TALIESIN WEST
Arizona — Non-Transient Non-Community — PWSID: AZ0407072
System Information
| PWSID | AZ0407072 |
| System Name | TALIESIN WEST |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Mixed |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Oct 5, 1979 |
| Last Reported | Mar 12, 2026 |
Location & Contact
| State | Arizona |
| City | SCOTTSDALE |
| ZIP Code | 85621 |
| Address | ATTN: FINANCE DEPARTMENT |
| Organization | FRANK LLOYD WRIGHT FOUNDATION |
| Phone | 480-860-2700 |
Population & Service
| Population Served | 85 |
| Service Connections | 1 |
Drinking Water Violations (199)
This water system has 199 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 | — | MR | No | No | — | TT | — | Unaddressed | — | — | |
| Dec 20, 2024 | — | Other | No | No | — | — | — | Resolved | Jan 29, 2025 | — | |
| Dec 20, 2024 | — | Other | No | No | — | — | — | Resolved | Jan 29, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Jan 2, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Jan 2, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Jan 2, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Jan 2, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Jan 2, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Jan 2, 2025 | — | |
| Oct 17, 2024 | — | TT | Yes | No | — | — | — | Resolved | Jan 2, 2025 | — | |
| Oct 17, 2024 | — | RPT | No | No | — | — | — | Resolved | Jan 2, 2025 | — | |
| Jun 1, 2022 | — | RPT | No | No | — | — | — | Resolved | Jul 25, 2022 | — | |
| Jun 1, 2022 | — | RPT | No | No | — | — | — | Resolved | Jul 25, 2022 | — | |
| Oct 11, 2021 | — | MR | No | No | — | TT | — | Resolved | Dec 1, 2021 | — | |
| Oct 11, 2021 | — | MR | No | No | — | TT | — | Resolved | Dec 1, 2021 | — | |
| Oct 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Oct 1, 2021 | Dec 31, 2021 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2021 | — | |
| Jan 1, 2020 | — | MR | No | No | — | TT | — | Resolved | Jan 1, 2020 | — | |
| Jan 1, 2020 | — | MR | No | No | — | TT | — | Resolved | Jan 1, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2020 | Mar 31, 2020 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2020 | — | |
| Jan 1, 2019 | — | MR | No | No | — | TT | — | Resolved | Apr 12, 2019 | — | |
| Jan 1, 2019 | — | MR | No | No | — | TT | — | Resolved | Apr 12, 2019 | — | |
| Nov 3, 2017 | — | MR | No | No | — | TT | — | Resolved | Sep 30, 2017 | — | |
| Nov 3, 2017 | — | MR | No | No | — | TT | — | Resolved | Sep 30, 2017 | — | |
| Jan 1, 2016 | Mar 31, 2016 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2016 | — | |
| Oct 1, 2015 | Dec 31, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2015 | — | |
| Sep 1, 2015 | — | MR | No | No | — | TT | — | Resolved | May 26, 2016 | — | |
| Sep 1, 2015 | — | MR | No | No | — | TT | — | Resolved | May 26, 2016 | — | |
| Sep 1, 2015 | — | MR | No | No | — | TT | — | Resolved | May 26, 2016 | — | |
| Apr 1, 2015 | Jun 30, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2015 | — | |
| Apr 1, 2015 | Jun 30, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Jan 1, 2015 | Mar 31, 2015 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2015 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2014 | — | |
| Apr 1, 2014 | Jun 30, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2014 | — | |
| Jan 1, 2014 | Jan 31, 2014 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2014 | — | |
| Jan 1, 2014 | Jan 31, 2014 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2014 | — | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Mar 31, 2014 | — | |
| Oct 1, 2013 | Dec 31, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2013 | — | |
| Jul 1, 2013 | Sep 30, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Sep 30, 2013 | — | |
| Apr 1, 2013 | Jun 30, 2013 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Jun 30, 2013 | — | |
| Feb 1, 2013 | Feb 28, 2013 | MR | No | No | — | 5% of samples | — | Resolved | Feb 28, 2013 | — | |
| Feb 1, 2013 | Feb 28, 2013 | MR | No | No | — | 5% of samples | — | Resolved | Feb 28, 2013 | — | |
| Jan 1, 2013 | Jan 31, 2013 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2013 | — | |
| Jan 1, 2013 | — | MR | No | No | — | TT | — | Resolved | Feb 28, 2014 | — | |
| Jan 1, 2013 | Jan 31, 2013 | MR | No | No | — | 5% of samples | — | Resolved | Jan 31, 2013 | — |
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.