PWSID AZ0414322
LAGUNA MOBILE HOME AND RV PARK
Community water system based in Rancho Cucamonga, CA
- Population served
- 450
- Source
- Groundwater
- Status
- Active
At a glance
3 issues above the federal safety limit
-
Active violation
Lead and Copper Rule Revisions
EPA records an open, unresolved violation against this system for Lead and Copper Rule Revisions.
EPA status: Addressed · See details below
-
Active violation
Lead and Copper Rule Revisions
EPA records an open, unresolved violation against this system for Lead and Copper Rule Revisions.
EPA status: Addressed · See details below
-
Active violation
Lead and Copper Rule Revisions
EPA records an open, unresolved violation against this system for Lead and Copper Rule Revisions.
EPA status: Addressed · See details below
Risk classification follows EPA's published values for safe drinking water, with caution and concern bands reviewed by a clinician. Past resolved violations do not influence this card. See methodology.
Lead service line inventory
No inventory data on file
We do not yet have this utility's published Lead Service Line Inventory on file. The EPA Lead and Copper Rule Improvements (LCRI) required every community water system to publish one by October 16, 2024 and to identify and replace any lead lines within 10 years. How lead enters drinking water.
Phase 1 coverage focuses on the largest NC utilities. Smaller systems will be added; in the meantime, ask your utility for their inventory or check their Consumer Confidence Report.
Lead and copper test results
The most recent measurement per contaminant from EPA's Lead and Copper Rule sampling.
Why only lead and copper, and not arsenic, nitrate, or others?
EPA's bulk SDWIS download is the only nationwide per-system sample data they publish, and it only includes the Lead and Copper Rule table. Values for other regulated contaminants (TTHMs, nitrate, arsenic, etc.) appear on this page only when they trigger a violation. For the full per-system contaminant suite, see the utility's annual Consumer Confidence Report (link further down the page).
| Contaminant | Most recent | Date | Risk |
|---|---|---|---|
| PB90 | 0 mg/L | December 31, 2024 | Below regulatory thresholds |
Data from EPA SDWIS (Lead and Copper Rule sample table) , last refreshed May 24, 2026.
Fluoride
We don't yet have this utility's specific fluoridation status from CDC's My Water's Fluoride listing. The figures below describe the broader area, not LAGUNA MOBILE HOME AND RV PARK itself.
Area context
California statewide (2020 data)
- Population on fluoridated water
- 21,879,582 of 38,051,212 (57.5%)
- Community water systems adding fluoride
- 417 of 3,057
Look up your specific utility
California shares per-system data on CDC's My Water's Fluoride site. Search by water system to see whether LAGUNA MOBILE HOME AND RV PARK adds fluoride.
Data from CDC Water Fluoridation Reporting System (state and county aggregates) , last refreshed May 16, 2026.
Compliance history
EPA-recorded violations against this system over the last 5 years.
How to read this section
Health-based violations are when a measured limit was exceeded; the measured concentration is shown alongside the EPA federal limit where SDWIS published it. Monitoring and reporting items are paperwork issues (missed sample dates, late filings) that do not themselves indicate unsafe water.
3 active health-based violations
EPA records 3 health-based violations that have not yet been resolved.
