Public water system · AZ0411039
ActiveApache Junction Water District
At a glance
Apache Junction Water District (PWSID AZ0411039) is an active community water system in Pinal County, Arizona. It reports serving 15,610 people through 4,200 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in September 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
15,610
Service connections
4,200
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Apache Junction Water District compare with other water systems in Pinal County?
By EPA's size categories, Apache Junction Water District is a large system (10,001 to 100,000 people). Pinal County has 94 active public water systems. Its population served is about 190% above the county average of 5,375 people per system, and accounts for 3.1% of the 505,241 people reported by systems filed under the county. Across Arizona, the 1,769 active systems average 4,369 people each. Nationally, the average active community water system reports serving 6,703 people, so Apache Junction Water District is about 133% above that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Arizona has 936 active community water systems, 53% of the state's 1,769 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 61 Arizona systems (3.4%) list surface water as their primary source.
Who owns and regulates Apache Junction Water District?
EPA lists Apache Junction Water District as owned by a local government. The AZ state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 13 of the 94 active systems in Pinal County (14%) are also owned by a local government.
Does Apache Junction Water District have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in September 2025. The violations listed here began between June 2024 and September 2025. By type: 9 monitoring and reporting, 1 contaminant level above the legal limit, 1 reporting and 1 required treatment not met. The contaminant or rule involved most often is Chlorite (4 of them). EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chloritecode 1009 | No | Resolved |
| 2025-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chloritecode 1009 | No | Resolved |
| 2025-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorine dioxidecode 1008 | No | Resolved |
| 2025-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorine dioxidecode 1008 | No | Resolved |
| 2025-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chloritecode 1009 | No | Resolved |
| 2025-05-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2025-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2024-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chloritecode 1009 | No | Resolved |
| 2024-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Resolved |
| 2024-06-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Apache Junction Water District: frequently asked questions
Who runs Apache Junction Water District?
Apache Junction Water District (PWSID AZ0411039) is a community water system owned by a local government. It is regulated by the AZ state drinking water program.
How many people does Apache Junction Water District serve?
Apache Junction Water District reports serving 15,610 people through 4,200 service connections in Pinal County, Arizona.
Where does Apache Junction Water District get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Apache Junction Water District have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in September 2025. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Apache Junction Water District's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in September 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the AZ state drinking water program.
Where can I find Apache Junction Water District's water quality report?
As a community water system, Apache Junction Water District must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Pinal County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Arizona Water Co - Pinal Valley | Pinal | 134,432 | Community | Groundwater |
| Epcor - San Tan | Pinal | 87,435 | Community | Groundwater |
| Gw Santa Cruz Water Co | Pinal | 84,000 | Community | Groundwater |
| Arizona Water Co - Apache Junction | Pinal | 62,055 | Community | Groundwater |
| Lago Del Oro Water Company | Pinal | 18,132 | Community | Groundwater |
| Florence Water Company | Pinal | 15,900 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Apache Junction Water District, PWSID AZ0411039, Arizona”, https://aquacensus.com/water-systems/arizona/apache-junction-water-district-az0411039 (data as of October 1, 2026).