TWIN FALLS CITY OF

Idaho — Community Water System — PWSID: ID5420058

System Information

PWSID	ID5420058
System Name	TWIN FALLS CITY OF
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Local
EPA Region	10
Serves School	No
Wholesaler	No
First Reported	Mar 13, 1980
Last Reported	Dec 19, 2025

Location & Contact

State	Idaho
City	TWIN FALLS
ZIP Code	83301
Address	119 SOUTH PARK AVE WEST
Organization	BOHLING, ROBERT L
Phone	208-736-1540

Population & Service

Population Served	56,121
Service Connections	19,273

Drinking Water Violations (157)

This water system has 157 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
Jan 1, 2023	Dec 31, 2023	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2023	Nitrate Rule
Jan 1, 2023	Dec 31, 2023	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2023	Nitrate Rule
Jan 1, 2023	Dec 31, 2023	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2023	Nitrate Rule
Jul 1, 2022	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 11, 2024	Lead and Copper Rule
Jul 1, 2022	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 11, 2024	Lead and Copper Rule
Jul 1, 2022	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 11, 2024	Lead and Copper Rule
Jul 1, 2022	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 11, 2024	Lead and Copper Rule
Jul 1, 2022	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 11, 2024	Lead and Copper Rule
Jul 1, 2022	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Dec 11, 2024	Lead and Copper Rule
Jan 1, 2022	Dec 31, 2022	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2022	Nitrate Rule
Jan 1, 2022	Dec 31, 2022	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2022	Nitrate Rule
Jan 1, 2022	Dec 31, 2022	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2022	Nitrate Rule
Feb 17, 2015	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Nov 16, 2023	Ground Water Rule
Feb 17, 2015	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Nov 16, 2023	Ground Water Rule
Feb 17, 2015	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Nov 16, 2023	Ground Water Rule
Feb 17, 2015	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Nov 16, 2023	Ground Water Rule
Feb 17, 2015	—	E. COLI	MR	No	Yes	—	—	—	Resolved	Nov 16, 2023	Ground Water Rule
Jan 1, 2014	Dec 31, 2022	Nitrite	MR	No	Yes	—	1 mg/L	—	Archived	Dec 31, 2022	Nitrate Rule
Jan 1, 2014	Dec 31, 2022	Nitrite	MR	No	Yes	—	1 mg/L	—	Archived	Dec 31, 2022	Nitrate Rule
Jul 12, 2012	—	Public Notice	Other	No	No	—	—	—	Resolved	Oct 30, 2012	Public Notice Rule and Revised PN Rule
May 5, 2012	—	Public Notice	Other	No	No	—	—	—	Resolved	Mar 30, 2012	Public Notice Rule and Revised PN Rule
May 5, 2012	—	Public Notice	Other	No	No	—	—	—	Resolved	Mar 31, 2012	Public Notice Rule and Revised PN Rule
Apr 1, 2012	Jun 30, 2012	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2012	Arsenic Rule
Apr 1, 2012	Jun 30, 2012	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2012	Arsenic Rule
Apr 1, 2012	Jun 30, 2012	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2012	Arsenic Rule
Apr 1, 2012	Jun 30, 2012	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Jun 30, 2012	Arsenic Rule
Mar 3, 2012	—	Public Notice	Other	No	No	—	—	—	Resolved	Apr 9, 2012	Public Notice Rule and Revised PN Rule
Mar 3, 2012	—	Public Notice	Other	No	No	—	—	—	Resolved	Apr 9, 2012	Public Notice Rule and Revised PN Rule
Jan 2, 2012	—	Public Notice	Other	No	No	—	—	—	Resolved	Apr 9, 2012	Public Notice Rule and Revised PN Rule
Jan 2, 2012	—	Public Notice	Other	No	No	—	—	—	Resolved	Apr 9, 2012	Public Notice Rule and Revised PN Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Jan 1, 2012	Mar 31, 2012	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Mar 31, 2012	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Oct 1, 2011	Dec 31, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Dec 31, 2011	Arsenic Rule
Jul 1, 2011	Sep 30, 2011	Arsenic	MCL	Yes	No	.011 MG/L	0.010 mg/L	.01	Resolved	Sep 30, 2011	Arsenic 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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