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Quechan Utility

PWS ID: 090400089 · Yuma, 09 85366

Quechan Utility serves 5,660 people in Yuma, 09 using Groundwater water sources. It has 623 recorded EPA violations, including 13 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (1 compound found).

Water Quality Snapshot: Quechan Utility

Quechan Utility is a native american-owned community water system that delivers drinking water to 5,660 residents in Yuma, 09 through 1,201 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 623 total violations for this system , of which 13 (2%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 462 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 Coliform (TCR), recorded in 24 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 63 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across 09, EPA tracks 323 public water systems serving 555,721 people, with 48,296 cumulative violations and 3,354 health-based violations on record. About 97% of systems in the state carry at least one violation, and state-wide the average per system is 149.5 violations. Quechan Utility's 623 violations sit above the 09 average. Statewide, 30 of 41 UCMR5-tested systems have reported PFAS detections (73.2%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
5,660
Total Violations
623
Health-Based Violations
13
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
1,201
School/Daycare
No
MCL Violations
8
Monitoring Violations
462
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 24 2014
Nitrate MR 19 2024
1,2,4-Trichlorobenzene MR 8 2020
cis-1,2-Dichloroethylene MR 8 2020
Xylenes, Total MR 8 2020
DICHLOROMETHANE MR 8 2020
o-Dichlorobenzene MR 8 2020
p-Dichlorobenzene MR 8 2020
Vinyl chloride MR 8 2020
1,1-Dichloroethylene MR 8 2020
trans-1,2-Dichloroethylene MR 8 2020
1,1,1-Trichloroethane MR 8 2020
1,2-Dichloroethane MR 8 2020
Carbon tetrachloride MR 8 2020
1,2-Dichloropropane MR 8 2020
Trichloroethylene MR 8 2020
1,1,2-Trichloroethane MR 8 2020
Tetrachloroethylene MR 8 2020
CHLOROBENZENE MR 8 2020
Benzene MR 8 2020
Toluene MR 8 2020
Ethylbenzene MR 8 2020
Styrene MR 8 2020
Gross Alpha, Excl. Radon and U MR 8 2020
Coliform (TCR) MCL 8 2015
Revised Total Coliform Rule RPT 8 2025
Endrin MR 7 2020
BHC-GAMMA MR 7 2020
Methoxychlor MR 7 2020
Toxaphene MR 7 2020

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 4 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
lithium 7/11/2024 63.0000 µg/L 9 µg/L Detected
PFHpA 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 7/11/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFDoA 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
NEtFOSAA 7/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBS 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOS 7/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 7/11/2024 <0.002 µg/L 0.002 µg/L Not Detected
11Cl-PF3OUdS 7/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 7/11/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 7/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
NFDHA 7/11/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFTrDA 7/11/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFOA 7/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFBA 7/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpS 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFTA 7/11/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFEESA 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 7/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
8:2 FTS 7/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 7/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
NFDHA 7/11/2024 <0.02 µg/L 0.02 µg/L Not Detected
ADONA 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 7/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 7/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 7/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFPeA 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 7/11/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFEESA 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeS 7/11/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFTrDA 7/11/2024 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 7/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
NMeFOSAA 7/11/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFMBA 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
lithium 7/11/2024 61.0000 µg/L 9 µg/L Detected
HFPO-DA 7/11/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHpA 7/11/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 7/11/2024 <0.004 µg/L 0.004 µg/L Not Detected

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 Quechan Utility.

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 090400089 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

09 Drinking Water Authority

09's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find 09 regulator via EPA SDWIS

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 Revised Total Coliform Rule RPT 8 SDWIS / 090400089 / 8000
2025 E. COLI MR 5 SDWIS / 090400089 / 3014
2025 Groundwater Rule TT 4 SDWIS / 090400089 / 0700
2025 Nitrite MR 3 SDWIS / 090400089 / 1041
2024 Nitrate MR 19 SDWIS / 090400089 / 1040
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / 090400089 / 5200
2021 Public Notice Other 4 SDWIS / 090400089 / 7500
2020 1,2,4-Trichlorobenzene MR 8 SDWIS / 090400089 / 2378
2020 cis-1,2-Dichloroethylene MR 8 SDWIS / 090400089 / 2380
2020 Xylenes, Total MR 8 SDWIS / 090400089 / 2955
2020 DICHLOROMETHANE MR 8 SDWIS / 090400089 / 2964
2020 o-Dichlorobenzene MR 8 SDWIS / 090400089 / 2968
2020 p-Dichlorobenzene MR 8 SDWIS / 090400089 / 2969
2020 Vinyl chloride MR 8 SDWIS / 090400089 / 2976
2020 1,1-Dichloroethylene MR 8 SDWIS / 090400089 / 2977

How Quechan Utility Compares

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

Metric Quechan Utility 09 avg Federal benchmark
Total violations 623 149.5 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 13 10.4 Indicates a contaminant exceeded a federal MCL
PFAS detection 1 compound 73.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 5,660 1,720 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 323 regulated public water systems in 09.

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 Quechan Utility water safe to drink? ▼
Quechan Utility (PWS ID: 090400089) has 623 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 5,660 people using Groundwater sources.
How many people does Quechan Utility serve? ▼
Quechan Utility serves 5,660 people in Yuma, 09. It is a Native American-owned system using Groundwater water sources with 1,201 service connections.
What type of violations does Quechan Utility have? ▼
Quechan Utility has 623 total violations: 13 health-based violations (MCL exceedances or treatment failures), 462 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Quechan Utility water? ▼
Yes. UCMR5 testing detected 1 PFAS compound in Quechan Utility's water supply: lithium. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Quechan Utility use? ▼
Quechan Utility 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). 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 PlainWater Editorial