TUCSON, AZ · Pima County
DESERT WATER COOP Water System
Consumer Confidence Report status
DESERT WATER COOP must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for DESERT WATER COOP.
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)
- AZ0410188
- System type
- Community Water System
- Population served
- 150
- Service connections
- 51
- Ownership
- public/private mix
- Water source
- groundwater (wells)
DESERT WATER COOP is one of 1,189 community water systems in Arizona in the 500 or fewer people size category, serving 150 people from groundwater.
As of August 1, 2026, its federal record holds 20 entries between 1981 and 2021, all of which EPA lists as closed. Nothing has been added since 2021.
Of the 20, 19 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 inorganic chemicals, volatile organic chemicals, and the Radionuclides and Revised Rad Rule.
Violation history
Consumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2021 – October 1, 2021
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
October 1, 2020 – October 29, 2020
ResolvedMonitoring, Regular
—Nitrate
April 30, 1990 – April 29, 1993
ArchivedMonitoring, Regular
—Mercury
April 30, 1990 – April 29, 1993
ArchivedMonitoring, Regular
—Fluoride
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
—Arsenic
April 30, 1990 – April 29, 1993
ArchivedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,2-Dichloropropane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Styrene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1982 – September 30, 1986
ArchivedMonitoring, Regular
—Mercury
August 1, 1982 – July 31, 1985
ArchivedMonitoring, Regular
—Barium
August 1, 1982 – July 31, 1985
ArchivedMonitoring, Regular
—Arsenic
August 1, 1982 – July 31, 1985
ArchivedMonitoring, Regular
—Fluoride
August 1, 1982 – July 31, 1985
ArchivedMonitoring, Regular
—Chromium
August 1, 1982 – July 31, 1985
ArchivedMonitoring, Regular
—Cadmium
August 1, 1982 – July 31, 1985
ArchivedMonitoring, Regular
—Selenium
August 1, 1982 – July 31, 1985
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 1981 – September 30, 1982
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 |
|---|---|---|---|---|
| July 1, 2021 – October 1, 2021 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| October 1, 2020 – October 29, 2020 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| April 30, 1990 – April 29, 1993 | Monitoring, Regular | Nitrate | — | Archived |
| April 30, 1990 – April 29, 1993 | Monitoring, Regular | Mercury | — | Archived |
| April 30, 1990 – April 29, 1993 | Monitoring, Regular | Fluoride | — | 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 | Arsenic | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,2-Dichloropropane | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Styrene | — | Archived |
| October 1, 1982 – September 30, 1986 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| August 1, 1982 – July 31, 1985 | Monitoring, Regular | Mercury | — | Archived |
| August 1, 1982 – July 31, 1985 | Monitoring, Regular | Barium | — | Archived |
| August 1, 1982 – July 31, 1985 | Monitoring, Regular | Arsenic | — | Archived |
| August 1, 1982 – July 31, 1985 | Monitoring, Regular | Fluoride | — | Archived |
| August 1, 1982 – July 31, 1985 | Monitoring, Regular | Chromium | — | Archived |
| August 1, 1982 – July 31, 1985 | Monitoring, Regular | Cadmium | — | Archived |
| August 1, 1982 – July 31, 1985 | Monitoring, Regular | Selenium | — | Archived |
| October 1, 1981 – September 30, 1982 | 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
No enforcement actions on record for this system.
Common questions
Is DESERT WATER COOP required to publish a Consumer Confidence Report?
- Yes. DESERT WATER COOP is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is DESERT WATER COOP’s next Consumer Confidence Report due?
- DESERT WATER COOP’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does DESERT WATER COOP have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for DESERT WATER COOP.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
JUHL, PAUL
520-304-8277
TUCSON, AZ 85756