Public water system · AZ0409004
ActiveArizona Water Co - Overgaard
At a glance
Arizona Water Co - Overgaard (PWSID AZ0409004) is an active community water system in Navajo County, Arizona. It reports serving 13,797 people through 4,534 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, none is health-based, and the most recent began in October 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
13,797
Service connections
4,534
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Arizona Water Co - Overgaard compare with other water systems in Navajo County?
By EPA's size categories, Arizona Water Co - Overgaard is a large system (10,001 to 100,000 people). Navajo County has 63 active public water systems, and Arizona Water Co - Overgaard is the 2nd-largest of them by population served. Its population served is about 8.8 times the county average of 1,566 people per system, and accounts for 14% of the 98,636 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 Arizona Water Co - Overgaard is about twice 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 Arizona Water Co - Overgaard?
EPA lists Arizona Water Co - Overgaard 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. 39 of the 63 active systems in Navajo County (62%) are also privately owned.
Does Arizona Water Co - Overgaard have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2015. The violations listed here began between January 2003 and October 2015. By type: 11 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Chlorine (3 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 |
|---|---|---|---|---|
| 2015-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2009-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2006-08-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-03-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2003-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlordanecode 2959 | No | Resolved |
| 2003-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Pentachlorophenolcode 2326 | 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.
Arizona Water Co - Overgaard: frequently asked questions
Who runs Arizona Water Co - Overgaard?
Arizona Water Co - Overgaard (PWSID AZ0409004) is a community water system privately owned. It is regulated by the AZ state drinking water program.
How many people does Arizona Water Co - Overgaard serve?
Arizona Water Co - Overgaard reports serving 13,797 people through 4,534 service connections in Navajo County, Arizona.
Where does Arizona Water Co - Overgaard 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 Arizona Water Co - Overgaard have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2015. 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 Arizona Water Co - Overgaard'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, none is health-based, and the most recent began in October 2015. For current results, consult the system's annual water quality report, EPA ECHO, or the AZ state drinking water program.
Where can I find Arizona Water Co - Overgaard's water quality report?
As a community water system, Arizona Water Co - Overgaard 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 Navajo County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Show Low | Navajo | 17,139 | Community | Groundwater |
| Arizona Water Co - Lakeside | Navajo | 12,191 | Community | Groundwater |
| Winslow City of | Navajo | 9,789 | Community | Groundwater |
| Snowflake Town of | Navajo | 5,590 | Community | Groundwater |
| Ponderosa Dwid | Navajo | 5,375 | Community | Groundwater |
| Holbrook City of | Navajo | 4,833 | 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, “Arizona Water Co - Overgaard, PWSID AZ0409004, Arizona”, https://aquacensus.com/water-systems/arizona/arizona-water-co-overgaard-az0409004 (data as of October 1, 2026).