ONTARIO, CA · Riverside County
MOUNTAIN VIEW MOBILE HOME PARK Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of January 6, 2015. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.
If you are a resident looking for your current water provider, see water systems in Riverside County, CA.
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)
- CA3301445
- System type
- Community Water System
- Population served
- 200
- Service connections
- 112
- Ownership
- privately owned
- Water source
- groundwater (wells)
MOUNTAIN VIEW MOBILE HOME PARK is one of 3,951 community water systems in California in the 500 or fewer people size category, formerly serving 200 people from groundwater.
EPA's federal records list this system as inactive in 2015; the record below is historical.
As of August 1, 2026, its federal record holds 7 entries between 1979 and 1984, all of which EPA lists as closed. Nothing has been added since 1984.
Of the 7, 4 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 inorganic chemicals, the Miscellaneous Other Rules, and the Radionuclides and Revised Rad Rule.
Violation history
Notification, Public
—No contaminant on record
June 1, 1984 – June 30, 1984
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedFluoride
June 1, 1984 – June 30, 1984
ArchivedNotification, Public
—No contaminant on record
June 1, 1983 – June 30, 1983
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
ArchivedMonitoring, Check/Repeat/Confirmation
—Fluoride
June 1, 1979 – May 31, 1983
ArchivedMonitoring, Check/Repeat/Confirmation
—Arsenic
June 1, 1979 – May 31, 1983
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| June 1, 1984 – June 30, 1984 | Notification, Public | — | — | Archived |
| June 1, 1984 – June 30, 1984 | Maximum Contaminant Level Violation, Single Sample | Fluoride | Health-based | Archived |
| June 1, 1983 – June 30, 1983 | 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 |
| June 1, 1979 – May 31, 1983 | Monitoring, Check/Repeat/Confirmation | Fluoride | — | Archived |
| June 1, 1979 – May 31, 1983 | Monitoring, Check/Repeat/Confirmation | Arsenic | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- August 2, 2007State Violation/Reminder Notice1 linked violation
- February 5, 2005State Compliance achieved1 linked violation
- November 9, 2004State Compliance achieved3 linked violations
Last known contact on file (system is inactive)
Mountain View Mobile Home Park
9094566567
ONTARIO, CA 91764