Drinking Water Compliance OS

PARKER, AZ · La Paz County

GRAHAM WATER SERVICE-RIO VISTA Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of February 1, 1978. 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 La Paz 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)
AZ0414040
System type
Community Water System
Population served
1
Service connections
0
Ownership
privately owned
Water source
groundwater (wells)

Violation history

No violations on record for this system.

Enforcement actions

No enforcement actions on record for this system.

Last known contact on file (system is inactive)

Not on record

602-669-2201

PARKER, AZ 85344