States ›Arizona ›Yuma County ›Wellton

Wellton, AZ Tap Water Quality 2026

Water quality report for Wellton, AZ — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Wellton's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Wellton Town Of PWSID: AZ0414022 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 0.52 ppb, 3% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Wellton earns a C for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 0.52 ppb — 3% of the federal action level
PFAS never sampled at this system
244 violations since 2015, 63 health-based
No violations currently open
Wellton's lead level vs. all Arizona community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 0.52 ppb — 3% of the federal action level
✓ Lower lead than 95% of Arizona utilities
Population Served
2287
~1573 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
0
244 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
3% of EPA action level
0.52 ppb
Action level: 15 ppb
The 90th-percentile lead result is 0.52 ppb, 3% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Public Notice OTHER — — 2026 Unaddressed
Public Notice OTHER — — 2026 Unaddressed
TTHM MCL EXCEEDANCE 0.098 MG/L 0.080 mg/L 2026 Archived
Lead and Copper Rule MONITORING AND REPORTING — TT 2026 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2025 Resolved
Public Notice OTHER — — 2025 Resolved
Public Notice OTHER — — 2025 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Resolved
TTHM MCL EXCEEDANCE 0.099 MG/L 0.080 mg/L 2025 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2025 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2025 Resolved
CARBON, TOTAL TREATMENT TECHNIQUE 0.72 RATIO TT 2025 Archived
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2025 Resolved
Public Notice OTHER — — 2025 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2025 Resolved
CARBON, TOTAL TREATMENT TECHNIQUE 0.18 RATIO TT 2025 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2025 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2025 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2025 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2025 Resolved
TTHM MCL EXCEEDANCE 0.081 MG/L 0.080 mg/L 2025 Archived
Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2025 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2025 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2025 Resolved
CARBON, TOTAL TREATMENT TECHNIQUE 0.05 RATIO TT 2025 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2025 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2025 Resolved
TTHM MCL EXCEEDANCE 0.081 MG/L 0.080 mg/L 2025 Archived
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2025 Resolved
CARBON, TOTAL TREATMENT TECHNIQUE 0.11 RATIO TT 2025 Archived
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Resolved
TTHM MCL EXCEEDANCE 0.082 MG/L 0.080 mg/L 2024 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2024 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2024 Resolved
Public Notice OTHER — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Public Notice OTHER — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
TTHM MCL EXCEEDANCE 0.097 MG/L 0.080 mg/L 2024 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2024 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2024 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2024 Resolved
Public Notice OTHER — — 2024 Resolved
Public Notice OTHER — — 2024 Resolved
TTHM MCL EXCEEDANCE 0.095 MG/L 0.080 mg/L 2024 Archived
TTHM MCL EXCEEDANCE 0.102 MG/L 0.080 mg/L 2024 Archived
Public Notice OTHER — — 2023 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2023 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
TTHM MCL EXCEEDANCE 0.096 MG/L 0.080 mg/L 2023 Archived
CARBON, TOTAL MONITORING AND REPORTING — TT 2023 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2023 Resolved
TTHM MCL EXCEEDANCE 0.104 MG/L 0.080 mg/L 2023 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2023 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
TTHM MCL EXCEEDANCE 0.085 MG/L 0.080 mg/L 2023 Archived
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2023 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2023 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2023 Resolved
TTHM MCL EXCEEDANCE 0.121 MG/L 0.080 mg/L 2023 Archived
CARBON, TOTAL MONITORING AND REPORTING — TT 2023 Resolved
Public Notice OTHER — — 2022 Resolved
Public Notice OTHER — — 2022 Resolved
Consumer Confidence Rule OTHER — — 2022 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
TTHM MCL EXCEEDANCE 0.123 MG/L 0.080 mg/L 2022 Archived
Revised Total Coliform Rule REPORTING FAILURE — — 2022 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2022 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2022 Resolved
Public Notice OTHER — — 2022 Resolved
TTHM MCL EXCEEDANCE 0.096 MG/L 0.080 mg/L 2022 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2022 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2022 Resolved
Public Notice OTHER — — 2022 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2022 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2022 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2022 Resolved
Public Notice OTHER — — 2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2022 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2022 Resolved
TTHM MCL EXCEEDANCE 0.112 MG/L 0.080 mg/L 2022 Archived
Public Notice OTHER — — 2022 Resolved
Public Notice OTHER — — 2022 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2022 Resolved
Public Notice OTHER — — 2022 Resolved
TTHM MCL EXCEEDANCE 0.115 MG/L 0.080 mg/L 2022 Archived
Revised Total Coliform Rule REPORTING FAILURE — — 2022 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2022 Resolved
TTHM MCL EXCEEDANCE 0.124 MG/L 0.080 mg/L 2021 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2021 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2021 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2021 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Resolved
TTHM MCL EXCEEDANCE 0.099 MG/L 0.080 mg/L 2021 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2021 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Resolved
TTHM MCL EXCEEDANCE 0.131 MG/L 0.080 mg/L 2021 Archived
Public Notice OTHER — — 2021 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2021 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2021 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.133 MG/L 0.080 mg/L 2021 Archived
