · monitoring & reporting

Monitoring, Lab Certification/Method Error (RTCR) — Revised Total Coliform Rule

Recorded as corrected on 2025-05-31.

2024-10-17 — Reporting Violation

category RPT · monitoring & reporting

LSL Reporting — LEAD AND COPPER RULE REVISIONS

2024-10-17 — Treatment Technique Violation

category TT · health-based

LSL Inventory — LEAD AND COPPER RULE REVISIONS

1984-09-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1984-09-30.

1984-08-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1984-08-31.

1984-07-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1984-07-31.

1984-06-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1984-06-30.

1984-05-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1984-05-31.

1984-04-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1984-04-30.

1984-03-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1984-03-31.

1984-02-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1984-02-29.

1984-01-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1984-01-31.

1983-12-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1983-12-31.

1983-11-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1983-11-30.

1983-10-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1983-10-31.

1983-09-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1983-09-30.

1983-08-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1983-08-31.

1983-07-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1983-07-31.

1983-06-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1983-06-30.

1983-05-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1983-05-31.

1983-04-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1983-04-30.

1983-03-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1983-03-31.

1983-02-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1983-02-28.

1983-01-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1983-01-31.

1982-12-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1982-12-31.

1982-11-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1982-11-30.

1982-10-01 — Other Violation

category Other · monitoring & reporting

Notification, Public

Recorded as corrected on 1982-10-31.

1981-10-01 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Gross Alpha, Excl. Radon and U

Recorded as corrected on 1982-09-30.

1980-10-30 — Monitoring and Reporting

category MR · monitoring & reporting

Monitoring, Regular — Gross Alpha, Excl. Radon and U

Recorded as corrected on 1981-10-29.

Source: US Environmental Protection Agency (EPA) · EPA public water system ID (PWSID) CA5500080