THIM UTILITY COMPANY - RANCHO VISTA

Arizona — Community Water System — PWSID: AZ0410351

System Information

PWSID	AZ0410351
System Name	THIM UTILITY COMPANY - RANCHO VISTA
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Private
EPA Region	09
Serves School	No
Wholesaler	No
First Reported	Aug 19, 1995
Last Reported	Nov 17, 2025

Location & Contact

State	Arizona
City	TUCSON
ZIP Code	85754
Address	ATT SW UTILITY MANAGEMENT - COMPLIANCE
Organization	THIM WATER CO
Phone	520-275-9551

Population & Service

Population Served	105
Service Connections	43

Drinking Water Violations (112)

This water system has 112 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
Sep 7, 2024	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 18, 2024	Lead and Copper Rule
Sep 7, 2024	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Nov 18, 2024	Lead and Copper Rule
Oct 2, 2019	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Oct 2, 2019	Consumer Confidence Rule
Oct 2, 2019	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Oct 2, 2019	Consumer Confidence Rule
Jul 1, 2019	Sep 30, 2019	Chlorine	MR	No	Yes	—	4.0 mg/L	—	Resolved	Sep 30, 2019	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2019	Sep 30, 2019	Chlorine	MR	No	Yes	—	4.0 mg/L	—	Resolved	Sep 30, 2019	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2019	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 15, 2019	Consumer Confidence Rule
Jul 1, 2019	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Aug 15, 2019	Consumer Confidence Rule
Mar 1, 2013	Mar 31, 2013	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Mar 31, 2013	Total Coliform Rule
Mar 1, 2013	Mar 31, 2013	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Mar 31, 2013	Total Coliform Rule
Feb 1, 2013	Feb 28, 2013	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Feb 28, 2013	Total Coliform Rule
Feb 1, 2013	Feb 28, 2013	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Feb 28, 2013	Total Coliform Rule
Sep 1, 2009	Sep 30, 2009	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2009	Total Coliform Rule
Sep 1, 2009	Sep 30, 2009	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2009	Total Coliform Rule
Jul 1, 2008	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 8, 2008	Consumer Confidence Rule
Jul 1, 2007	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 8, 2008	Consumer Confidence Rule
Oct 1, 2006	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 8, 2009	Lead and Copper Rule
Sep 1, 2006	Sep 30, 2006	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 2006	Total Coliform Rule
Aug 1, 2006	Aug 31, 2006	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Aug 31, 2006	Total Coliform Rule
Jul 1, 2006	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 8, 2008	Consumer Confidence Rule
Jan 1, 2005	Dec 31, 2005	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2005	Nitrate Rule
Jan 1, 2005	Dec 31, 2005	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 2005	Nitrate Rule
Jul 1, 2004	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jun 14, 2005	Consumer Confidence Rule
Jul 1, 2003	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jun 14, 2005	Consumer Confidence Rule
Jul 1, 2002	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jun 14, 2005	Consumer Confidence Rule
Jul 1, 2000	Sep 30, 2000	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Sep 30, 2000	Nitrate Rule
Apr 1, 2000	Jun 30, 2000	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Jun 30, 2000	Nitrate Rule
Sep 1, 1999	Sep 30, 1999	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Sep 30, 1999	Total Coliform Rule
Jan 1, 1999	Dec 31, 1999	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1999	Nitrate Rule
Jan 1, 1998	Dec 31, 2000	cis-1,2-Dichloroethylene	MR	No	Yes	—	0.07 mg/L	—	Resolved	Dec 31, 2000	Volatile Organic Chemicals
Jan 1, 1998	Dec 31, 2000	ETHYLENE DIBROMIDE	MR	No	Yes	—	0.00005 mg/L	—	Resolved	Dec 31, 2000	Synthetic Organic Chemicals
Jan 1, 1998	Dec 31, 2000	Glyphosate	MR	No	Yes	—	0.7 mg/L	—	Resolved	Dec 31, 2000	Synthetic Organic Chemicals
Jan 1, 1998	Dec 31, 2000	CHLOROBENZENE	MR	No	Yes	—	0.1 mg/L	—	Resolved	Dec 31, 2000	Volatile Organic Chemicals
Jan 1, 1998	Dec 31, 2000	Heptachlor epoxide	MR	No	Yes	—	0.0002 mg/L	—	Resolved	Dec 31, 2000	Synthetic Organic Chemicals
Jan 1, 1998	Dec 31, 2000	Simazine	MR	No	Yes	—	0.004 mg/L	—	Resolved	Dec 31, 2000	Synthetic Organic Chemicals
Jan 1, 1998	Dec 31, 2000	Heptachlor epoxide	MR	No	Yes	—	0.0002 mg/L	—	Resolved	Dec 31, 2000	Synthetic Organic Chemicals
Jan 1, 1998	Dec 31, 1998	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1998	Nitrate Rule
Jan 1, 1998	Dec 31, 2000	Glyphosate	MR	No	Yes	—	0.7 mg/L	—	Resolved	Dec 31, 2000	Synthetic Organic Chemicals
Jan 1, 1998	Dec 31, 2000	2,4-D	MR	No	Yes	—	0.07 mg/L	—	Resolved	Dec 31, 2000	Synthetic Organic Chemicals
Jan 1, 1998	Dec 31, 2000	DICHLOROMETHANE	MR	No	Yes	—	0.005 mg/L	—	Resolved	Dec 31, 2000	Volatile Organic Chemicals
Jan 1, 1998	Dec 31, 2000	Toxaphene	MR	No	Yes	—	0.003 mg/L	—	Resolved	Dec 31, 2000	Synthetic Organic Chemicals
Jan 1, 1998	Dec 31, 2000	Carbon tetrachloride	MR	No	Yes	—	0.005 mg/L	—	Resolved	Dec 31, 2000	Volatile Organic Chemicals
Jan 1, 1998	Dec 31, 2000	Endrin	MR	No	Yes	—	0.002 mg/L	—	Resolved	Dec 31, 2000	Synthetic Organic Chemicals
Jan 1, 1998	Dec 31, 2000	2,4,5-TP	MR	No	Yes	—	0.05 mg/L	—	Resolved	Dec 31, 2000	Synthetic Organic Chemicals
Jan 1, 1998	Dec 31, 2000	p-Dichlorobenzene	MR	No	Yes	—	0.075 mg/L	—	Resolved	Dec 31, 2000	Volatile Organic Chemicals
Jan 1, 1998	Dec 31, 2000	Di(2-ethylhexyl) phthalate	MR	No	Yes	—	0.006 mg/L	—	Resolved	Dec 31, 2000	Synthetic Organic Chemicals
Jan 1, 1998	Dec 31, 2000	o-Dichlorobenzene	MR	No	Yes	—	0.6 mg/L	—	Resolved	Dec 31, 2000	Volatile Organic Chemicals
Jan 1, 1998	Dec 31, 2000	Toluene	MR	No	Yes	—	1 mg/L	—	Resolved	Dec 31, 2000	Volatile Organic Chemicals
Jan 1, 1998	Dec 31, 2000	Carbofuran	MR	No	Yes	—	0.04 mg/L	—	Resolved	Dec 31, 2000	Synthetic Organic Chemicals
Jan 1, 1998	Dec 31, 2000	1,1,1-Trichloroethane	MR	No	Yes	—	0.2 mg/L	—	Resolved	Dec 31, 2000	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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