Public water system record
Maricopa Consolidated DWID
Serves Maricopa, Pinal County, AZ · 928 people served
Federal records show 2 health-based violations and 16 monitoring/reporting issues for Maricopa Consolidated DWID in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 1
- Unresolved
- 0
- Archived by EPA
- 1
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 16
Key facts
- Maricopa Consolidated DWID draws water from 2 wells.
- Highest measured level in the last 10 years: Nitrate, 11 mg/L, federal limit 10 mg/L (1.1 times the limit), 2020.
- Record on file since 1980, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 243 unknown out of 286 service lines.
Check whether Maricopa Consolidated DWID 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 |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Resolved | No |
|
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
330 | Oct 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
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 REVISIONS
RPT
|
Jul 2, 2025 | Active |
|
Public Notice
OTHER
|
Dec 20, 2024 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Resolved |
|
E. coli
Monitoring and reporting
|
Mar 9, 2023 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Feb 1, 2022 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2021 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Apr 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 19, 2019 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Aug 1, 2019 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Aug 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2019 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2016 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
Full record since 1980
EPA's records for Maricopa Consolidated DWID go back to 1980. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 73 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 12 |
| 2000s | 1 | 45 |
| 2010 to October 18, 2016 | 0 | 16 |
| October 19, 2016 to 2019 | 0 | 7 |
| 2020s | 2 | 8 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 2002, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2002 | Resolved |
What the violations mean
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Nitrate
1 incidentNitrate exceeded the federal limit
High nitrate is especially dangerous for infants under 6 months and can cause blue baby syndrome
Where the water comes from
Maricopa Consolidated DWID draws water from 2 wells.
Annual water quality report
Maricopa Consolidated DWID 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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