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Community Water System · PWS AZ0413075

Little Park Water Company

Sedona, Arizona 86351 - drinking water served from groundwater sources to 264 people, tracked in EPA SDWIS and UCMR5.

264
People served
160
EPA violations
10
Health-based
Untested
UCMR5 result

The verdict

EPA records 160 drinking-water violations at Little Park Water Company, 6% of them health-based - above the Arizona per-system average.

160
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
264
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Little Park Water Company

Little Park Water Company is a private-owned community water system that delivers drinking water to 264 residents in Sedona, Arizona (Yavapai County) through 112 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 160 total violations for this system , of which 10 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 130 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 31 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%).

Little Park Water Company's 160 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
264
Total Violations
160
Health-Based Violations
10
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
112
County
Yavapai
School/Daycare
No
MCL Violations
10
Monitoring Violations
130
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MR 31 2025
Coliform (TCR) MR 18 2013
Consumer Confidence Rule Other 8 2023
Revised Total Coliform Rule MON 8 2021
Revised Total Coliform Rule RPT 7 2024
CYANIDE MR 6 2015
Antimony, Total MR 6 2015
Cadmium MR 6 2015
Fluoride MR 6 2015
Chromium MR 6 2015
Thallium, Total MR 6 2015
Nickel MR 6 2015
Selenium MR 6 2015
Mercury MR 6 2015
Barium MR 6 2015
Beryllium, Total MR 6 2015
Arsenic MCL 5 2008
Coliform (TCR) MCL 5 2013
Lead and Copper Rule MR 4 2025
Gross Alpha, Excl. Radon and U MR 2 1986
Nitrate MR 1 1999

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 Little Park Water Company.

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 AZ0413075 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 Little Park Water Company 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 MR 31 SDWIS / AZ0413075 / 1005
2025 Lead and Copper Rule MR 4 SDWIS / AZ0413075 / 5000
2024 Revised Total Coliform Rule RPT 7 SDWIS / AZ0413075 / 8000
2023 Consumer Confidence Rule Other 8 SDWIS / AZ0413075 / 7000
2021 Revised Total Coliform Rule MON 8 SDWIS / AZ0413075 / 8000
2015 CYANIDE MR 6 SDWIS / AZ0413075 / 1024
2015 Antimony, Total MR 6 SDWIS / AZ0413075 / 1074
2015 Cadmium MR 6 SDWIS / AZ0413075 / 1015
2015 Fluoride MR 6 SDWIS / AZ0413075 / 1025
2015 Chromium MR 6 SDWIS / AZ0413075 / 1020
2015 Thallium, Total MR 6 SDWIS / AZ0413075 / 1085
2015 Nickel MR 6 SDWIS / AZ0413075 / 1036
2015 Selenium MR 6 SDWIS / AZ0413075 / 1045
2015 Mercury MR 6 SDWIS / AZ0413075 / 1035
2015 Barium MR 6 SDWIS / AZ0413075 / 1010

How Little Park Water Company Compares

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

Metric Little Park Water Company Arizona avg Federal benchmark
Total violations 160 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 10 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 264 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 Little Park Water Company water safe to drink? ▼
Little Park Water Company (PWS ID: AZ0413075) has 160 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 264 people using Groundwater sources.
How many people does Little Park Water Company serve? ▼
Little Park Water Company serves 264 people in Sedona, Arizona. It is a Private-owned system using Groundwater water sources with 112 service connections.
What type of violations does Little Park Water Company have? ▼
Little Park Water Company has 160 total violations: 10 health-based violations (MCL exceedances or treatment failures), 130 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Little Park Water Company water? ▼
No PFAS testing data is available for Little Park Water Company under the EPA's UCMR5 monitoring program.
What water source does Little Park Water Company use? ▼
Little Park Water Company 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.