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Non-Transient Non-Community Water System · PWS AZ0409052

Navajo County Government Complex

Holbrook, Arizona 86025 - drinking water served from groundwater sources to 540 people, tracked in EPA SDWIS and UCMR5.

540
People served
203
EPA violations
13
Health-based
Untested
UCMR5 result

The verdict

EPA records 203 drinking-water violations at Navajo County Government Complex, 6% of them health-based - above the Arizona per-system average.

203
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
540
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Navajo County Government Complex

Navajo County Government Complex is a local-owned non-transient non-community water system that delivers drinking water to 540 residents in Holbrook, Arizona (Navajo County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 203 total violations for this system , of which 13 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 167 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is DICHLOROMETHANE, recorded in 17 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Arizona, EPA tracks 1,493 public water systems serving 7,322,166 people, with 228,944 cumulative violations and 15,663 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 153.3 violations. Statewide, 145 of 152 UCMR5-tested systems have reported PFAS detections (95.4%).

Navajo County Government Complex's 203 violations sit above the Arizona average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
540
Total Violations
203
Health-Based Violations
13
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Navajo
School/Daycare
No
MCL Violations
1
Monitoring Violations
167
Treatment Tech Violations
12

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
DICHLOROMETHANE MR 17 2007
Styrene MR 17 2007
Coliform (TCR) MR 12 2009
Groundwater Rule TT 8 2020
Chlorine MR 7 2024
Total Haloacetic Acids (HAA5) MR 5 2022
TTHM MR 5 2022
Nitrate MR 5 2001
Gross Alpha, Excl. Radon and U MR 4 2004
LEAD AND COPPER RULE REVISIONS TT 4 2024
LEAD AND COPPER RULE REVISIONS RPT 4 2024
Benzene MR 3 2007
Xylenes, Total MR 3 2007
Chromium MR 2 1998
Fluoride MR 2 1998
cis-1,2-Dichloroethylene MR 2 2007
1,2-Dichloroethane MR 2 2007
Carbon tetrachloride MR 2 2007
Tetrachloroethylene MR 2 2007
CHLOROBENZENE MR 2 2007
Toluene MR 2 2007
Ethylbenzene MR 2 2007
Public Notice Other 2 2024
Selenium MR 2 1998
1,2,4-Trichlorobenzene MR 2 2007
p-Dichlorobenzene MR 2 2007
trans-1,2-Dichloroethylene MR 2 2007
Arsenic MR 2 1998
1,1,1-Trichloroethane MR 2 2007
Trichloroethylene MR 2 2007

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Navajo County Government Complex.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID AZ0409052 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Arizona Drinking Water Authority

Arizona DEQ, Drinking Water Program is the primacy agency that licenses and inspects Navajo County Government Complex under EPA-delegated authority.

Open AZ regulator portal

Source: Arizona DEQ, Drinking Water Program

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2024 Chlorine MR 7 SDWIS / AZ0409052 / 0999
2024 LEAD AND COPPER RULE REVISIONS TT 4 SDWIS / AZ0409052 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 4 SDWIS / AZ0409052 / 5200
2024 Public Notice Other 2 SDWIS / AZ0409052 / 7500
2022 Total Haloacetic Acids (HAA5) MR 5 SDWIS / AZ0409052 / 2456
2022 TTHM MR 5 SDWIS / AZ0409052 / 2950
2020 Groundwater Rule TT 8 SDWIS / AZ0409052 / 0700
2009 Coliform (TCR) MR 12 SDWIS / AZ0409052 / 3100
2007 DICHLOROMETHANE MR 17 SDWIS / AZ0409052 / 2964
2007 Styrene MR 17 SDWIS / AZ0409052 / 2996
2007 Benzene MR 3 SDWIS / AZ0409052 / 2990
2007 Xylenes, Total MR 3 SDWIS / AZ0409052 / 2955
2007 cis-1,2-Dichloroethylene MR 2 SDWIS / AZ0409052 / 2380
2007 1,2-Dichloroethane MR 2 SDWIS / AZ0409052 / 2980
2007 Carbon tetrachloride MR 2 SDWIS / AZ0409052 / 2982

How Navajo County Government Complex Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Navajo County Government Complex Arizona avg Federal benchmark
Total violations 203 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 13 10.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 95.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 540 4,904 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,493 regulated public water systems in Arizona.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Navajo County Government Complex water safe to drink? ▼
Navajo County Government Complex (PWS ID: AZ0409052) has 203 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 540 people using Groundwater sources.
How many people does Navajo County Government Complex serve? ▼
Navajo County Government Complex serves 540 people in Holbrook, Arizona. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does Navajo County Government Complex have? ▼
Navajo County Government Complex has 203 total violations: 13 health-based violations (MCL exceedances or treatment failures), 167 monitoring/reporting violations, and 12 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Navajo County Government Complex water? ▼
No PFAS testing data is available for Navajo County Government Complex under the EPA's UCMR5 monitoring program.
What water source does Navajo County Government Complex use? ▼
Navajo County Government Complex uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.