EL MONTE, CA · Los Angeles County
DEL RIO MUTUAL Water System
Consumer Confidence Report status
DEL RIO MUTUAL must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for DEL RIO MUTUAL.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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)
- CA1900130
- System type
- Community Water System
- Population served
- 700
- Service connections
- 133
- Ownership
- privately owned
- Water source
- groundwater (wells)
DEL RIO MUTUAL is one of 728 community water systems in California in the 501 to 3,300 people size category, serving 700 people from groundwater.
As of August 1, 2026, its federal record holds 5 entries between 1980 and 1984, all of which EPA lists as closed. Nothing has been added since 1984.
Of the 5, 2 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Miscellaneous Other Rules and the Radionuclides and Revised Rad Rule.
Violation history
Notification, Public
—No contaminant on record
September 1, 1984 – September 30, 1984
ArchivedNotification, Public
—No contaminant on record
August 1, 1984 – August 31, 1984
ArchivedNotification, Public
—No contaminant on record
July 1, 1984 – July 31, 1984
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 30, 1980 – October 29, 1981
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| September 1, 1984 – September 30, 1984 | Notification, Public | — | — | Archived |
| August 1, 1984 – August 31, 1984 | Notification, Public | — | — | Archived |
| July 1, 1984 – July 31, 1984 | Notification, Public | — | — | Archived |
| October 1, 1981 – September 30, 1982 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| October 30, 1980 – October 29, 1981 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | 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.
Common questions
Is DEL RIO MUTUAL required to publish a Consumer Confidence Report?
- Yes. DEL RIO MUTUAL is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is DEL RIO MUTUAL’s next Consumer Confidence Report due?
- DEL RIO MUTUAL’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does DEL RIO MUTUAL have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for DEL RIO MUTUAL.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
LUNA, MANUEL
626-433-3371
EL MONTE, CA 91732