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Community Water System · PWS AZ0403010

Adot Airport Grand Canyon

Phoenix, Arizona 85007-3217 - drinking water served from groundwater sources to 1,140 people, tracked in EPA SDWIS and UCMR5.

1,140
People served
317
EPA violations
7
Health-based
Untested
UCMR5 result

The verdict

EPA records 317 drinking-water violations at Adot Airport Grand Canyon, 2% of them health-based - above the Arizona per-system average.

317
Total EPA violations on record
2%
Health-based (MCL / treatment failure)
1,140
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Adot Airport Grand Canyon

Adot Airport Grand Canyon is a state-owned community water system that delivers drinking water to 1,140 residents in Phoenix, Arizona (Coconino County) through 18 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 317 total violations for this system , of which 7 (2%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 266 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Chlorine, recorded in 33 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%).

Adot Airport Grand Canyon's 317 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
1,140
Total Violations
317
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Community
Owner Type
State
Connections
18
County
Coconino
School/Daycare
No
MCL Violations
3
Monitoring Violations
266
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 33 2022
Consumer Confidence Rule Other 13 2016
Nitrate MR 13 2009
Coliform (TCR) MR 11 2015
Fluoride MR 8 2009
Total Haloacetic Acids (HAA5) MR 7 2010
Selenium MR 7 2008
Chromium MR 6 2008
Mercury MR 6 2008
Arsenic MR 6 2008
TTHM MR 6 2010
Barium MR 6 2008
Cadmium MR 6 2008
CYANIDE MR 6 2009
Antimony, Total MR 4 2008
Surface Water Treatment Rule TT 4 2002
Thallium, Total MR 4 2008
cis-1,2-Dichloroethylene MR 4 2008
trans-1,2-Dichloroethylene MR 4 2008
1,1,1-Trichloroethane MR 4 2008
Trichloroethylene MR 4 2008
1,1,2-Trichloroethane MR 4 2008
Tetrachloroethylene MR 4 2008
Benzene MR 4 2008
Ethylbenzene MR 4 2008
Styrene MR 4 2008
Lead and Copper Rule MR 4 2017
Beryllium, Total MR 4 2008
o-Dichlorobenzene MR 4 2008
p-Dichlorobenzene MR 4 2008

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 Adot Airport Grand Canyon.

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 AZ0403010 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 Adot Airport Grand Canyon 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
2022 Chlorine MR 33 SDWIS / AZ0403010 / 0999
2017 Lead and Copper Rule MR 4 SDWIS / AZ0403010 / 5000
2017 Revised Total Coliform Rule RPT 1 SDWIS / AZ0403010 / 8000
2016 Consumer Confidence Rule Other 13 SDWIS / AZ0403010 / 7000
2015 Coliform (TCR) MR 11 SDWIS / AZ0403010 / 3100
2011 E. COLI MR 1 SDWIS / AZ0403010 / 3014
2010 Total Haloacetic Acids (HAA5) MR 7 SDWIS / AZ0403010 / 2456
2010 TTHM MR 6 SDWIS / AZ0403010 / 2950
2009 Nitrate MR 13 SDWIS / AZ0403010 / 1040
2009 Fluoride MR 8 SDWIS / AZ0403010 / 1025
2009 CYANIDE MR 6 SDWIS / AZ0403010 / 1024
2008 Selenium MR 7 SDWIS / AZ0403010 / 1045
2008 Chromium MR 6 SDWIS / AZ0403010 / 1020
2008 Mercury MR 6 SDWIS / AZ0403010 / 1035
2008 Arsenic MR 6 SDWIS / AZ0403010 / 1005

How Adot Airport Grand Canyon Compares

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

Metric Adot Airport Grand Canyon Arizona avg Federal benchmark
Total violations 317 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 7 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 1,140 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 Adot Airport Grand Canyon water safe to drink? ▼
Adot Airport Grand Canyon (PWS ID: AZ0403010) has 317 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,140 people using Groundwater sources.
How many people does Adot Airport Grand Canyon serve? ▼
Adot Airport Grand Canyon serves 1,140 people in Phoenix, Arizona. It is a State-owned system using Groundwater water sources with 18 service connections.
What type of violations does Adot Airport Grand Canyon have? ▼
Adot Airport Grand Canyon has 317 total violations: 7 health-based violations (MCL exceedances or treatment failures), 266 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Adot Airport Grand Canyon water? ▼
No PFAS testing data is available for Adot Airport Grand Canyon under the EPA's UCMR5 monitoring program.
What water source does Adot Airport Grand Canyon use? ▼
Adot Airport Grand Canyon uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
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.