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LAFAYETTE CITY OF

Colorado — Community Water System — PWSID: CO0107473

System Information

PWSIDCO0107473
System NameLAFAYETTE CITY OF
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypeLocal
EPA Region08
Serves SchoolNo
WholesalerNo
First ReportedMar 20, 1979
Last ReportedNov 17, 2025

Location & Contact

StateColorado
CityLAFAYETTE
ZIP Code80026
Address1290 S PUBLIC ROAD
OrganizationARTHUR, JEFF
Phone303-661-1282

Population & Service

Population Served28,700
Service Connections9,666

Drinking Water Violations (262)

This water system has 262 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 Sep 30, 2025 Chlorine MR No Yes — 4.0 mg/L — Resolved Aug 12, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 Sep 30, 2025 Chlorine MR No Yes — 4.0 mg/L — Resolved Aug 12, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 Jul 31, 2025 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2025 Surface Water Treatment Rule
Jul 1, 2025 — Revised Total Coliform Rule RPT No No — — — Resolved Aug 12, 2025 Revised Total Coliform Rule
Jul 1, 2025 Sep 30, 2025 Chlorine MR No Yes — 4.0 mg/L — Resolved Aug 12, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 — Revised Total Coliform Rule RPT No No — — — Resolved Aug 12, 2025 Revised Total Coliform Rule
Jul 1, 2025 — Revised Total Coliform Rule RPT No No — — — Resolved Aug 12, 2025 Revised Total Coliform Rule
Jul 1, 2025 Jul 31, 2025 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2025 Surface Water Treatment Rule
Jul 1, 2025 Jul 31, 2025 Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2025 Surface Water Treatment Rule
Jul 1, 2021 — Consumer Confidence Rule Other No No — — — Resolved Jul 14, 2021 Consumer Confidence Rule
Jul 1, 2021 — Consumer Confidence Rule Other No No — — — Resolved Jul 14, 2021 Consumer Confidence Rule
Jul 1, 2021 — Consumer Confidence Rule Other No No — — — Resolved Jul 14, 2021 Consumer Confidence Rule
Jul 1, 2020 Jul 31, 2020 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2020 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jul 1, 2020 Jul 31, 2020 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2020 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jul 1, 2020 Jul 31, 2020 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Jul 31, 2020 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Nov 8, 2019 — Revised Total Coliform Rule Other No No — — — Resolved Dec 20, 2019 Revised Total Coliform Rule
Nov 8, 2019 — Revised Total Coliform Rule Other No No — — — Resolved Dec 20, 2019 Revised Total Coliform Rule
Nov 8, 2019 — Revised Total Coliform Rule Other No No — — — Resolved Dec 20, 2019 Revised Total Coliform Rule
Jan 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Apr 3, 2018 Lead and Copper Rule
Jan 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Apr 3, 2018 Lead and Copper Rule
Jan 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Apr 3, 2018 Lead and Copper Rule
Jan 1, 2018 — Lead and Copper Rule MR No No — TT — Resolved Apr 3, 2018 Lead and Copper Rule
Feb 1, 2017 Feb 28, 2017 E. COLI MR No Yes — — — Resolved Feb 28, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Feb 1, 2017 Feb 28, 2017 E. COLI MR No Yes — — — Resolved Feb 28, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Feb 1, 2017 Feb 28, 2017 E. COLI MR No Yes — — — Resolved Feb 28, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Feb 1, 2017 Feb 28, 2017 E. COLI MR No Yes — — — Resolved Feb 28, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Feb 1, 2017 Feb 28, 2017 E. COLI MR No Yes — — — Resolved Feb 28, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jan 1, 2017 Dec 31, 2017 Antimony, Total MR No Yes — 0.006 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Antimony, Total MR No Yes — 0.006 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Mercury MR No Yes — 0.002 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2017 Arsenic Rule
Jan 1, 2017 Dec 31, 2017 Cadmium MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Cadmium MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Beryllium, Total MR No Yes — 0.004 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Antimony, Total MR No Yes — 0.006 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Chromium MR No Yes — 0.1 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Chromium MR No Yes — 0.1 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Mercury MR No Yes — 0.002 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Beryllium, Total MR No Yes — 0.004 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Antimony, Total MR No Yes — 0.006 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Antimony, Total MR No Yes — 0.006 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Chromium MR No Yes — 0.1 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Cadmium MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Cadmium MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Beryllium, Total MR No Yes — 0.004 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Mercury MR No Yes — 0.002 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Beryllium, Total MR No Yes — 0.004 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Beryllium, Total MR No Yes — 0.004 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Mercury MR No Yes — 0.002 mg/L — Resolved Dec 31, 2017 Inorganic Chemicals
Jan 1, 2017 Dec 31, 2017 Mercury MR No Yes — 0.002 mg/L — Resolved Dec 31, 2017 Inorganic 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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