AVONDALE, AZ · Maricopa County
RIO VISTA WATER CO Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of May 1, 1990. 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 Maricopa County, AZ.
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 Arizona’s official records. Always confirm current status with Arizona before making decisions based on this information.
System facts
- System ID (PWSID)
- AZ0407063
- System type
- Community Water System
- Population served
- 450
- Service connections
- 140
- Ownership
- privately owned
- Water source
- groundwater (wells)
Violation history
Maximum Contaminant Level Violation, Single Sample
Health-basedNitrate
July 1, 1986 – July 31, 1986
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
July 1, 1980 – June 30, 1984
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 1986 – July 31, 1986 | Maximum Contaminant Level Violation, Single Sample | Nitrate | Health-based | Archived |
| July 1, 1980 – June 30, 1984 | 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
- September 30, 1980State Othergeneral compliance action — not tied to a specific violation on record
Last known contact on file (system is inactive)
Not on record
Phone not on record
AVONDALE, AZ 85323