Public water system · AZ0405002
ActiveGraham County Utilities - Pima
At a glance
Graham County Utilities - Pima (PWSID AZ0405002) is an active community water system in Graham County, Arizona. It reports serving 3,799 people through 1,632 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,799
Service connections
1,632
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Graham County Utilities - Pima compare with other water systems in Graham County?
By EPA's size categories, Graham County Utilities - Pima is a medium system (3,301 to 10,000 people). Graham County has 16 active public water systems, and Graham County Utilities - Pima is the 2nd-largest of them by population served. Its population served is about twice the county average of 1,859 people per system, and accounts for 13% of the 29,739 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 Graham County Utilities - Pima is about 43% below 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,612 Arizona systems (91%) list groundwater as their primary source.
Who owns and regulates Graham County Utilities - Pima?
EPA lists Graham County Utilities - Pima as privately owned. 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. 6 of the 16 active systems in Graham County (38%) are also privately owned.
Does Graham County Utilities - Pima have drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in October 2025. The violations listed here began between October 2021 and October 2025. By type: 6 public notice, recordkeeping or other, 5 required treatment not met and 1 monitoring and reporting. The contaminant or rule involved most often is Groundwater Rule (5 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 |
|---|---|---|---|---|
| 2025-10-02 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2025-02-23 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2023-04-02 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2022-07-01 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-07-01 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-06-01 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-03-17 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-02-13 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2021-11-25 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2021-10-02 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | 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.
Graham County Utilities - Pima: frequently asked questions
Who runs Graham County Utilities - Pima?
Graham County Utilities - Pima (PWSID AZ0405002) is a community water system privately owned. It is regulated by the AZ state drinking water program.
How many people does Graham County Utilities - Pima serve?
Graham County Utilities - Pima reports serving 3,799 people through 1,632 service connections in Graham County, Arizona.
Where does Graham County Utilities - Pima get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Graham County Utilities - Pima have any drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in October 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 Graham County Utilities - Pima'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, 5 are health-based, and the most recent began in October 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 Graham County Utilities - Pima's water quality report?
As a community water system, Graham County Utilities - Pima 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 Graham County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Safford City of | Graham | 20,600 | Community | Groundwater |
| Freeport Mcmoran Safford | Graham | 1,619 | Non-transient non-community | Groundwater |
| Usdj Fbp Fed Corr Inst Safford | Graham | 949 | Community | Groundwater |
| Adoc Aspc Fort Grant | Graham | 800 | Community | Groundwater |
| Graham County Utilities-Fort Thomas | Graham | 452 | Community | Groundwater |
| Eden Water Company Inc. | Graham | 400 | Community | Purchased 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, “Graham County Utilities - Pima, PWSID AZ0405002, Arizona”, https://aquacensus.com/water-systems/arizona/graham-county-utilities-pima-az0405002 (data as of October 1, 2026).