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FLORISSANT WSD

Colorado — Community Water System — PWSID: CO0160175

System Information

PWSIDCO0160175
System NameFLORISSANT WSD
System TypeCommunity Water System
Water SourceGround Water Under Influence
Activity StatusActive
Owner TypeLocal
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedMay 24, 1993
Last ReportedNov 17, 2025

Location & Contact

StateColorado
CityFLORISSANT
ZIP Code80816
Address293 MESA DR
OrganizationROOK, JOAN
Phone719-238-2260

Population & Service

Population Served250
Service Connections95

Drinking Water Violations (1,146)

This water system has 1,146 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 13, 2025 — Public Notice Other No No — — — Resolved Oct 17, 2025 Public Notice Rule and Revised PN Rule
Oct 13, 2025 — Public Notice Other No No — — — Resolved Oct 17, 2025 Public Notice Rule and Revised PN Rule
Jul 1, 2025 Sep 30, 2025 TTHM MR No Yes — 0.080 mg/L — Archived Sep 30, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 Sep 30, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Archived Sep 30, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 Sep 30, 2025 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Archived Sep 30, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 Sep 30, 2025 TTHM MR No Yes — 0.080 mg/L — Archived Sep 30, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved Oct 25, 2024 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved Oct 25, 2024 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved Oct 25, 2024 Lead and Copper Rule Revisions
Aug 6, 2024 — TTHM MR No No — 0.080 mg/L — Resolved Nov 7, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 6, 2024 — TTHM MR No No — 0.080 mg/L — Resolved Nov 7, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 6, 2024 — TTHM MR No No — 0.080 mg/L — Resolved Nov 7, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Aug 6, 2024 — TTHM MR No No — 0.080 mg/L — Resolved Nov 7, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Jul 31, 2024 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2024 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jul 1, 2024 Jul 31, 2024 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2024 Surface Water Treatment Rule
Jul 1, 2024 Jul 31, 2024 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2024 Surface Water Treatment Rule
Jul 1, 2024 Jul 31, 2024 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2024 Surface Water Treatment Rule
Jul 1, 2024 Jul 31, 2024 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2024 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jul 1, 2024 Jul 31, 2024 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2024 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jun 7, 2024 — Public Notice Other No No — — — Resolved Aug 29, 2024 Public Notice Rule and Revised PN Rule
Jun 7, 2024 — Public Notice Other No No — — — Resolved Aug 29, 2024 Public Notice Rule and Revised PN Rule
Apr 2, 2024 — TTHM MR No No — 0.080 mg/L — Resolved May 14, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 2, 2024 — TTHM MR No No — 0.080 mg/L — Resolved May 14, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 2, 2024 — TTHM MR No No — 0.080 mg/L — Resolved May 14, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Mar 1, 2024 Mar 31, 2024 E. COLI MR No No — — — Resolved Mar 31, 2024 Long Term 2 Enhanced Surface Water Treatment Rule
Mar 1, 2024 Mar 31, 2024 E. COLI MR No No — — — Resolved Mar 31, 2024 Long Term 2 Enhanced Surface Water Treatment Rule
Mar 1, 2024 Mar 31, 2024 E. COLI MR No No — — — Resolved Mar 31, 2024 Long Term 2 Enhanced Surface Water Treatment Rule
Feb 1, 2024 Feb 29, 2024 E. COLI MR No Yes — — — Resolved Feb 27, 2024 Long Term 2 Enhanced Surface Water Treatment Rule
Feb 1, 2024 Feb 29, 2024 E. COLI MR No Yes — — — Resolved Feb 27, 2024 Long Term 2 Enhanced Surface Water Treatment Rule
Feb 1, 2024 Feb 29, 2024 E. COLI MR No Yes — — — Resolved Feb 27, 2024 Long Term 2 Enhanced Surface Water Treatment Rule
Jan 1, 2024 Mar 31, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Mar 31, 2024 Nitrate Rule
Jan 1, 2024 Mar 31, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Mar 31, 2024 Nitrate Rule
Jan 1, 2024 Mar 31, 2024 TTHM MCL Yes No .088 MG/L 0.080 mg/L .08 Resolved Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Mar 31, 2024 Nitrate Rule
Jan 1, 2024 Mar 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 TTHM MCL Yes No .088 MG/L 0.080 mg/L .08 Resolved Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 TTHM MCL Yes No .088 MG/L 0.080 mg/L .08 Resolved Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2024 Mar 31, 2024 TTHM MCL Yes No .088 MG/L 0.080 mg/L .08 Resolved Mar 31, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Oct 5, 2023 Lead and Copper Rule
Oct 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Oct 5, 2023 Lead and Copper Rule
Oct 1, 2023 — Lead and Copper Rule MR No No — TT — Resolved Oct 5, 2023 Lead and Copper Rule
Sep 1, 2023 Sep 30, 2023 Interim Enhanced Surface Water Treatment Rule MR No No — — — Resolved Sep 11, 2023 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Sep 1, 2023 Sep 30, 2023 Interim Enhanced Surface Water Treatment Rule MR No No — — — Resolved Sep 11, 2023 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Sep 1, 2023 Sep 30, 2023 Interim Enhanced Surface Water Treatment Rule MR No No — — — Resolved Sep 11, 2023 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Sep 1, 2023 Sep 30, 2023 Interim Enhanced Surface Water Treatment Rule MR No No — — — Resolved Sep 11, 2023 Interim and Long Term 1 Enhanced Surface Water Treatment 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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