MARICOPA, AZ · Pima County
GW OCOTILLO WATER - DIAMOND BELL Water System
Consumer Confidence Report status
GW OCOTILLO WATER - DIAMOND BELL 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 GW OCOTILLO WATER - DIAMOND BELL.
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)
- AZ0410159
- System type
- Community Water System
- Population served
- 706
- Service connections
- 252
- Ownership
- local government
- Water source
- groundwater (wells)
GW OCOTILLO WATER - DIAMOND BELL is one of 272 community water systems in Arizona in the 501 to 3,300 people size category, serving 706 people from groundwater.
As of August 1, 2026, its federal record holds 8 entries between 1985 and 1988, all of which EPA lists as closed. Nothing has been added since 1988.
All 8 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.
Violation history
Monitoring, Regular
—Barium
July 1, 1988 – September 30, 1988
ArchivedMonitoring, Regular
—Chromium
July 1, 1988 – September 30, 1988
ArchivedMonitoring, Regular
—Fluoride
July 1, 1988 – September 30, 1988
ArchivedMonitoring, Regular
—Nitrate
July 1, 1988 – September 30, 1988
ArchivedMonitoring, Regular
—Selenium
July 1, 1988 – September 30, 1988
ArchivedMonitoring, Regular
—Mercury
July 1, 1988 – September 30, 1988
ArchivedMonitoring, Regular
—Cadmium
July 1, 1988 – September 30, 1988
ArchivedMonitoring, Regular
—Arsenic
September 18, 1985 – September 16, 1988
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 1988 – September 30, 1988 | Monitoring, Regular | Barium | — | Archived |
| July 1, 1988 – September 30, 1988 | Monitoring, Regular | Chromium | — | Archived |
| July 1, 1988 – September 30, 1988 | Monitoring, Regular | Fluoride | — | Archived |
| July 1, 1988 – September 30, 1988 | Monitoring, Regular | Nitrate | — | Archived |
| July 1, 1988 – September 30, 1988 | Monitoring, Regular | Selenium | — | Archived |
| July 1, 1988 – September 30, 1988 | Monitoring, Regular | Mercury | — | Archived |
| July 1, 1988 – September 30, 1988 | Monitoring, Regular | Cadmium | — | Archived |
| September 18, 1985 – September 16, 1988 | Monitoring, Regular | Arsenic | — | Archived |
Archived 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 GW OCOTILLO WATER - DIAMOND BELL required to publish a Consumer Confidence Report?
- Yes. GW OCOTILLO WATER - DIAMOND BELL 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 GW OCOTILLO WATER - DIAMOND BELL’s next Consumer Confidence Report due?
- GW OCOTILLO WATER - DIAMOND BELL’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does GW OCOTILLO WATER - DIAMOND BELL have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for GW OCOTILLO WATER - DIAMOND BELL.
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
ARMIJO, SUSAN
480-328-9281
MARICOPA, AZ 85138