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BOULDER CITY OF

Colorado — Community Water System — PWSID: CO0107152

System Information

PWSIDCO0107152
System NameBOULDER 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
CityBOULDER
ZIP Code80302
Address1094 BETASSO RD
OrganizationSTODDARD, JON
Phone720-564-2320

Population & Service

Population Served166,080
Service Connections31,959

Drinking Water Violations (24)

This water system has 24 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, 2024 Oct 31, 2024 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2024 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Oct 1, 2024 Oct 31, 2024 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2024 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Oct 1, 2024 Oct 31, 2024 Interim Enhanced Surface Water Treatment Rule MR No Yes — — — Resolved Oct 31, 2024 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jun 1, 2022 Jun 30, 2022 Surface Water Treatment Rule MR No Yes — — — Resolved Jun 30, 2022 Surface Water Treatment Rule
Jun 1, 2022 Jun 30, 2022 Surface Water Treatment Rule MR No Yes — — — Resolved Jun 30, 2022 Surface Water Treatment Rule
Jun 1, 2022 Jun 30, 2022 Surface Water Treatment Rule MR No Yes — — — Resolved Jun 30, 2022 Surface Water Treatment Rule
Jun 1, 2022 Jun 30, 2022 Surface Water Treatment Rule MR No Yes — — — Resolved Jun 30, 2022 Surface Water Treatment Rule
Jul 1, 2017 Sep 30, 2017 Total Haloacetic Acids (HAA5) MCL Yes No .061 MG/L 0.060 mg/L .06 Resolved Sep 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2017 Sep 30, 2017 Total Haloacetic Acids (HAA5) MCL Yes No .061 MG/L 0.060 mg/L .06 Resolved Sep 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2017 Sep 30, 2017 Total Haloacetic Acids (HAA5) MCL Yes No .061 MG/L 0.060 mg/L .06 Resolved Sep 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2017 Jun 30, 2017 Total Haloacetic Acids (HAA5) MCL Yes No .06081 MG/L 0.060 mg/L — Resolved Jun 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2017 Jun 30, 2017 Total Haloacetic Acids (HAA5) MCL Yes No .06081 MG/L 0.060 mg/L — Resolved Jun 30, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2017 Jan 31, 2017 Surface Water Treatment Rule MR No No — — — Resolved Jan 31, 2017 Surface Water Treatment Rule
Jan 1, 2017 Jan 31, 2017 Surface Water Treatment Rule MR No No — — — Resolved Jan 31, 2017 Surface Water Treatment Rule
Jan 1, 2017 Jan 31, 2017 Surface Water Treatment Rule MR No No — — — Resolved Jan 31, 2017 Surface Water Treatment Rule
Jan 1, 2017 Jan 31, 2017 Surface Water Treatment Rule MR No No — — — Resolved Jan 31, 2017 Surface Water Treatment Rule
Dec 1, 2016 Dec 31, 2016 Surface Water Treatment Rule MR No No — — — Resolved Dec 31, 2016 Surface Water Treatment Rule
Dec 1, 2016 Dec 31, 2016 Surface Water Treatment Rule MR No No — — — Resolved Dec 31, 2016 Surface Water Treatment Rule
Dec 1, 2016 Dec 31, 2016 Surface Water Treatment Rule MR No No — — — Resolved Dec 31, 2016 Surface Water Treatment Rule
Dec 1, 2016 Dec 31, 2016 Surface Water Treatment Rule MR No No — — — Resolved Dec 31, 2016 Surface Water Treatment Rule
Oct 1, 2016 Oct 31, 2016 Surface Water Treatment Rule MR No No — — — Resolved Oct 31, 2016 Surface Water Treatment Rule
Oct 1, 2016 Oct 31, 2016 Surface Water Treatment Rule MR No No — — — Resolved Oct 31, 2016 Surface Water Treatment Rule
Oct 1, 2016 Oct 31, 2016 Surface Water Treatment Rule MR No No — — — Resolved Oct 31, 2016 Surface Water Treatment Rule
Oct 1, 2016 Oct 31, 2016 Surface Water Treatment Rule MR No No — — — Resolved Oct 31, 2016 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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