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GREELEY CITY OF

Colorado — Community Water System — PWSID: CO0162321

System Information

PWSIDCO0162321
System NameGREELEY 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
CityGREELEY
ZIP Code80631
Address1001 11TH AVE 2ND FLR
OrganizationJACKSON, MICHAELA
Phone970-350-9836

Population & Service

Population Served132,310
Service Connections29,000

Drinking Water Violations (42)

This water system has 42 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 Jul 31, 2025 Chlorite MR No Yes — 1.0 mg/L — Archived Jul 31, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 Jul 31, 2025 Chlorite MR No Yes — 1.0 mg/L — Archived Jul 31, 2025 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Oct 16, 2024 Lead and Copper Rule
Oct 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Oct 16, 2024 Lead and Copper Rule
Oct 1, 2024 — Lead and Copper Rule MR No No — TT — Resolved Oct 16, 2024 Lead and Copper Rule
Jun 1, 2023 Jun 30, 2023 Chlorite MR No Yes — 1.0 mg/L — Resolved Jun 30, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2023 Jun 30, 2023 Chlorite MR No Yes — 1.0 mg/L — Resolved Jun 30, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2023 Jun 30, 2023 Chlorite MR No Yes — 1.0 mg/L — Resolved Jun 30, 2023 Stage 1 Disinfectants and Disinfection Byproducts Rule
May 1, 2021 May 31, 2021 Chlorine dioxide MR No Yes — 0.8 mg/L — Resolved May 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
May 1, 2021 May 31, 2021 Chlorine dioxide MR No Yes — 0.8 mg/L — Resolved May 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
May 1, 2021 May 31, 2021 Chlorine dioxide MR No Yes — 0.8 mg/L — Resolved May 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
May 1, 2021 May 31, 2021 Chlorite MR No Yes — 1.0 mg/L — Resolved May 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
May 1, 2021 May 31, 2021 Chlorite MR No Yes — 1.0 mg/L — Resolved May 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
May 1, 2021 May 31, 2021 Chlorite MR No Yes — 1.0 mg/L — Resolved May 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2020 Dec 31, 2020 Lead and Copper Rule MR No No — TT — Resolved Dec 31, 2020 Lead and Copper Rule
Jul 1, 2020 Dec 31, 2020 Lead and Copper Rule MR No No — TT — Resolved Dec 31, 2020 Lead and Copper Rule
Jul 1, 2020 Dec 31, 2020 Lead and Copper Rule MR No No — TT — Resolved Dec 31, 2020 Lead and Copper Rule
Jul 1, 2013 Sep 30, 2013 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2013 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2012 Jul 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No No — — — Resolved Jul 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jul 1, 2012 Jul 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No No — — — Resolved Jul 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jul 1, 2012 Jul 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No No — — — Resolved Jul 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jul 1, 2012 Jul 31, 2012 Interim Enhanced Surface Water Treatment Rule MR No No — — — Resolved Jul 31, 2012 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jul 1, 2006 — Consumer Confidence Rule Other No No — — — Resolved Oct 3, 2006 Consumer Confidence Rule
Jun 1, 2004 Jun 30, 2004 Chlorine dioxide MR No Yes — 0.8 mg/L — Resolved Jun 30, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2004 Jun 30, 2004 Chlorine dioxide MR No Yes — 0.8 mg/L — Resolved Jun 30, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2004 Jun 30, 2004 Chlorine dioxide MR No Yes — 0.8 mg/L — Resolved Jun 30, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2004 Jun 30, 2004 Chlorine dioxide MR No Yes — 0.8 mg/L — Resolved Jun 30, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2004 Jun 30, 2004 Chlorite MR No No — 1.0 mg/L — Resolved Jun 30, 2004 Stage 1 Disinfectants and Disinfection Byproducts Rule
Dec 1, 2002 Dec 31, 2002 Chlorite MR No No — 1.0 mg/L — Resolved Dec 31, 2002 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2002 Jul 31, 2002 Chlorine dioxide MR No Yes — 0.8 mg/L — Resolved Jul 31, 2002 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2002 Jul 31, 2002 Chlorine dioxide MR No Yes — 0.8 mg/L — Resolved Jul 31, 2002 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2002 Jul 31, 2002 Chlorite MR No No — 1.0 mg/L — Resolved Jul 31, 2002 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2002 Jul 31, 2002 Chlorite MR No No — 1.0 mg/L — Resolved Jul 31, 2002 Stage 1 Disinfectants and Disinfection Byproducts Rule
May 1, 2002 May 31, 2002 Chlorite MR No Yes — 1.0 mg/L — Resolved May 31, 2002 Stage 1 Disinfectants and Disinfection Byproducts Rule
May 1, 2002 May 31, 2002 Chlorine dioxide MR No Yes — 0.8 mg/L — Resolved May 31, 2002 Stage 1 Disinfectants and Disinfection Byproducts 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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