TUCSON, AZ · Pima County
LOS RANCHITOS WELL Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of January 25, 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 Pima 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)
- AZ0420488
- System type
- Community Water System
- Population served
- 119
- Service connections
- 45
- Ownership
- public/private mix
- Water source
- groundwater (wells)
LOS RANCHITOS WELL is one of 1,189 community water systems in Arizona in the 500 or fewer people size category, formerly serving 119 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 3 entries between 1980 and 1989, all of which EPA lists as closed. Nothing has been added since 1989.
All 3 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 the Radionuclides and Revised Rad Rule.
Violation history
Monitoring, Regular
—Gross Alpha, Excl. Radon and U
July 1, 1989 – September 30, 1989
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
March 23, 1989 – March 22, 1993
ResolvedMonitoring, 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)Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 1989 – September 30, 1989 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| March 23, 1989 – March 22, 1993 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Resolved |
| 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)Resolved addressed and confirmed by the state
Enforcement actions
- October 31, 2008State Violation/Reminder Notice40 linked violations
- November 10, 2003State Compliance achieved1 linked violation
- September 30, 1980State Othergeneral compliance action — not tied to a specific violation on record
Last known contact on file (system is inactive)
KRAUSE, SHERI
520-413-0922
TUCSON, AZ 85706