TUCSON, AZ · Pima County
MESQUITE WELL GROUP Water System
Inactive system
This water system is marked inactive in EPA’s federal records as of March 21, 2021. 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 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)
- AZ0410360
- System type
- Community Water System
- Population served
- 0
- Service connections
- 1
- Ownership
- public/private mix
- Water source
- groundwater (wells)
Violation history
Monitoring, Regular
—Nitrate
January 1, 2019 – December 31, 2019
ResolvedMonitoring, Regular
—Toluene
January 1, 1999 – December 31, 2001
ResolvedMonitoring, Regular
—Simazine
January 1, 1999 – December 31, 2001
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2019 – December 31, 2019 | Monitoring, Regular | Nitrate | — | Resolved |
| January 1, 1999 – December 31, 2001 | Monitoring, Regular | Toluene | — | Resolved |
| January 1, 1999 – December 31, 2001 | Monitoring, Regular | Simazine | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- September 20, 2005State Compliance achieved272 linked violations
- September 2, 2003State Compliance achieved157 linked violations
Last known contact on file (system is inactive)
PIERCE, LYNDA
520-825-3657
TUCSON, AZ 85739