TUCSON, AZ · Santa Cruz County
SONOITA WATER UTILITY Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of September 27, 2010. 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 Santa Cruz County, AZ.
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 Arizona’s official records. Always confirm current status with Arizona before making decisions based on this information.
System facts
- System ID (PWSID)
- AZ0412010
- System type
- Community Water System
- Population served
- 0
- Service connections
- 1
- Ownership
- local government
- Water source
- groundwater (wells)
SONOITA WATER UTILITY formerly served 0 people from groundwater.
EPA's federal records list this system as inactive in 2010; the record below is historical.
As of August 1, 2026, its federal record holds 25 entries between 1987 and 2001, all of which EPA lists as closed. Nothing has been added since 2001.
All 25 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 volatile organic chemicals and inorganic chemicals.
Violation history
Monitoring, Regular
—Ethylbenzene
January 1, 2001 – December 31, 2001
ResolvedMonitoring, Regular
—Arsenic
April 30, 1990 – April 29, 1993
ArchivedMonitoring, Regular
—Barium
April 30, 1990 – April 29, 1993
ArchivedMonitoring, Regular
—Cadmium
April 30, 1990 – April 29, 1993
ArchivedMonitoring, Regular
—Chromium
April 30, 1990 – April 29, 1993
ArchivedMonitoring, Regular
—Fluoride
April 30, 1990 – April 29, 1993
ArchivedMonitoring, Regular
—Mercury
April 30, 1990 – April 29, 1993
ArchivedMonitoring, Regular
—Selenium
April 30, 1990 – April 29, 1993
ArchivedMonitoring, Regular
—DICHLOROMETHANE
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—o-Dichlorobenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—p-Dichlorobenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,2-Dichloroethane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Carbon tetrachloride
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,2-Dichloropropane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Trichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Tetrachloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—CHLOROBENZENE
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Benzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Toluene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Ethylbenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Styrene
January 1, 1987 – January 1, 1992
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2001 – December 31, 2001 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| April 30, 1990 – April 29, 1993 | Monitoring, Regular | Arsenic | — | Archived |
| April 30, 1990 – April 29, 1993 | Monitoring, Regular | Barium | — | Archived |
| April 30, 1990 – April 29, 1993 | Monitoring, Regular | Cadmium | — | Archived |
| April 30, 1990 – April 29, 1993 | Monitoring, Regular | Chromium | — | Archived |
| April 30, 1990 – April 29, 1993 | Monitoring, Regular | Fluoride | — | Archived |
| April 30, 1990 – April 29, 1993 | Monitoring, Regular | Mercury | — | Archived |
| April 30, 1990 – April 29, 1993 | Monitoring, Regular | Selenium | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | DICHLOROMETHANE | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | o-Dichlorobenzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | p-Dichlorobenzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,1-Dichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,2-Dichloroethane | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Carbon tetrachloride | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,2-Dichloropropane | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Trichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Tetrachloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | CHLOROBENZENE | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Benzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Toluene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Ethylbenzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Styrene | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- December 31, 2001State Compliance achievedgeneral compliance action — not tied to a specific violation on record
- October 23, 1992State Formal Notice of Violation issued163 linked violations
- May 1, 1979State Othergeneral compliance action — not tied to a specific violation on record
Last known contact on file (system is inactive)
SOUTHWESTERN UTILITY MGMT INC
520-623-5172
TUCSON, AZ 85754