| Period start | Contaminant | What happened | Measured level | Status |
|---|---|---|---|---|
| October 17, 2024 | Lead and Copper Rule Revisions | LSL Inventory | Not reported | Addressed |
| October 17, 2024 | Lead and Copper Rule Revisions | LSL Inventory | Not reported | Addressed |
| October 17, 2024 | Lead and Copper Rule Revisions | LSL Inventory | Not reported | Addressed |
26 monitoring and reporting item s (paperwork) , 7 still open · these are not health risks
| Period start | Relates to | Item | Status |
|---|---|---|---|
| November 15, 2025 | Public Notice | Public Notification Violation for NPDWR Violation | Unaddressed |
| October 2, 2025 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | Unaddressed |
| January 1, 2025 | Revised Total Coliform Rule | Report Sample Result/Fail Monitor (RTCR) | Resolved |
| January 1, 2025 | Revised Total Coliform Rule | Report Sample Result/Fail Monitor (RTCR) | Resolved |
| January 1, 2025 | Lead and Copper Rule | Lead Consumer Notice | Resolved |
| January 1, 2025 | Lead and Copper Rule | Lead Consumer Notice | Resolved |
| December 20, 2024 | Public Notice | Public Notification Violation for NPDWR Violation | Unaddressed |
| December 1, 2024 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | Resolved |
| December 1, 2024 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | Resolved |
| November 1, 2024 | Revised Total Coliform Rule | Report Sample Result/Fail Monitor (RTCR) | Resolved |
| November 1, 2024 | Revised Total Coliform Rule | Report Sample Result/Fail Monitor (RTCR) | Resolved |
| October 17, 2024 | Lead and Copper Rule Revisions | LSL Reporting | Addressed |
| October 17, 2024 | Lead and Copper Rule Revisions | LSL Reporting | Addressed |
| October 17, 2024 | Lead and Copper Rule Revisions | LSL Reporting | Addressed |
| January 1, 2024 | Lead and Copper Rule | Lead Consumer Notice | Unaddressed |
| October 9, 2022 | Lead and Copper Rule | Lead Consumer Notice | Resolved |
| October 9, 2022 | Lead and Copper Rule | Lead Consumer Notice | Resolved |
| October 2, 2022 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | Resolved |
| October 2, 2022 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | Resolved |
| November 21, 2021 | Lead and Copper Rule | Lead Consumer Notice | Resolved |
| November 21, 2021 | Lead and Copper Rule | Lead Consumer Notice | Resolved |
| October 2, 2021 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | Resolved |
| October 2, 2021 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | Resolved |
| August 9, 2021 | Lead and Copper Rule | Lead Consumer Notice | Resolved |
| August 9, 2021 | Lead and Copper Rule | Lead Consumer Notice | Resolved |
| July 1, 2021 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | Resolved |
56 older violation s (5-10 years ago) · 3 health-based, 53 paperwork , all resolved
| Period start | Relates to | Item | Measured level | Status |
|---|---|---|---|---|
| April 29, 2021 | Public Notice | Public Notification Violation for NPDWR Violation | — | Resolved |
| April 29, 2021 | Public Notice | Public Notification Violation for NPDWR Violation | — | Resolved |
| February 1, 2021 | Revised Total Coliform Rule | Report Sample Result/Fail Monitor (RTCR) | — | Resolved |
| February 1, 2021 | Revised Total Coliform Rule | Report Sample Result/Fail Monitor (RTCR) | — | Resolved |
| December 1, 2020 | Revised Total Coliform Rule | Report Sample Result/Fail Monitor (RTCR) | — | Resolved |
| December 1, 2020 | Revised Total Coliform Rule | Report Sample Result/Fail Monitor (RTCR) | — | Resolved |
| November 1, 2020 | Revised Total Coliform Rule | Report Sample Result/Fail Monitor (RTCR) | — | Resolved |
| November 1, 2020 | Revised Total Coliform Rule | Report Sample Result/Fail Monitor (RTCR) | — | Resolved |
| October 1, 2020 | Lead and Copper Rule | Follow-up Or Routine LCR Tap M/R | — | Resolved |
| October 1, 2020 | Lead and Copper Rule | Follow-up Or Routine LCR Tap M/R | — | Resolved |
| October 1, 2020 | Lead and Copper Rule | Follow-up Or Routine LCR Tap M/R | — | Resolved |
| October 1, 2020 | Lead and Copper Rule | Follow-up Or Routine LCR Tap M/R | — | Resolved |
| July 1, 2020 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | — | Resolved |
| July 1, 2020 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | — | Resolved |
| July 1, 2020 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | — | Resolved |
| July 1, 2020 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | — | Resolved |
| March 1, 2020 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | — | Resolved |
| March 1, 2020 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | — | Resolved |
| March 1, 2020 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | — | Resolved |
| January 1, 2020 | Revised Total Coliform Rule | Report Sample Result/Fail Monitor (RTCR) | — | Resolved |
| January 1, 2020 | Revised Total Coliform Rule | Report Sample Result/Fail Monitor (RTCR) | — | Resolved |
