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THIM UTILITY COMPANY

PWS ID: AZ0410117 · TUCSON, Arizona 85754

THIM UTILITY COMPANY serves 310 people in TUCSON, Arizona using Groundwater water sources. It has 82 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: THIM UTILITY COMPANY

THIM UTILITY COMPANY is a private-owned community water system that delivers drinking water to 310 residents in TUCSON, Arizona (Pima County) through 127 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 82 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 68 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Consumer Confidence Rule, recorded in 11 violations (Other). 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. THIM UTILITY COMPANY's 82 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
310
Total Violations
82
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
127
County
Pima
School/Daycare
No
MCL Violations
0
Monitoring Violations
68
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 11 2019
Coliform (TCR) MR 8 2014
Nitrate MR 7 2005
DICHLOROMETHANE MR 2 1999
p-Dichlorobenzene MR 2 1999
1,1-Dichloroethylene MR 2 1999
trans-1,2-Dichloroethylene MR 2 1999
1,2-Dichloroethane MR 2 1999
Tetrachloroethylene MR 2 1999
Trichloroethylene MR 2 1999
Benzene MR 2 1999
Ethylbenzene MR 2 1999
Styrene MR 2 1999
cis-1,2-Dichloroethylene MR 2 1999
Xylenes, Total MR 2 1999
o-Dichlorobenzene MR 2 1999
1,2-Dichloropropane MR 2 1999
CHLOROBENZENE MR 2 1999
Toluene MR 2 1999
Total Haloacetic Acids (HAA5) MR 2 2018
1,2,4-Trichlorobenzene MR 2 1999
Gross Alpha, Excl. Radon and U MR 2 1980
1,1,2-Trichloroethane MR 2 1999
1,1,1-Trichloroethane MR 2 1999
Carbon tetrachloride MR 2 1999
TTHM MR 2 2018
Cadmium MR 1 1988
Fluoride MR 1 1988
Selenium MR 1 1988
Mercury MR 1 1988

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 THIM UTILITY 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 AZ0410117 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 THIM UTILITY 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
2019 Consumer Confidence Rule Other 11 SDWIS / AZ0410117 / 7000
2018 Total Haloacetic Acids (HAA5) MR 2 SDWIS / AZ0410117 / 2456
2018 TTHM MR 2 SDWIS / AZ0410117 / 2950
2014 Coliform (TCR) MR 8 SDWIS / AZ0410117 / 3100
2005 Nitrate MR 7 SDWIS / AZ0410117 / 1040
1999 DICHLOROMETHANE MR 2 SDWIS / AZ0410117 / 2964
1999 p-Dichlorobenzene MR 2 SDWIS / AZ0410117 / 2969
1999 1,1-Dichloroethylene MR 2 SDWIS / AZ0410117 / 2977
1999 trans-1,2-Dichloroethylene MR 2 SDWIS / AZ0410117 / 2979
1999 1,2-Dichloroethane MR 2 SDWIS / AZ0410117 / 2980
1999 Tetrachloroethylene MR 2 SDWIS / AZ0410117 / 2987
1999 Trichloroethylene MR 2 SDWIS / AZ0410117 / 2984
1999 Benzene MR 2 SDWIS / AZ0410117 / 2990
1999 Ethylbenzene MR 2 SDWIS / AZ0410117 / 2992
1999 Styrene MR 2 SDWIS / AZ0410117 / 2996

How THIM UTILITY COMPANY Compares

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

Metric THIM UTILITY COMPANY Arizona avg Federal benchmark
Total violations 82 153.3 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 310 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 THIM UTILITY COMPANY water safe to drink? ▼
THIM UTILITY COMPANY (PWS ID: AZ0410117) has 82 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 310 people using Groundwater sources.
How many people does THIM UTILITY COMPANY serve? ▼
THIM UTILITY COMPANY serves 310 people in TUCSON, Arizona. It is a Private-owned system using Groundwater water sources with 127 service connections.
What type of violations does THIM UTILITY COMPANY have? ▼
THIM UTILITY COMPANY has 82 total violations: 0 health-based violations (MCL exceedances or treatment failures), 68 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in THIM UTILITY COMPANY water? ▼
No PFAS testing data is available for THIM UTILITY COMPANY under the EPA's UCMR5 monitoring program.
What water source does THIM UTILITY COMPANY use? ▼
THIM UTILITY 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.

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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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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial