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SKULL VALLEY SCHOOL DIST 15

PWS ID: AZ0413098 · SKULL VALLEY, Arizona 86338

SKULL VALLEY SCHOOL DIST 15 serves 60 people in SKULL VALLEY, Arizona using Groundwater water sources. It has 84 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: SKULL VALLEY SCHOOL DIST 15

SKULL VALLEY SCHOOL DIST 15 is a local-owned non-transient non-community water system that delivers drinking water to 60 residents in SKULL VALLEY, Arizona (Yavapai County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 84 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 79 monitoring and reporting violations are on file. The most recent violation on record dates to 2016.

The most frequently cited contaminant at this system is Nitrate, recorded in 3 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. SKULL VALLEY SCHOOL DIST 15's 84 violations sit below 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
60
Total Violations
84
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Yavapai
School/Daycare
Yes
MCL Violations
0
Monitoring Violations
79
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 3 2000
o-Dichlorobenzene MR 3 2016
1,2-Dichloropropane MR 3 2016
Tetrachloroethylene MR 3 2016
CHLOROBENZENE MR 3 2016
Toluene MR 3 2016
Styrene MR 3 2016
1,1,2-Trichloroethane MR 3 2016
DICHLOROMETHANE MR 3 2016
Ethylbenzene MR 3 2016
trans-1,2-Dichloroethylene MR 3 2016
cis-1,2-Dichloroethylene MR 3 2016
Lead and Copper Rule MR 2 2006
Xylenes, Total MR 2 2016
Vinyl chloride MR 2 2016
Carbon tetrachloride MR 2 2016
Benzene MR 2 2016
Total Haloacetic Acids (HAA5) MR 2 2016
Arsenic MR 2 1989
Barium MR 2 1989
Chlorine MR 2 2004
Mercury MR 2 1989
Fluoride MR 2 1989
Chromium MR 2 1989
Trichloroethylene MR 2 2016
Selenium MR 2 1989
1,1,1-Trichloroethane MR 2 2016
1,2,4-Trichlorobenzene MR 2 2016
1,2-Dichloroethane MR 2 2016
p-Dichlorobenzene MR 2 2016

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 SKULL VALLEY SCHOOL DIST 15.

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 AZ0413098 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 SKULL VALLEY SCHOOL DIST 15 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
2016 o-Dichlorobenzene MR 3 SDWIS / AZ0413098 / 2968
2016 1,2-Dichloropropane MR 3 SDWIS / AZ0413098 / 2983
2016 Tetrachloroethylene MR 3 SDWIS / AZ0413098 / 2987
2016 CHLOROBENZENE MR 3 SDWIS / AZ0413098 / 2989
2016 Toluene MR 3 SDWIS / AZ0413098 / 2991
2016 Styrene MR 3 SDWIS / AZ0413098 / 2996
2016 1,1,2-Trichloroethane MR 3 SDWIS / AZ0413098 / 2985
2016 DICHLOROMETHANE MR 3 SDWIS / AZ0413098 / 2964
2016 Ethylbenzene MR 3 SDWIS / AZ0413098 / 2992
2016 trans-1,2-Dichloroethylene MR 3 SDWIS / AZ0413098 / 2979
2016 cis-1,2-Dichloroethylene MR 3 SDWIS / AZ0413098 / 2380
2016 Xylenes, Total MR 2 SDWIS / AZ0413098 / 2955
2016 Vinyl chloride MR 2 SDWIS / AZ0413098 / 2976
2016 Carbon tetrachloride MR 2 SDWIS / AZ0413098 / 2982
2016 Benzene MR 2 SDWIS / AZ0413098 / 2990

How SKULL VALLEY SCHOOL DIST 15 Compares

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

Metric SKULL VALLEY SCHOOL DIST 15 Arizona avg Federal benchmark
Total violations 84 153.3 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 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 60 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 SKULL VALLEY SCHOOL DIST 15 water safe to drink? ▼
SKULL VALLEY SCHOOL DIST 15 (PWS ID: AZ0413098) has 84 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 60 people using Groundwater sources.
How many people does SKULL VALLEY SCHOOL DIST 15 serve? ▼
SKULL VALLEY SCHOOL DIST 15 serves 60 people in SKULL VALLEY, Arizona. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does SKULL VALLEY SCHOOL DIST 15 have? ▼
SKULL VALLEY SCHOOL DIST 15 has 84 total violations: 0 health-based violations (MCL exceedances or treatment failures), 79 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in SKULL VALLEY SCHOOL DIST 15 water? ▼
No PFAS testing data is available for SKULL VALLEY SCHOOL DIST 15 under the EPA's UCMR5 monitoring program.
What water source does SKULL VALLEY SCHOOL DIST 15 use? ▼
SKULL VALLEY SCHOOL DIST 15 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.

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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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