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SHERIDAN LAKE WD

Colorado — Community Water System — PWSID: CO0131800

System Information

PWSIDCO0131800
System NameSHERIDAN LAKE WD
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedMar 20, 1979
Last ReportedNov 17, 2025

Location & Contact

StateColorado
CitySHERIDAN LAKE
ZIP Code81071
Address—
OrganizationCORNELIUS, DEBBIE
Phone719-691-4353

Population & Service

Population Served148
Service Connections64

Drinking Water Violations (704)

This water system has 704 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
Oct 1, 2025 — Lead and Copper Rule MR No No — TT — Unaddressed — Lead and Copper Rule
Oct 1, 2025 — Lead and Copper Rule MR No No — TT — Unaddressed — Lead and Copper Rule
Jul 28, 2025 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Jul 28, 2025 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Jun 6, 2025 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Jun 6, 2025 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Apr 28, 2025 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Apr 28, 2025 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Mar 8, 2025 — Public Notice Other No No — — — Resolved Apr 29, 2025 Public Notice Rule and Revised PN Rule
Mar 8, 2025 — Public Notice Other No No — — — Resolved Apr 29, 2025 Public Notice Rule and Revised PN Rule
Mar 6, 2025 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Mar 6, 2025 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Jan 28, 2025 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Jan 28, 2025 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Dec 8, 2024 — Public Notice Other No No — — — Resolved Apr 29, 2025 Public Notice Rule and Revised PN Rule
Dec 8, 2024 — Public Notice Other No No — — — Resolved Apr 29, 2025 Public Notice Rule and Revised PN Rule
Oct 28, 2024 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Oct 28, 2024 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS TT Yes No — — — Resolved May 15, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved May 15, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved May 15, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved May 15, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved May 15, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS TT Yes No — — — Resolved May 15, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS TT Yes No — — — Resolved May 15, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS TT Yes No — — — Resolved May 15, 2025 Lead and Copper Rule Revisions
Jul 28, 2024 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Jul 28, 2024 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Jul 27, 2024 — Groundwater Rule TT Yes No — — — Resolved Aug 20, 2025 Ground Water Rule
Jul 27, 2024 — Groundwater Rule TT Yes No — — — Resolved Aug 20, 2025 Ground Water Rule
Jul 27, 2024 — Groundwater Rule TT Yes No — — — Resolved Aug 20, 2025 Ground Water Rule
Jul 27, 2024 — Groundwater Rule TT Yes No — — — Resolved Aug 20, 2025 Ground Water Rule
Jul 27, 2024 — Groundwater Rule TT Yes No — — — Resolved Aug 20, 2025 Ground Water Rule
Jul 27, 2024 — Groundwater Rule TT Yes No — — — Resolved Aug 20, 2025 Ground Water Rule
Jul 27, 2024 — Groundwater Rule TT Yes No — — — Resolved Aug 20, 2025 Ground Water Rule
Jul 27, 2024 — Groundwater Rule TT Yes No — — — Resolved Aug 20, 2025 Ground Water Rule
Apr 28, 2024 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Apr 28, 2024 — Public Notice Other No No — — — Resolved Aug 7, 2025 Public Notice Rule and Revised PN Rule
Oct 1, 2023 Dec 31, 2023 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Oct 1, 2023 Dec 31, 2023 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Oct 1, 2023 Dec 31, 2023 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Oct 1, 2023 Dec 31, 2023 Combined Uranium MR No Yes — 30 ug/L — Resolved Dec 31, 2023 Radionuclides and Revised Rad Rule
Oct 1, 2023 Dec 31, 2023 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Dec 31, 2023 Synthetic Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Endothall MR No Yes — 0.1 mg/L — Resolved Jun 30, 2023 Synthetic Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Combined Uranium MCL Yes No 31.25 UG/L 30 ug/L 30 Resolved Jun 30, 2023 Radionuclides and Revised Rad Rule
Apr 1, 2023 Jun 30, 2023 Endothall MR No Yes — 0.1 mg/L — Resolved Jun 30, 2023 Synthetic Organic Chemicals
Apr 1, 2023 Jun 30, 2023 Combined Uranium MCL Yes No 31.25 UG/L 30 ug/L 30 Resolved Jun 30, 2023 Radionuclides and Revised Rad Rule

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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