DOUGLAS, AZ · Cochise County
LA COSTA WATER USERS ASSOC 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)
- AZ0402041
- System type
- Community Water System
- Population served
- 30
- Service connections
- 16
- Ownership
- public/private mix
- Water source
- groundwater (wells)
Violation history
Monitoring, Source Water (GWR)
—E. COLI
June 3, 2021 – June 8, 2021
ResolvedMonitoring, Regular
—Nitrate
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
—Gross Alpha, Excl. Radon and U
January 1, 1988 – March 31, 1988
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 |
|---|---|---|---|---|
| June 3, 2021 – June 8, 2021 | Monitoring, Source Water (GWR) | E. COLI | — | Resolved |
| April 30, 1990 – April 29, 1993 | Monitoring, Regular | Nitrate | — | 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, 1988 – March 31, 1988 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- November 17, 2014State Violation/Reminder Notice188 linked violations
- January 12, 2003State Compliance achieved196 linked violations
Contact
LEON, ROSANNA
520-234-7121
DOUGLAS, AZ 85607