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Non-Transient Non-Community Water System · PWS AZ0411035

Kelvin Simmons Coop

San Tan Valley, Arizona 85140 - drinking water served from groundwater sources to 28 people, tracked in EPA SDWIS and UCMR5.

28
People served
780
EPA violations
128
Health-based
Untested
UCMR5 result

The verdict

EPA records 780 drinking-water violations at Kelvin Simmons Coop, 16% of them health-based - above the Arizona per-system average.

780
Total EPA violations on record
16%
Health-based (MCL / treatment failure)
28
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Kelvin Simmons Coop

Kelvin Simmons Coop is a public/private-owned non-transient non-community water system that delivers drinking water to 28 residents in San Tan Valley, Arizona (Pinal County) through 12 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 780 total violations for this system , of which 128 (16%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 468 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 Combined Uranium, recorded in 113 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. Statewide, 145 of 152 UCMR5-tested systems have reported PFAS detections (95.4%).

Kelvin Simmons Coop's 780 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
28
Total Violations
780
Health-Based Violations
128
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Public/Private
Connections
12
County
Pinal
School/Daycare
No
MCL Violations
113
Monitoring Violations
468
Treatment Tech Violations
15

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Uranium MCL 113 2024
Combined Uranium MR 87 2024
Revised Total Coliform Rule MON 78 2024
Public Notice Other 69 2025
Coliform (TCR) MR 64 2016
Nitrate MR 59 2019
Lead and Copper Rule MR 56 2024
Revised Total Coliform Rule RPT 54 2024
Consumer Confidence Rule Other 38 2022
Chlorine MR 21 2014
E. COLI MR 12 2022
Lead and Copper Rule TT 9 2021
Revised Total Coliform Rule TT 6 2022
Fluoride MR 2 1998
Mercury MR 2 1998
Selenium MR 2 1998
1,2,4-Trichlorobenzene MR 2 2002
cis-1,2-Dichloroethylene MR 2 2002
Xylenes, Total MR 2 2002
p-Dichlorobenzene MR 2 2002
trans-1,2-Dichloroethylene MR 2 2002
1,2-Dichloroethane MR 2 2002
1,1,1-Trichloroethane MR 2 2002
Carbon tetrachloride MR 2 2002
1,1,2-Trichloroethane MR 2 2002
Tetrachloroethylene MR 2 2002
CHLOROBENZENE MR 2 2002
Ethylbenzene MR 2 2002
Styrene MR 2 2002
DICHLOROMETHANE MR 2 2002

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 Kelvin Simmons Coop.

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 AZ0411035 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 Kelvin Simmons Coop 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 Public Notice Other 69 SDWIS / AZ0411035 / 7500
2024 Combined Uranium MCL 113 SDWIS / AZ0411035 / 4006
2024 Combined Uranium MR 87 SDWIS / AZ0411035 / 4006
2024 Revised Total Coliform Rule MON 78 SDWIS / AZ0411035 / 8000
2024 Lead and Copper Rule MR 56 SDWIS / AZ0411035 / 5000
2024 Revised Total Coliform Rule RPT 54 SDWIS / AZ0411035 / 8000
2022 Consumer Confidence Rule Other 38 SDWIS / AZ0411035 / 7000
2022 E. COLI MR 12 SDWIS / AZ0411035 / 3014
2022 Revised Total Coliform Rule TT 6 SDWIS / AZ0411035 / 8000
2021 Lead and Copper Rule TT 9 SDWIS / AZ0411035 / 5000
2019 Nitrate MR 59 SDWIS / AZ0411035 / 1040
2016 Coliform (TCR) MR 64 SDWIS / AZ0411035 / 3100
2014 Chlorine MR 21 SDWIS / AZ0411035 / 0999
2002 1,2,4-Trichlorobenzene MR 2 SDWIS / AZ0411035 / 2378
2002 cis-1,2-Dichloroethylene MR 2 SDWIS / AZ0411035 / 2380

How Kelvin Simmons Coop Compares

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

Metric Kelvin Simmons Coop Arizona avg Federal benchmark
Total violations 780 153.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 128 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 28 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 Kelvin Simmons Coop water safe to drink? ▼
Kelvin Simmons Coop (PWS ID: AZ0411035) has 780 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 28 people using Groundwater sources.
How many people does Kelvin Simmons Coop serve? ▼
Kelvin Simmons Coop serves 28 people in San Tan Valley, Arizona. It is a Public/Private-owned system using Groundwater water sources with 12 service connections.
What type of violations does Kelvin Simmons Coop have? ▼
Kelvin Simmons Coop has 780 total violations: 128 health-based violations (MCL exceedances or treatment failures), 468 monitoring/reporting violations, and 15 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Kelvin Simmons Coop water? ▼
No PFAS testing data is available for Kelvin Simmons Coop under the EPA's UCMR5 monitoring program.
What water source does Kelvin Simmons Coop use? ▼
Kelvin Simmons Coop 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.