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States → Arizona

GREEN VALLEY MHP

PWS ID: AZ0413348 · FLAGSTAFF, Arizona 86004

GREEN VALLEY MHP serves 190 people in FLAGSTAFF, Arizona using Groundwater water sources. It has 503 recorded EPA violations, including 139 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: GREEN VALLEY MHP

GREEN VALLEY MHP is a public/private-owned community water system that delivers drinking water to 190 residents in FLAGSTAFF, Arizona (Yavapai County) through 76 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 503 total violations for this system , of which 139 (28%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 296 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Arsenic, recorded in 139 violations (MCL, health-based). 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. GREEN VALLEY MHP's 503 violations sit above the Arizona average. Statewide, 145 of 152 UCMR5-tested systems have reported PFAS detections (95.4%). 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
190
Total Violations
503
Health-Based Violations
139
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Public/Private
Connections
76
County
Yavapai
School/Daycare
No
MCL Violations
139
Monitoring Violations
296
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 139 2025
Arsenic MR 108 2021
Coliform (TCR) MR 96 2015
Consumer Confidence Rule Other 34 2023
Public Notice Other 19 2025
Lead and Copper Rule MR 10 2013
Nitrate MR 6 2006
Revised Total Coliform Rule MON 3 2024
cis-1,2-Dichloroethylene MR 2 1998
o-Dichlorobenzene MR 2 1998
p-Dichlorobenzene MR 2 1998
1,1-Dichloroethylene MR 2 1998
1,2-Dichloroethane MR 2 1998
1,1,1-Trichloroethane MR 2 1998
1,2-Dichloropropane MR 2 1998
Trichloroethylene MR 2 1998
CHLOROBENZENE MR 2 1998
Styrene MR 2 1998
Revised Total Coliform Rule RPT 2 2021
DICHLOROMETHANE MR 2 1998
1,1,2-Trichloroethane MR 2 1998
Tetrachloroethylene MR 2 1998
Carbon tetrachloride MR 2 1998
Benzene MR 2 1998
Toluene MR 2 1998
trans-1,2-Dichloroethylene MR 2 1998
Ethylbenzene MR 2 1998
1,2,4-Trichlorobenzene MR 1 1998
Xylenes, Total MR 1 1998
Endrin MR 1 1998

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 GREEN VALLEY MHP.

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 AZ0413348 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 GREEN VALLEY MHP 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
2025 Arsenic MCL 139 SDWIS / AZ0413348 / 1005
2025 Public Notice Other 19 SDWIS / AZ0413348 / 7500
2024 Revised Total Coliform Rule MON 3 SDWIS / AZ0413348 / 8000
2023 Consumer Confidence Rule Other 34 SDWIS / AZ0413348 / 7000
2021 Arsenic MR 108 SDWIS / AZ0413348 / 1005
2021 Revised Total Coliform Rule RPT 2 SDWIS / AZ0413348 / 8000
2015 Coliform (TCR) MR 96 SDWIS / AZ0413348 / 3100
2013 Lead and Copper Rule MR 10 SDWIS / AZ0413348 / 5000
2010 E. COLI MR 1 SDWIS / AZ0413348 / 3014
2006 Nitrate MR 6 SDWIS / AZ0413348 / 1040
1998 cis-1,2-Dichloroethylene MR 2 SDWIS / AZ0413348 / 2380
1998 o-Dichlorobenzene MR 2 SDWIS / AZ0413348 / 2968
1998 p-Dichlorobenzene MR 2 SDWIS / AZ0413348 / 2969
1998 1,1-Dichloroethylene MR 2 SDWIS / AZ0413348 / 2977
1998 1,2-Dichloroethane MR 2 SDWIS / AZ0413348 / 2980

How GREEN VALLEY MHP Compares

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

Metric GREEN VALLEY MHP Arizona avg Federal benchmark
Total violations 503 153.3 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 139 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 190 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is GREEN VALLEY MHP water safe to drink? ▼
GREEN VALLEY MHP (PWS ID: AZ0413348) has 503 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 190 people using Groundwater sources.
How many people does GREEN VALLEY MHP serve? ▼
GREEN VALLEY MHP serves 190 people in FLAGSTAFF, Arizona. It is a Public/Private-owned system using Groundwater water sources with 76 service connections.
What type of violations does GREEN VALLEY MHP have? ▼
GREEN VALLEY MHP has 503 total violations: 139 health-based violations (MCL exceedances or treatment failures), 296 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in GREEN VALLEY MHP water? ▼
No PFAS testing data is available for GREEN VALLEY MHP under the EPA's UCMR5 monitoring program.
What water source does GREEN VALLEY MHP use? ▼
GREEN VALLEY MHP 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.

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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.

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