TALIESIN WEST
PWS ID: AZ0407072 · SCOTTSDALE, Arizona 85621
Population Served
85
Total Violations
199
Health-Based Violations
10
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Public/Private
- Connections
- 1
- County
- Maricopa
- School/Daycare
- No
- MCL Violations
- 6
- Monitoring Violations
- 147
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 35 | 2021 |
| Coliform (TCR) | MR | 27 | 2014 |
| Lead and Copper Rule | MR | 20 | 2025 |
| Consumer Confidence Rule | Other | 12 | 2009 |
| Arsenic | MR | 11 | 2014 |
| Arsenic | MCL | 6 | 2010 |
| Nitrate | MR | 5 | 2005 |
| TTHM | MR | 5 | 2012 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2012 |
| LEAD AND COPPER RULE REVISIONS | TT | 4 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 4 | 2024 |
| 1,2,4-Trichlorobenzene | MR | 2 | 2003 |
| Public Notice | Other | 2 | 2024 |
| Revised Total Coliform Rule | RPT | 2 | 2022 |
| DICHLOROMETHANE | MR | 1 | 1998 |
| 1,1,2-Trichloroethane | MR | 1 | 1998 |
| Endrin | MR | 1 | 1998 |
| BHC-GAMMA | MR | 1 | 1998 |
| Methoxychlor | MR | 1 | 1998 |
| Dalapon | MR | 1 | 1998 |
| Diquat | MR | 1 | 1998 |
| Endothall | MR | 1 | 1998 |
| Di(2-ethylhexyl) adipate | MR | 1 | 1998 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 1998 |
| Dinoseb | MR | 1 | 1998 |
| Hexachlorocyclopentadiene | MR | 1 | 1998 |
| Carbofuran | MR | 1 | 1998 |
| Atrazine | MR | 1 | 1998 |
| Heptachlor | MR | 1 | 1998 |
| Heptachlor epoxide | MR | 1 | 1998 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.