Non-Transient Non-Community Water System · PWS AZ0411078

Resolution Copper Company

Superior, Arizona 85173 - drinking water served from groundwater sources to 300 people, tracked in EPA SDWIS and UCMR5.

Compiled by PlainWater Editorial, Drinking Water Quality Editorial Team · May 15, 2026

300
People served: 138
EPA violations: 6
Health-based: Untested
UCMR5 result

The verdict

EPA records 138 drinking-water violations at Resolution Copper Company, 4% of them health-based - below the Arizona per-system average.

138
Total EPA violations on record: 4%
Health-based (MCL / treatment failure): 300
People served by this system: N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Resolution Copper Company

Resolution Copper Company is a private-owned non-transient non-community water system that delivers drinking water to 300 residents in Superior, Arizona (Pinal County) through 5 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 138 total violations for this system , of which 6 (4%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 128 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Chlorine, recorded in 10 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%).

Resolution Copper Company's 138 violations sit below 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

300

Total Violations

138

Health-Based Violations

Water Source

Groundwater

System Details

System Type: Non-Transient Non-Community
Owner Type: Private
Connections: 5
County: Pinal
School/Daycare: No
MCL Violations: 6
Monitoring Violations: 128
Treatment Tech Violations: 0

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Chlorine	MR	10	2019
Coliform (TCR)	MR	9	2012
Coliform (TCR)	MCL	6	2012
1,2-Dichloropropane	MR	5	2018
1,1,2-Trichloroethane	MR	5	2018
Toluene	MR	5	2018
Ethylbenzene	MR	5	2018
DICHLOROMETHANE	MR	5	2018
trans-1,2-Dichloroethylene	MR	5	2018
Tetrachloroethylene	MR	5	2018
Styrene	MR	5	2018
cis-1,2-Dichloroethylene	MR	5	2018
o-Dichlorobenzene	MR	5	2018
CHLOROBENZENE	MR	5	2018
1,2-Dichloroethane	MR	4	2018
Trichloroethylene	MR	4	2018
Benzene	MR	4	2018
Revised Total Coliform Rule	MON	4	2018
1,2,4-Trichlorobenzene	MR	4	2018
Xylenes, Total	MR	4	2018
1,1-Dichloroethylene	MR	4	2018
Carbon tetrachloride	MR	4	2018
p-Dichlorobenzene	MR	4	2018
1,1,1-Trichloroethane	MR	4	2018
Vinyl chloride	MR	3	2018
Nitrate	MR	3	2006
TTHM	MR	2	2010
E. COLI	MR	2	2012
Revised Total Coliform Rule	RPT	2	2024
Total Haloacetic Acids (HAA5)	MR	2	2010

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 Resolution Copper 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 AZ0411078 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 Resolution Copper 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
2024	Revised Total Coliform Rule	RPT	2	SDWIS / AZ0411078 / 8000
2019	Chlorine	MR	10	SDWIS / AZ0411078 / 0999
2018	1,2-Dichloropropane	MR	5	SDWIS / AZ0411078 / 2983
2018	1,1,2-Trichloroethane	MR	5	SDWIS / AZ0411078 / 2985
2018	Toluene	MR	5	SDWIS / AZ0411078 / 2991
2018	Ethylbenzene	MR	5	SDWIS / AZ0411078 / 2992
2018	DICHLOROMETHANE	MR	5	SDWIS / AZ0411078 / 2964
2018	trans-1,2-Dichloroethylene	MR	5	SDWIS / AZ0411078 / 2979
2018	Tetrachloroethylene	MR	5	SDWIS / AZ0411078 / 2987
2018	Styrene	MR	5	SDWIS / AZ0411078 / 2996
2018	cis-1,2-Dichloroethylene	MR	5	SDWIS / AZ0411078 / 2380
2018	o-Dichlorobenzene	MR	5	SDWIS / AZ0411078 / 2968
2018	CHLOROBENZENE	MR	5	SDWIS / AZ0411078 / 2989
2018	1,2-Dichloroethane	MR	4	SDWIS / AZ0411078 / 2980
2018	Trichloroethylene	MR	4	SDWIS / AZ0411078 / 2984

How Resolution Copper Company Compares

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

Metric	Resolution Copper Company	Arizona avg	Federal benchmark
Total violations	138	153.3	SDWA compliance, any non-zero count is a recorded breach
Health-based violations	6	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	300	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 Resolution Copper Company water safe to drink? ▼

Resolution Copper Company (PWS ID: AZ0411078) has 138 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 300 people using Groundwater sources.

How many people does Resolution Copper Company serve? ▼

Resolution Copper Company serves 300 people in Superior, Arizona. It is a Private-owned system using Groundwater water sources with 5 service connections.

What type of violations does Resolution Copper Company have? ▼

Resolution Copper Company has 138 total violations: 6 health-based violations (MCL exceedances or treatment failures), 128 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in Resolution Copper Company water? ▼

No PFAS testing data is available for Resolution Copper Company under the EPA's UCMR5 monitoring program.

What water source does Resolution Copper Company use? ▼

Resolution Copper Company 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.