EAST LARIMER COUNTY WD

Colorado — Community Water System — PWSID: CO0135233

System Information

PWSID	CO0135233
System Name	EAST LARIMER COUNTY WD
System Type	Community Water System
Water Source	Surface Water Purchased
Activity Status	Active
Owner Type	Local
EPA Region	08
Serves School	No
Wholesaler	No
First Reported	Mar 20, 1979
Last Reported	Nov 17, 2025

Location & Contact

State	Colorado
City	FORT COLLINS
ZIP Code	80522
Address	—
Organization	SIDDENS, RANDY
Phone	970-493-2044

Population & Service

Population Served	27,944
Service Connections	8,531

Drinking Water Violations (37)

This water system has 37 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 30, 2022	—	Public Notice	Other	No	No	—	—	—	Resolved	Nov 30, 2022	Public Notice Rule and Revised PN Rule
Jul 30, 2022	—	Public Notice	Other	No	No	—	—	—	Resolved	Nov 30, 2022	Public Notice Rule and Revised PN Rule
Jul 1, 2022	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Nov 30, 2022	Consumer Confidence Rule
Jul 1, 2022	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Nov 30, 2022	Consumer Confidence Rule
Jul 1, 2022	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Nov 30, 2022	Consumer Confidence Rule
Apr 30, 2022	—	Public Notice	Other	No	No	—	—	—	Resolved	May 24, 2022	Public Notice Rule and Revised PN Rule
Apr 30, 2022	—	Public Notice	Other	No	No	—	—	—	Resolved	May 24, 2022	Public Notice Rule and Revised PN Rule
Jan 30, 2022	—	Public Notice	Other	No	No	—	—	—	Resolved	Mar 4, 2022	Public Notice Rule and Revised PN Rule
Jan 30, 2022	—	Public Notice	Other	No	No	—	—	—	Resolved	Mar 4, 2022	Public Notice Rule and Revised PN Rule
Jan 1, 2022	Mar 31, 2022	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Mar 31, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022	Mar 31, 2022	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Mar 31, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022	Mar 31, 2022	Total Haloacetic Acids (HAA5)	MR	No	Yes	—	0.060 mg/L	—	Resolved	Mar 31, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022	Mar 31, 2022	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Mar 31, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022	Mar 31, 2022	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Mar 31, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2022	Mar 31, 2022	TTHM	MR	No	Yes	—	0.080 mg/L	—	Resolved	Mar 31, 2022	Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 30, 2021	—	Public Notice	Other	No	No	—	—	—	Resolved	Mar 4, 2022	Public Notice Rule and Revised PN Rule
Oct 30, 2021	—	Public Notice	Other	No	No	—	—	—	Resolved	Mar 4, 2022	Public Notice Rule and Revised PN Rule
Oct 1, 2021	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Oct 22, 2021	Lead and Copper Rule
Oct 1, 2021	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Oct 22, 2021	Lead and Copper Rule
Oct 1, 2021	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Oct 22, 2021	Lead and Copper Rule
Oct 1, 2012	Oct 31, 2012	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2012	Total Coliform Rule
Oct 1, 2012	Oct 31, 2012	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2012	Total Coliform Rule
Oct 1, 2012	Oct 31, 2012	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 2012	Total Coliform Rule
Jun 1, 2011	Jun 30, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2011	Total Coliform Rule
Jun 1, 2011	Jun 30, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2011	Total Coliform Rule
Jun 1, 2011	Jun 30, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2011	Total Coliform Rule
Jun 1, 2011	Jun 30, 2011	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2011	Total Coliform Rule
Apr 1, 2011	Jun 30, 2011	Chlorine	MR	No	Yes	—	4.0 mg/L	—	Resolved	Jun 30, 2011	Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2011	Jun 30, 2011	Chlorine	MR	No	Yes	—	4.0 mg/L	—	Resolved	Jun 30, 2011	Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2011	Jun 30, 2011	Chlorine	MR	No	Yes	—	4.0 mg/L	—	Resolved	Jun 30, 2011	Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2011	Jun 30, 2011	Chlorine	MR	No	Yes	—	4.0 mg/L	—	Resolved	Jun 30, 2011	Stage 1 Disinfectants and Disinfection Byproducts Rule
Aug 1, 1998	Aug 31, 1998	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Aug 31, 1998	Total Coliform Rule
Aug 1, 1998	Aug 31, 1998	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Aug 31, 1998	Total Coliform Rule
Aug 1, 1998	Aug 31, 1998	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Aug 31, 1998	Total Coliform Rule
Nov 1, 1994	Nov 30, 1994	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 1994	Total Coliform Rule
Nov 1, 1994	Nov 30, 1994	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 1994	Total Coliform Rule
Nov 1, 1994	Nov 30, 1994	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Nov 30, 1994	Total Coliform 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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