| October 2, 2019 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | — | Resolved |
| October 2, 2019 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | — | Resolved |
| October 1, 2019 | Lead and Copper Rule | Follow-up Or Routine LCR Tap M/R | — | Resolved |
| October 1, 2019 | Lead and Copper Rule | Follow-up Or Routine LCR Tap M/R | — | Resolved |
| October 1, 2019 | Lead and Copper Rule | Follow-up Or Routine LCR Tap M/R | — | Resolved |
| July 1, 2019 | Arsenic | Monitoring, Regular | — | Resolved |
| July 1, 2019 | Arsenic | Monitoring, Regular | — | Resolved |
| July 1, 2019 | Arsenic | Monitoring, Regular | — | Resolved |
| June 1, 2019 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | — | Resolved |
| June 1, 2019 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | — | Resolved |
| June 1, 2019 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | — | Resolved |
| March 1, 2019 | E. Coli | Monitoring, Source Water (GWR) | — | Resolved |
| March 1, 2019 | E. Coli | Monitoring, Source Water (GWR) | — | Resolved |
| March 1, 2019 | E. Coli | Monitoring, Source Water (GWR) | — | Resolved |
| October 1, 2018 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | — | Resolved |
| July 1, 2018 | Arsenic | Monitoring, Regular | — | Resolved |
| July 1, 2018 | Arsenic | Monitoring, Regular | — | Resolved |
| October 1, 2017 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | — | Resolved |
| October 1, 2017 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | — | Resolved |
| October 1, 2017 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | — | Resolved |
| October 1, 2017 | Arsenic | Monitoring, Regular | — | Resolved |
| July 1, 2017 | Consumer Confidence Rule | Consumer Confidence Report Complete Failure to Report | — | Resolved |
| April 1, 2017 | Arsenic | Monitoring, Regular | — | Resolved |
| April 1, 2017 | Arsenic | Monitoring, Regular | — | Resolved |
| October 1, 2016 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | — | Resolved |
| October 1, 2016 | Revised Total Coliform Rule | Monitoring, Routine (RTCR) | — | Resolved |
| October 1, 2016 | Arsenic | Monitoring, Regular | — | Resolved |
| October 1, 2016 | Arsenic | Monitoring, Regular | — | Resolved |
| October 1, 2016 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | — | Resolved |
| October 1, 2016 | Consumer Confidence Rule | Consumer Confidence Report Inadequate Reporting | — | Resolved |
| July 1, 2016 | Consumer Confidence Rule | Consumer Confidence Report Complete Failure to Report | — | Resolved |
| July 1, 2016 | Consumer Confidence Rule | Consumer Confidence Report Complete Failure to Report | — | Resolved |
| July 1, 2016 | Arsenic | Maximum Contaminant Level Violation, Average | 0.016 MG/L
MCL 0.010 MG/L | Resolved |
| July 1, 2016 | Arsenic | Maximum Contaminant Level Violation, Average | 0.016 MG/L
MCL 0.010 MG/L | Resolved |
| July 1, 2016 | Arsenic | Maximum Contaminant Level Violation, Average | 0.016 MG/L
MCL 0.010 MG/L | Resolved |
Data from EPA SDWIS (violation records) , last refreshed May 24, 2026.
Where to see every contaminant this utility tested for
EPA's bulk SDWIS dataset gives MyTapWater.us per-system measured values for lead and copper, plus violation records for everything else. To see every regulated contaminant this utility tested for in the past year (TTHMs, HAA5, nitrate, arsenic, fluoride, chromium, etc.) with measured values, read the utility's Consumer Confidence Report (CCR).
Every community water system is required by EPA to publish a CCR annually, by July 1, listing every contaminant they sampled, the measured value, the federal limit, and any health-based exceedances. Most utilities post the report online; some mail it with your bill.
How to find LAGUNA MOBILE HOME AND RV PARK's CCR:
- Search the web for "LAGUNA MOBILE HOME AND RV PARK consumer confidence report" . The PDF is usually on the utility's own website.
- Or call the utility directly. Their phone number is in the contact section below.
Contact this utility
Public administrative contact information for this water system, as filed with the EPA. Use this to ask about your service line, request your home's lead status, or report a water quality issue.
- Administrator
- THOMAS, JEFF
- Phone
- 909-481-9300
- Mailing address
- C/O 6D INVESTMENTSPO BOX 9241RANCHO CUCAMONGA, CA 91701
Where this page's data comes from
Bundle released 2026-Q2, regenerated May 24, 2026. Each section above also shows its own source date so you can tell at a glance how fresh that part of the page is.
- EPA SDWIS bulk download — last refreshed May 24, 2026 (system info, violations, lead and copper samples).
- CDC Water Fluoridation Reporting System — last refreshed May 16, 2026 (state and county fluoridation aggregates).
Every value on this page is cross-verified before publication; read our methodology for the verification steps and corrections process.