Public water system record
Pima Utilities
Serves Chandler and Sun Lakes, Maricopa County, AZ · 20,000 people served
Federal records show 2 health-based violations and 17 monitoring/reporting issues for Pima Utilities in the last ten years. The most serious issue in this window was a resolved Revised Total Coliform Rule violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 17
Key facts
- Pima Utilities draws water from 5 wells.
- Record on file since 1998, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 3,582 unknown out of 9,968 service lines.
Check whether Pima Utilities serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Aug 1, 2024 | Resolved | Yes |
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Jun 1, 2024 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2025 | Active |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Jul 2, 2025 | Active |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2024 | Resolved |
|
E. coli
Monitoring and reporting
|
Aug 22, 2024 | Active |
|
Chlorine
Monitoring and reporting
|
Aug 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jun 1, 2024 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jul 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jul 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Apr 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Apr 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Nitrate
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
Full record since 1998
EPA's records for Pima Utilities go back to 1998. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 208 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 1 |
| 2000s | 0 | 103 |
| 2010 to October 18, 2016 | 0 | 104 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 2 | 16 |
Most recent health-based violation before October 19, 2016: Total Coliform, began September 1999, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1999 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Feb 1, 1999 | Resolved |
What the violations mean
Revised Total Coliform Rule
2 incidentsThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
Pima Utilities draws water from 5 wells.
Annual water quality report
Pima Utilities must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Arizona.
Certified drinking water labs by state EPA guidance for private wells