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LOUISVILLE CITY OF

Colorado — Community Water System — PWSID: CO0107487

System Information

PWSIDCO0107487
System NameLOUISVILLE 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
CityLOUISVILLE
ZIP Code80027
Address1955 N WASHINGTON AVE
OrganizationVENETTE, GREG
Phone720-600-9577

Population & Service

Population Served20,975
Service Connections7,368

Drinking Water Violations (137)

This water system has 137 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 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved Oct 17, 2024 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved Oct 17, 2024 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved Oct 17, 2024 Lead and Copper Rule Revisions
Dec 1, 2021 Dec 31, 2021 Surface Water Treatment Rule TT Yes No — — — Resolved Dec 31, 2021 Surface Water Treatment Rule
Dec 1, 2021 Dec 31, 2021 Surface Water Treatment Rule TT Yes No — — — Resolved Dec 31, 2021 Surface Water Treatment Rule
Dec 1, 2021 Dec 31, 2021 Surface Water Treatment Rule TT Yes No — — — Resolved Dec 31, 2021 Surface Water Treatment Rule
Dec 1, 2021 Dec 31, 2021 Surface Water Treatment Rule TT Yes No — — — Resolved Dec 31, 2021 Surface Water Treatment Rule
Dec 1, 2021 Dec 31, 2021 Surface Water Treatment Rule TT Yes No — — — Resolved Dec 31, 2021 Surface Water Treatment Rule
Dec 1, 2021 Dec 31, 2021 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Dec 31, 2021 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Dec 1, 2021 Dec 31, 2021 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Dec 31, 2021 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Dec 1, 2021 Dec 31, 2021 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Dec 31, 2021 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Dec 1, 2021 Dec 31, 2021 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Dec 31, 2021 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Dec 1, 2021 Dec 31, 2021 Interim Enhanced Surface Water Treatment Rule TT Yes No — — — Resolved Dec 31, 2021 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Apr 1, 2018 Apr 30, 2018 E. COLI MR No Yes — — — Resolved Apr 30, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Apr 1, 2018 Apr 30, 2018 E. COLI MR No Yes — — — Resolved Apr 30, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Apr 1, 2018 Apr 30, 2018 E. COLI MR No Yes — — — Resolved Apr 30, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Apr 1, 2018 Apr 30, 2018 E. COLI MR No Yes — — — Resolved Apr 30, 2018 Long Term 2 Enhanced Surface Water Treatment Rule
Jul 1, 2017 Jul 31, 2017 E. COLI MR No Yes — — — Resolved Jul 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jul 1, 2017 Jul 31, 2017 E. COLI MR No Yes — — — Resolved Jul 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jul 1, 2017 Jul 31, 2017 E. COLI MR No Yes — — — Resolved Jul 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jul 1, 2017 Jul 31, 2017 E. COLI MR No Yes — — — Resolved Jul 31, 2017 Long Term 2 Enhanced Surface Water Treatment Rule
Jan 1, 2017 Dec 31, 2017 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Xylenes, Total MR No Yes — 10 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2017 Volatile Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2017 Volatile 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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