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CASITAS DE CASTILIAN

Arizona — Community Water System — PWSID: AZ0420531

System Information

PWSIDAZ0420531
System NameCASITAS DE CASTILIAN
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeMixed
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedOct 5, 1979
Last ReportedNov 17, 2025

Location & Contact

StateArizona
CityTUCSON
ZIP Code85704
Address6840 N ORACLE RD.
OrganizationASSOCIA ARIZONA
Phone520-742-5674

Population & Service

Population Served167
Service Connections120

Drinking Water Violations (119)

This water system has 119 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 Sep 30, 2025 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Archived Sep 30, 2025 Synthetic Organic Chemicals
Dec 17, 2024 — Revised Total Coliform Rule RPT No No — — — Resolved Dec 16, 2024 Revised Total Coliform Rule
Dec 17, 2024 — Revised Total Coliform Rule RPT No No — — — Resolved Dec 16, 2024 Revised Total Coliform Rule
Nov 29, 2024 — E. COLI MR No Yes — — — Resolved Jan 9, 2025 Ground Water Rule
Nov 29, 2024 — E. COLI MR No Yes — — — Resolved Jan 9, 2025 Ground Water Rule
Nov 29, 2024 — E. COLI MR No Yes — — — Resolved Jan 9, 2025 Ground Water Rule
Nov 29, 2024 — E. COLI MR No Yes — — — Resolved Jan 9, 2025 Ground Water Rule
Jul 1, 2024 — Consumer Confidence Rule Other No No — — — Resolved Oct 10, 2024 Consumer Confidence Rule
Jul 1, 2024 — Consumer Confidence Rule Other No No — — — Resolved Oct 10, 2024 Consumer Confidence Rule
Jul 1, 2023 Jul 31, 2023 Revised Total Coliform Rule MCL Yes No — — — Resolved Jul 25, 2023 Revised Total Coliform Rule
Jul 1, 2023 Jul 31, 2023 Revised Total Coliform Rule MCL Yes No — — — Resolved Jul 25, 2023 Revised Total Coliform Rule
Jul 1, 2023 Jul 31, 2023 Revised Total Coliform Rule MCL Yes No — — — Resolved Jul 25, 2023 Revised Total Coliform Rule
Jul 1, 2023 Jul 31, 2023 Revised Total Coliform Rule MCL Yes No — — — Resolved Jul 25, 2023 Revised Total Coliform Rule
Jul 1, 2023 Jul 31, 2023 Revised Total Coliform Rule MCL Yes No — — — Resolved Jul 25, 2023 Revised Total Coliform Rule
Jul 1, 2022 — Consumer Confidence Rule Other No No — — — Resolved Jul 11, 2022 Consumer Confidence Rule
Jul 1, 2022 — Consumer Confidence Rule Other No No — — — Resolved Jul 11, 2022 Consumer Confidence Rule
Mar 1, 2022 — Revised Total Coliform Rule RPT No No — — — Resolved Apr 27, 2022 Revised Total Coliform Rule
Feb 5, 2022 — E. COLI MR No Yes — — — Resolved Apr 27, 2022 Ground Water Rule
Feb 5, 2022 — E. COLI MR No Yes — — — Resolved Apr 27, 2022 Ground Water Rule
Oct 1, 2021 — Lead and Copper Rule MR No No — TT — Resolved Oct 27, 2022 Lead and Copper Rule
Oct 1, 2021 — Lead and Copper Rule MR No No — TT — Resolved Oct 27, 2022 Lead and Copper Rule
Oct 1, 2021 — Lead and Copper Rule MR No No — TT — Resolved Oct 27, 2022 Lead and Copper Rule
Jul 1, 2021 — Consumer Confidence Rule Other No No — — — Resolved Sep 1, 2021 Consumer Confidence Rule
Jul 1, 2021 — Consumer Confidence Rule Other No No — — — Resolved Sep 1, 2021 Consumer Confidence Rule
Jun 6, 2020 — Revised Total Coliform Rule Other No No — — — Resolved Jun 10, 2020 Revised Total Coliform Rule
May 7, 2020 — Revised Total Coliform Rule Other No No — — — Resolved Jun 5, 2020 Revised Total Coliform Rule
May 7, 2020 — Revised Total Coliform Rule Other No No — — — Resolved Jun 5, 2020 Revised Total Coliform Rule
Jul 1, 2018 — Consumer Confidence Rule Other No No — — — Resolved Aug 1, 2018 Consumer Confidence Rule
Jul 1, 2018 — Consumer Confidence Rule Other No No — — — Resolved Aug 1, 2018 Consumer Confidence Rule
Jul 1, 2017 — Consumer Confidence Rule Other No No — — — Resolved Sep 14, 2017 Consumer Confidence Rule
Jan 1, 2013 Jan 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2013 Total Coliform Rule
Jan 1, 2013 Jan 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2013 Total Coliform Rule
Jul 1, 2010 — Consumer Confidence Rule Other No No — — — Resolved Mar 14, 2011 Consumer Confidence Rule
Jul 1, 2007 — Consumer Confidence Rule Other No No — — — Resolved Jul 18, 2007 Consumer Confidence Rule
Nov 1, 2006 Nov 30, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2006 Total Coliform Rule
Jul 1, 2005 — Consumer Confidence Rule Other No No — — — Resolved Jul 14, 2005 Consumer Confidence Rule
Oct 1, 2002 — Lead and Copper Rule MR No No — TT — Resolved Aug 31, 2006 Lead and Copper Rule
Jul 1, 2002 — Consumer Confidence Rule Other No No — — — Resolved Mar 31, 2003 Consumer Confidence Rule
Jan 1, 2002 Dec 31, 2002 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2002 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2002 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2002 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2002 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2002 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2002 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2002 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2002 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2002 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2002 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2002 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2002 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2002 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2002 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2002 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2002 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2002 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2002 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2002 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2002 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2002 Volatile Organic Chemicals
Jan 1, 2002 Dec 31, 2002 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2002 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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