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TALIESIN WEST

Arizona — Non-Transient Non-Community — PWSID: AZ0407072

System Information

PWSIDAZ0407072
System NameTALIESIN WEST
System TypeNon-Transient Non-Community
Water SourceGround Water
Activity StatusActive
Owner TypeMixed
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedOct 5, 1979
Last ReportedNov 17, 2025

Location & Contact

StateArizona
CitySCOTTSDALE
ZIP Code85621
AddressATTN: FINANCE DEPARTMENT
OrganizationFRANK LLOYD WRIGHT FOUNDATION
Phone480-860-2700

Population & Service

Population Served85
Service Connections1

Drinking Water Violations (171)

This water system has 171 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, 2025 — Lead and Copper Rule MR No No — TT — Unaddressed — Lead and Copper Rule
Dec 20, 2024 — Public Notice Other No No — — — Resolved Jan 29, 2025 Public Notice Rule and Revised PN Rule
Dec 20, 2024 — Public Notice Other No No — — — Resolved Jan 29, 2025 Public Notice Rule and Revised PN Rule
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved Jan 2, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved Jan 2, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved Jan 2, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS TT Yes No — — — Resolved Jan 2, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS TT Yes No — — — Resolved Jan 2, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS TT Yes No — — — Resolved Jan 2, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS TT Yes No — — — Resolved Jan 2, 2025 Lead and Copper Rule Revisions
Oct 17, 2024 — LEAD AND COPPER RULE REVISIONS RPT No No — — — Resolved Jan 2, 2025 Lead and Copper Rule Revisions
Jun 1, 2022 — Revised Total Coliform Rule RPT No No — — — Resolved Jul 25, 2022 Revised Total Coliform Rule
Jun 1, 2022 — Revised Total Coliform Rule RPT No No — — — Resolved Jul 25, 2022 Revised Total Coliform Rule
Oct 11, 2021 — Lead and Copper Rule MR No No — TT — Resolved Dec 1, 2021 Lead and Copper Rule
Oct 11, 2021 — Lead and Copper Rule MR No No — TT — Resolved Dec 1, 2021 Lead and Copper Rule
Oct 1, 2021 Dec 31, 2021 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2021 Dec 31, 2021 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2021 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020 Mar 31, 2020 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2020 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020 — Lead and Copper Rule MR No No — TT — Resolved Jan 1, 2020 Lead and Copper Rule
Jan 1, 2020 Mar 31, 2020 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2020 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2020 — Lead and Copper Rule MR No No — TT — Resolved Jan 1, 2020 Lead and Copper Rule
Jan 1, 2019 — Lead and Copper Rule MR No No — TT — Resolved Apr 12, 2019 Lead and Copper Rule
Jan 1, 2019 — Lead and Copper Rule MR No No — TT — Resolved Apr 12, 2019 Lead and Copper Rule
Nov 3, 2017 — Lead and Copper Rule MR No No — TT — Resolved Sep 30, 2017 Lead and Copper Rule
Nov 3, 2017 — Lead and Copper Rule MR No No — TT — Resolved Sep 30, 2017 Lead and Copper Rule
Jan 1, 2016 Mar 31, 2016 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2016 Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2015 Dec 31, 2015 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2015 — Lead and Copper Rule MR No No — TT — Resolved May 26, 2016 Lead and Copper Rule
Sep 1, 2015 — Lead and Copper Rule MR No No — TT — Resolved May 26, 2016 Lead and Copper Rule
Sep 1, 2015 — Lead and Copper Rule MR No No — TT — Resolved May 26, 2016 Lead and Copper Rule
Apr 1, 2015 Jun 30, 2015 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015 Mar 31, 2015 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2015 Mar 31, 2015 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2015 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 Sep 30, 2014 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2014 Arsenic Rule
Jul 1, 2014 Sep 30, 2014 Arsenic MR No Yes — 0.010 mg/L — Resolved Sep 30, 2014 Arsenic Rule
Jul 1, 2014 Sep 30, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2014 Jun 30, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Mar 31, 2014 Chlorine MR No Yes — 4.0 mg/L — Resolved Mar 31, 2014 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014 Jan 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2014 Total Coliform Rule
Jan 1, 2014 Jan 31, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2014 Total Coliform Rule
Oct 1, 2013 Dec 31, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Dec 31, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2013 Sep 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Sep 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2013 Jun 30, 2013 Chlorine MR No Yes — 4.0 mg/L — Resolved Jun 30, 2013 Stage 1 Disinfectants and Disinfection Byproducts 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
Jan 1, 2013 — Lead and Copper Rule MR No No — TT — Resolved Feb 28, 2014 Lead and Copper Rule
Jan 1, 2013 — Lead and Copper Rule MR No No — TT — Resolved Feb 28, 2014 Lead and Copper Rule
Jan 1, 2013 Jan 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved Jan 31, 2013 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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