States ›Oklahoma ›Craig County ›Welch

Welch, OK Tap Water Quality 2026

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

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

Main Utility: Welch Pwa PWSID: OK2001801 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead was not detected and no violations are open. PFAS has never been sampled at this system.

B

Welch earns a B for water quality

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

Lead: not detected
PFAS never sampled at this system
89 violations since 2015, 36 health-based
No violations currently open
Welch's lead level vs. all Oklahoma community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of Oklahoma utilities
Population Served
622
~406 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
89 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Resolved
Consumer Confidence Rule OTHER — — 2025 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2024 Resolved
Endrin MONITORING AND REPORTING — 0.002 mg/L 2024 Resolved
BHC-GAMMA MONITORING AND REPORTING — 0.0002 mg/L 2024 Resolved
Methoxychlor MONITORING AND REPORTING — 0.04 mg/L 2024 Resolved
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2024 Resolved
Diquat MONITORING AND REPORTING — 0.02 mg/L 2024 Resolved
Endothall MONITORING AND REPORTING — 0.1 mg/L 2024 Resolved
Glyphosate MONITORING AND REPORTING — 0.7 mg/L 2024 Resolved
Di(2-ethylhexyl) adipate MONITORING AND REPORTING — 0.4 mg/L 2024 Resolved
OXAMYL MONITORING AND REPORTING — 0.2 mg/L 2024 Resolved
Simazine MONITORING AND REPORTING — 0.004 mg/L 2024 Resolved
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2024 Resolved
Picloram MONITORING AND REPORTING — 0.5 mg/L 2024 Resolved
Dinoseb MONITORING AND REPORTING — 0.007 mg/L 2024 Resolved
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2024 Resolved
Carbofuran MONITORING AND REPORTING — 0.04 mg/L 2024 Resolved
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2024 Resolved
LASSO MONITORING AND REPORTING — — 2024 Resolved
Heptachlor MONITORING AND REPORTING — 0.0004 mg/L 2024 Resolved
Heptachlor epoxide MONITORING AND REPORTING — 0.0002 mg/L 2024 Resolved
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2024 Resolved
2,4,5-TP MONITORING AND REPORTING — 0.05 mg/L 2024 Resolved
HEXACHLOROBENZENE MONITORING AND REPORTING — 0.001 mg/L 2024 Resolved
Benzo(a)pyrene MONITORING AND REPORTING — 0.0002 mg/L 2024 Resolved
Pentachlorophenol MONITORING AND REPORTING — 0.001 mg/L 2024 Resolved
1,2-DIBROMO-3-CHLOROPROPANE MONITORING AND REPORTING — 0.0002 mg/L 2024 Resolved
ETHYLENE DIBROMIDE MONITORING AND REPORTING — 0.00005 mg/L 2024 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 7 PCI/L 5 pCi/L 2024 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 7 PCI/L 5 pCi/L 2024 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 7 PCI/L 5 pCi/L 2023 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2023 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023–2024 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2023–2024 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2023 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2023 Archived
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2022 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2022 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2022 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 7 PCI/L 5 pCi/L 2022 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2022 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2021 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2021 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 8 PCI/L 5 pCi/L 2020 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 8 PCI/L 5 pCi/L 2020 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 9 PCI/L 5 pCi/L 2020 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 11 PCI/L 5 pCi/L 2020 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 11 PCI/L 5 pCi/L 2019 Archived
Gross Alpha, Excl. Radon and U MCL EXCEEDANCE 17 PCI/L 15 pCi/L 2019 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 10 PCI/L 5 pCi/L 2019 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 9 PCI/L 5 pCi/L 2019 Archived
Gross Alpha, Excl. Radon and U MCL EXCEEDANCE 18 PCI/L 15 pCi/L 2019 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2019 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2018 Archived
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2018 Resolved
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2018 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2018 Resolved
Gross Beta Particle Activity MONITORING AND REPORTING — 4 mrem/yr 2018 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2018 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 6 PCI/L 5 pCi/L 2018 Archived
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2018 Resolved
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2018 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2018 Resolved
Gross Beta Particle Activity MONITORING AND REPORTING — 4 mrem/yr 2018 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 7 PCI/L 5 pCi/L 2017 Archived
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2017 Resolved
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2017 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2017 Resolved
Gross Beta Particle Activity MONITORING AND REPORTING — 4 mrem/yr 2017 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 8 PCI/L 5 pCi/L 2017 Archived
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2017 Resolved
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2017 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2017 Resolved
Gross Beta Particle Activity MONITORING AND REPORTING — 4 mrem/yr 2017 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 8 PCI/L 5 pCi/L 2016 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 8 PCI/L 5 pCi/L 2016 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 9 PCI/L 5 pCi/L 2016 Archived
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2016 Resolved
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2016 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2016 Resolved
Gross Beta Particle Activity MONITORING AND REPORTING — 4 mrem/yr 2016 Resolved
Combined Radium (-226 and -228) MCL EXCEEDANCE 9 PCI/L 5 pCi/L 2016 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 10 PCI/L 5 pCi/L 2015 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 10 PCI/L 5 pCi/L 2015 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 10 PCI/L 5 pCi/L 2015 Archived
Combined Radium (-226 and -228) MCL EXCEEDANCE 9 PCI/L 5 pCi/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

89 violations are on record since 2015, of which 36 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Welch Pwa
PWSID OK2001801
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 622
Service connections 406
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Welch tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open.
Does Welch 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 Welch? ▼
Welch Pwa (PWSID OK2001801). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2026-02-04. No significant deficiencies were recorded.

What Should Welch 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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