AJO, AZ · Pima County
WHY DWID Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
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)
- AZ0410118
- System type
- Community Water System
- Population served
- 400
- Service connections
- 113
- Ownership
- privately owned
- Water source
- groundwater (wells)
Violation history
Monitoring, Regular
—DICHLOROMETHANE
January 1, 2018 – December 31, 2018
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
January 1, 2018 – March 31, 2018
ResolvedMaximum Contaminant Level Violation, Average
Health-basedArsenic
July 1, 2017 – September 30, 2017
ResolvedMonitoring, Regular
—1,2-Dichloropropane
January 1, 2013 – March 31, 2013
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
October 1, 2012 – December 31, 2012
ResolvedMonitoring, Regular
—1,2-Dichloroethane
July 1, 2012 – September 30, 2012
ResolvedMonitoring, Regular
—1,2-Dichloroethane
April 1, 2012 – June 30, 2012
ResolvedMonitoring, Regular
—Carbon tetrachloride
January 1, 2012 – March 31, 2012
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
September 1, 2005 – September 30, 2005
ResolvedMonitoring, Check/Repeat/Confirmation
—Arsenic
September 30, 1990 – September 29, 1993
ArchivedMonitoring, Check/Repeat/Confirmation
—Arsenic
September 30, 1990 – September 29, 1993
ArchivedMonitoring, Regular
—Nitrate
October 1, 1987 – September 29, 1990
ArchivedMonitoring, Regular
—Arsenic
October 1, 1987 – September 29, 1990
ArchivedMonitoring, Regular
—Fluoride
October 1, 1987 – September 29, 1990
ArchivedMonitoring, Regular
—Mercury
October 1, 1987 – September 29, 1990
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1987 – December 31, 1987
ArchivedMonitoring, Regular
—Cadmium
October 1, 1987 – September 29, 1990
ArchivedMonitoring, Regular
—Selenium
October 1, 1987 – September 29, 1990
ArchivedMonitoring, Regular
—Chromium
October 1, 1987 – September 29, 1990
ArchivedMonitoring, Regular
—Barium
October 1, 1987 – September 29, 1990
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedFluoride
April 26, 1983 – April 25, 1984
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, 2018 – December 31, 2018 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| January 1, 2018 – March 31, 2018 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| July 1, 2017 – September 30, 2017 | Maximum Contaminant Level Violation, Average | Arsenic | Health-based | Resolved |
| January 1, 2013 – March 31, 2013 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| October 1, 2012 – December 31, 2012 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| July 1, 2012 – September 30, 2012 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| April 1, 2012 – June 30, 2012 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| January 1, 2012 – March 31, 2012 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| September 1, 2005 – September 30, 2005 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| September 30, 1990 – September 29, 1993 | Monitoring, Check/Repeat/Confirmation | Arsenic | — | Archived |
| September 30, 1990 – September 29, 1993 | Monitoring, Check/Repeat/Confirmation | Arsenic | — | Archived |
| October 1, 1987 – September 29, 1990 | Monitoring, Regular | Nitrate | — | Archived |
| October 1, 1987 – September 29, 1990 | Monitoring, Regular | Arsenic | — | Archived |
| October 1, 1987 – September 29, 1990 | Monitoring, Regular | Fluoride | — | Archived |
| October 1, 1987 – September 29, 1990 | Monitoring, Regular | Mercury | — | Archived |
| October 1, 1987 – December 31, 1987 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| October 1, 1987 – September 29, 1990 | Monitoring, Regular | Cadmium | — | Archived |
| October 1, 1987 – September 29, 1990 | Monitoring, Regular | Selenium | — | Archived |
| October 1, 1987 – September 29, 1990 | Monitoring, Regular | Chromium | — | Archived |
| October 1, 1987 – September 29, 1990 | Monitoring, Regular | Barium | — | Archived |
| April 26, 1983 – April 25, 1984 | Maximum Contaminant Level Violation, Single Sample | Fluoride | Health-based | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- April 16, 2013State Violation/Reminder Notice75 linked violations
- January 25, 1980State Othergeneral compliance action — not tied to a specific violation on record
Contact
HADLEY, BILL
520-387-5460
AJO, AZ 85321