Desert Oasis RV Park
PWSID: AZ0407364
This system has no unresolved violations. The most recent violation on record was 2018-07-01.
This system has more violations on record than 92% of water systems in Arizona.
Violation trend: 0.0 per year over the last 5 years, down from 0.8 per year in the previous 5.
System Details
| Population Served | 40 |
| Service Connections | 20 |
| Water Source | Groundwater |
| System Type | Transient Non-Community |
| Owner | Public/Private |
| Status | Active |
| City | Tempe |
| EPA ZIP on File | 85284 |
Areas Served
- Arlington, Maricopa County
Violation History (125 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|---|---|---|---|
| 1040 | MCL Measured: 13.00 MG/L (limit: 10.00 MG/L) | 2018-07-01 | Yes | Returned to Compliance |
| 1040 | MCL Measured: 13.00 MG/L (limit: 10.00 MG/L) | 2018-07-01 | Yes | Returned to Compliance |
| 1040 | MCL Measured: 13.00 MG/L (limit: 10.00 MG/L) | 2018-01-01 | Yes | Returned to Compliance |
| 1040 | MCL Measured: 13.00 MG/L (limit: 10.00 MG/L) | 2018-01-01 | Yes | Returned to Compliance |
| 4000 | MR Measured: 0 mg/L | 1989-12-19 | Major | I |
| 1915 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1095 | MR Measured: 0 mg/L (EPA limit: 0.05 mg/L) | 1988-01-31 | Major | I |
| 1930 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1925 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1052 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1020 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1017 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1045 | MR Measured: 0 mg/L (EPA limit: 10 mg/L) | 1988-01-31 | Major | I |
| 1055 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1015 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1022 | MR Measured: 0 mg/L (EPA limit: 0.002 mg/L) | 1988-01-31 | Major | I |
| 1016 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1010 | MR Measured: 0 mg/L (EPA limit: 0.006 mg/L) | 1988-01-31 | Major | I |
| 1035 | MR Measured: 0 mg/L (EPA limit: 0.002 mg/L) | 1988-01-31 | Major | I |
| 1025 | MR Measured: 0 mg/L (EPA limit: 0.005 mg/L) | 1988-01-31 | Major | I |
| 1028 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1030 | MR Measured: 0 mg/L (EPA limit: 0.015 mg/L) | 1988-01-31 | Major | I |
| 1050 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1005 | MR Measured: 0 mg/L (EPA limit: 0.010 mg/L) | 1988-01-31 | Major | I |
| 1040 | MR Measured: 0 mg/L (EPA limit: 2 mg/L) | 1988-01-31 | Major | I |
| 1032 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1031 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1927 | MR Measured: 0 mg/L | 1988-01-31 | Major | I |
| 1035 | MR Measured: 0 mg/L (EPA limit: 0.002 mg/L) | 1987-10-01 | Major | I |
| 1010 | MR Measured: 0 mg/L (EPA limit: 0.006 mg/L) | 1987-10-01 | Major | I |
| 1015 | MR Measured: 0 mg/L | 1987-10-01 | Major | I |
| 1020 | MR Measured: 0 mg/L | 1987-10-01 | Major | I |
| 1025 | MR Measured: 0 mg/L (EPA limit: 0.005 mg/L) | 1987-10-01 | Major | I |
| 1030 | MR Measured: 0 mg/L (EPA limit: 0.015 mg/L) | 1987-10-01 | Major | I |
| 1040 | MR Measured: 0 mg/L (EPA limit: 2 mg/L) | 1987-10-01 | Major | I |
| 1045 | MR Measured: 0 mg/L (EPA limit: 10 mg/L) | 1987-10-01 | Major | I |
| 1050 | MR Measured: 0 mg/L | 1987-10-01 | Major | I |
| 2210 | MR Measured: 0 mg/L | 1987-01-01 | Major | I |
| 2212 | MR Measured: 0 mg/L | 1987-01-01 | Major | I |
| 2214 | MR Measured: 0 mg/L | 1987-01-01 | Major | I |
| 2216 | MR Measured: 0 mg/L | 1987-01-01 | Major | I |
| 2218 | MR Measured: 0 mg/L | 1987-01-01 | Major | I |
| 2413 | MR Measured: 0 mg/L | 1987-01-01 | Major | I |
| 2380 | MR Measured: 0 mg/L | 1987-01-01 | Major | I |
| 2408 | MR Measured: 0 mg/L | 1987-01-01 | Major | I |
| 2410 | MR Measured: 0 mg/L | 1987-01-01 | Major | I |
| 2412 | MR Measured: 0 mg/L | 1987-01-01 | Major | I |
| 2414 | MR Measured: 0 mg/L | 1987-01-01 | Major | I |
| 2416 | MR Measured: 0 mg/L | 1987-01-01 | Major | I |
| 2941 | MR Measured: 0 mg/L | 1987-01-01 | Major | I |
Showing 50 of 125 historical violations.
Understanding This Water System's Record
Desert Oasis RV Park is a transient non-community water system that draws from groundwater sources and serves a population of 40 in Tempe, Arizona. This page shows its complete compliance history as reported to the EPA's Safe Drinking Water Information System (SDWIS), the federal database that tracks every public water system in the United States.
What Do These Violations Mean?
Health-based violations mean the system exceeded an EPA maximum contaminant level (MCL) or failed to provide required treatment. These indicate potential health risks from contaminants like lead, arsenic, bacteria, nitrates, or disinfection byproducts. Non-health-based violations involve monitoring, reporting, or procedural requirements — the system missed a testing deadline or failed to notify customers, but contaminant levels were not necessarily unsafe.
What Should You Do?
Your water utility is required to publish an annual Consumer Confidence Report (CCR) that details test results and any violations. If your system has active health-based violations, consider a certified water filter rated for the specific contaminants involved. The contaminant guides on this site explain health risks and filter options for common pollutants. For the most current results, contact your water utility directly — EPA data can lag weeks or months behind real-time testing.