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PALOMINAS WATER SEWER CO

PWS ID: AZ0402026 · TUCSON, Arizona 85754

PALOMINAS WATER SEWER CO serves 27 people in TUCSON, Arizona using Groundwater water sources. It has 183 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: PALOMINAS WATER SEWER CO

PALOMINAS WATER SEWER CO is a private-owned community water system that delivers drinking water to 27 residents in TUCSON, Arizona (Cochise County) through 16 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 183 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 133 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 36 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. PALOMINAS WATER SEWER CO's 183 violations sit above 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
27
Total Violations
183
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
16
County
Cochise
School/Daycare
No
MCL Violations
0
Monitoring Violations
133
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 36 2013
Consumer Confidence Rule Other 30 2019
Chlorine MR 19 2022
Lead and Copper Rule MR 11 2019
Nitrate MR 3 2000
TTHM MR 3 2010
Total Haloacetic Acids (HAA5) MR 3 2010
Gross Alpha, Excl. Radon and U MR 3 1989
DICHLOROMETHANE MR 2 2002
cis-1,2-Dichloroethylene MR 2 2002
o-Dichlorobenzene MR 2 2002
p-Dichlorobenzene MR 2 2002
1,1-Dichloroethylene MR 2 2002
1,2-Dichloroethane MR 2 2002
Trichloroethylene MR 2 2002
Carbon tetrachloride MR 2 2002
1,2-Dichloropropane MR 2 2002
Ethylbenzene MR 2 2002
Styrene MR 2 2002
1,1,1-Trichloroethane MR 2 2002
Tetrachloroethylene MR 2 2002
Mercury MR 2 1989
Endothall MR 2 2001
1,1,2-Trichloroethane MR 2 2002
Arsenic MR 2 1989
trans-1,2-Dichloroethylene MR 2 2002
Barium MR 2 1989
Cadmium MR 2 1989
Chromium MR 2 1989
Benzene 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 PALOMINAS WATER SEWER CO.

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 AZ0402026 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 PALOMINAS WATER SEWER CO 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
2022 Chlorine MR 19 SDWIS / AZ0402026 / 0999
2019 Consumer Confidence Rule Other 30 SDWIS / AZ0402026 / 7000
2019 Lead and Copper Rule MR 11 SDWIS / AZ0402026 / 5000
2019 Revised Total Coliform Rule MON 1 SDWIS / AZ0402026 / 8000
2018 Revised Total Coliform Rule RPT 2 SDWIS / AZ0402026 / 8000
2013 Coliform (TCR) MR 36 SDWIS / AZ0402026 / 3100
2010 TTHM MR 3 SDWIS / AZ0402026 / 2950
2010 Total Haloacetic Acids (HAA5) MR 3 SDWIS / AZ0402026 / 2456
2002 DICHLOROMETHANE MR 2 SDWIS / AZ0402026 / 2964
2002 cis-1,2-Dichloroethylene MR 2 SDWIS / AZ0402026 / 2380
2002 o-Dichlorobenzene MR 2 SDWIS / AZ0402026 / 2968
2002 p-Dichlorobenzene MR 2 SDWIS / AZ0402026 / 2969
2002 1,1-Dichloroethylene MR 2 SDWIS / AZ0402026 / 2977
2002 1,2-Dichloroethane MR 2 SDWIS / AZ0402026 / 2980
2002 Trichloroethylene MR 2 SDWIS / AZ0402026 / 2984

How PALOMINAS WATER SEWER CO Compares

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

Metric PALOMINAS WATER SEWER CO Arizona avg Federal benchmark
Total violations 183 153.3 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 27 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 PALOMINAS WATER SEWER CO water safe to drink? ▼
PALOMINAS WATER SEWER CO (PWS ID: AZ0402026) has 183 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 27 people using Groundwater sources.
How many people does PALOMINAS WATER SEWER CO serve? ▼
PALOMINAS WATER SEWER CO serves 27 people in TUCSON, Arizona. It is a Private-owned system using Groundwater water sources with 16 service connections.
What type of violations does PALOMINAS WATER SEWER CO have? ▼
PALOMINAS WATER SEWER CO has 183 total violations: 0 health-based violations (MCL exceedances or treatment failures), 133 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in PALOMINAS WATER SEWER CO water? ▼
No PFAS testing data is available for PALOMINAS WATER SEWER CO under the EPA's UCMR5 monitoring program.
What water source does PALOMINAS WATER SEWER CO use? ▼
PALOMINAS WATER SEWER CO 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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