MOUNTAIN PASS, CA · San Bernardino County

MP MINE OPERATIONS LLC Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.

System facts

System ID (PWSID): CA3600172
System type: Community Water System
Population served: 626
Service connections: 9
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Fluoride
October 30, 1980 – April 29, 1981
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
October 30, 1980 – October 29, 1981
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Fluoride
July 30, 1980 – October 29, 1980
Archived

Archived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 1981 – September 30, 1982	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
October 30, 1980 – April 29, 1981	Maximum Contaminant Level Violation, Single Sample	Fluoride	Health-based	Archived
October 30, 1980 – October 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
July 30, 1980 – October 29, 1980	Maximum Contaminant Level Violation, Single Sample	Fluoride	Health-based	Archived

Archived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

No enforcement actions on record for this system.

Contact

ESPINOZA, JOHN

702-468-5030

MOUNTAIN PASS, CA 92366