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WELCH PWA

Oklahoma — Community Water System — PWSID: OK2001801

System Information

PWSIDOK2001801
System NameWELCH PWA
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region06
Serves SchoolNo
WholesalerNo
First ReportedMar 11, 1980
Last ReportedNov 14, 2025

Location & Contact

StateOklahoma
CityWELCH
ZIP Code74369
AddressGlen Walker, Mayor
OrganizationWELCH PWA
Phone918-788-3616

Population & Service

Population Served800
Service Connections406

Drinking Water Violations (542)

This water system has 542 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Jul 1, 2025 — Consumer Confidence Rule Other No No — — — Unaddressed — Consumer Confidence Rule
Jul 1, 2025 — Lead and Copper Rule MR No No — TT — Resolved Sep 18, 2025 Lead and Copper Rule
Jul 1, 2025 — Lead and Copper Rule MR No No — TT — Resolved Sep 18, 2025 Lead and Copper Rule
Jul 1, 2025 — Lead and Copper Rule MR No No — TT — Resolved Sep 18, 2025 Lead and Copper Rule
Jan 1, 2025 — Lead and Copper Rule MR No No — TT — Resolved Sep 18, 2025 Lead and Copper Rule
Jan 1, 2025 — Lead and Copper Rule MR No No — TT — Resolved Sep 18, 2025 Lead and Copper Rule
Jan 1, 2025 — Lead and Copper Rule MR No No — TT — Resolved Sep 18, 2025 Lead and Copper Rule
Jul 1, 2024 Sep 30, 2024 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Endrin MR No Yes — 0.002 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Combined Radium (-226 and -228) MCL Yes No 6 PCI/L 5 pCi/L 5 Resolved Sep 30, 2024 Radionuclides and Revised Rad Rule
Jul 1, 2024 Sep 30, 2024 Atrazine MR No Yes — 0.003 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Atrazine MR No Yes — 0.003 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Atrazine MR No Yes — 0.003 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Endrin MR No Yes — 0.002 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Endrin MR No Yes — 0.002 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Endrin MR No Yes — 0.002 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Glyphosate MR No Yes — 0.7 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Glyphosate MR No Yes — 0.7 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Glyphosate MR No Yes — 0.7 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Combined Radium (-226 and -228) MCL Yes No 6 PCI/L 5 pCi/L 5 Resolved Sep 30, 2024 Radionuclides and Revised Rad Rule
Jul 1, 2024 Sep 30, 2024 Endothall MR No Yes — 0.1 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Diquat MR No Yes — 0.02 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Simazine MR No Yes — 0.004 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Atrazine MR No Yes — 0.003 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Dinoseb MR No Yes — 0.007 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Simazine MR No Yes — 0.004 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Dinoseb MR No Yes — 0.007 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Glyphosate MR No Yes — 0.7 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Simazine MR No Yes — 0.004 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Endothall MR No Yes — 0.1 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Diquat MR No Yes — 0.02 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Dinoseb MR No Yes — 0.007 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Diquat MR No Yes — 0.02 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Endothall MR No Yes — 0.1 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Dinoseb MR No Yes — 0.007 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals
Jul 1, 2024 Sep 30, 2024 Diquat MR No Yes — 0.02 mg/L — Resolved Sep 30, 2024 Synthetic Organic Chemicals

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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