Public Notice OTHER — — 2020 Resolved
Public Notice OTHER — — 2020 Resolved
Public Notice OTHER — — 2020 Resolved
Public Notice OTHER — — 2020 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2020–2021 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2020–2021 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2020 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2020 Resolved
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2020 Archived
Surface Water Treatment Rule MONITORING AND REPORTING — — 2020 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2020 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2020 Resolved
Public Notice OTHER — — 2020 Resolved
Consumer Confidence Rule OTHER — — 2020 Resolved
TTHM MCL EXCEEDANCE 0.117 MG/L 0.080 mg/L 2020 Archived
Public Notice OTHER — — 2020 Resolved
TTHM MCL EXCEEDANCE 0.119 MG/L 0.080 mg/L 2020 Archived
Public Notice OTHER — — 2020 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2020 Resolved
TTHM MCL EXCEEDANCE 0.101 MG/L 0.080 mg/L 2020 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2020 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Resolved
Consumer Confidence Rule OTHER — — 2019 Resolved
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2019 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2019 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2019 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2019 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2019 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Resolved
TTHM MCL EXCEEDANCE 0.097 MG/L 0.080 mg/L 2019 Archived
Public Notice OTHER — — 2019 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2019 Resolved
TTHM MCL EXCEEDANCE 0.093 MG/L 0.080 mg/L 2019 Archived
CARBON, TOTAL MONITORING AND REPORTING — TT 2019 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2019 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2019 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2019 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2019 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2019 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2018 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2018 Resolved
TTHM MCL EXCEEDANCE 0.096 MG/L 0.080 mg/L 2018 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2018 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2018 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2018 Resolved
E. COLI MONITORING AND REPORTING — 0 2018 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2018 Resolved
E. COLI MONITORING AND REPORTING — 0 2018 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2018 Resolved
E. COLI MONITORING AND REPORTING — 0 2018 Resolved
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2018 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2018 Archived
E. COLI MONITORING AND REPORTING — 0 2018 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2018 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2018 Resolved
E. COLI MONITORING AND REPORTING — 0 2018 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2018 Resolved
TTHM MCL EXCEEDANCE 0.094 MG/L 0.080 mg/L 2018 Archived
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2018 Resolved
E. COLI MONITORING AND REPORTING — 0 2017–2018 Resolved
E. COLI MONITORING AND REPORTING — 0 2017–2018 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2017 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2017 Resolved
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2017 Resolved
TTHM MCL EXCEEDANCE 0.095 MG/L 0.080 mg/L 2017 Archived
Revised Total Coliform Rule REPORTING FAILURE — — 2017 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2017 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2017 Resolved
Revised Total Coliform Rule REPORTING FAILURE — — 2017 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2017 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2017 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
CARBON, TOTAL TREATMENT TECHNIQUE — TT 2017 Resolved
CARBON, TOTAL MONITORING AND REPORTING — TT 2017 Archived
TTHM MCL EXCEEDANCE 0.093 MG/L 0.080 mg/L 2017 Archived
Revised Total Coliform Rule REPORTING FAILURE — — 2017 Resolved
TTHM MCL EXCEEDANCE 0.095 MG/L 0.080 mg/L 2017 Archived
Revised Total Coliform Rule REPORTING FAILURE — — 2017 Resolved
TTHM MCL EXCEEDANCE 0.093 MG/L 0.080 mg/L 2017 Archived
Revised Total Coliform Rule REPORTING FAILURE — — 2016 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2016 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2016 Resolved
TTHM MCL EXCEEDANCE 0.095 MG/L 0.080 mg/L 2016 Archived
Consumer Confidence Rule OTHER — — 2016 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2016 Resolved
TTHM MCL EXCEEDANCE 0.102 MG/L 0.080 mg/L 2016 Archived
Consumer Confidence Rule OTHER — — 2016 Resolved
TTHM MCL EXCEEDANCE 0.086 MG/L 0.080 mg/L 2016 Archived
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2016 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2016 Resolved
TTHM MCL EXCEEDANCE 0.099 MG/L 0.080 mg/L 2016 Archived
TTHM MCL EXCEEDANCE 0.083 MG/L 0.080 mg/L 2015 Archived
Consumer Confidence Rule OTHER — — 2015 Resolved
TTHM MCL EXCEEDANCE 0.089 MG/L 0.080 mg/L 2015 Archived
Surface Water Treatment Rule MONITORING AND REPORTING — — 2015 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
TTHM MCL EXCEEDANCE 0.104 MG/L 0.080 mg/L 2015 Archived
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
TTHM MCL EXCEEDANCE 0.111 MG/L 0.080 mg/L 2015 Archived
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

244 violations are on record since 2015, of which 63 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Wellton Town Of
PWSID AZ0414022
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 2,287
Service connections 1,573
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Wellton tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 0.52 ppb, 3% of the action level.
Does Wellton water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Wellton? ▼
Wellton Town Of (PWSID AZ0414022). Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2025-12-10. Inspectors recorded 2 significant deficiencies.

What Should Wellton Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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