Desert Diamond Why
Arizona — Non-Transient Non-Community — PWSID: 090400234
System Information
| PWSID | 090400234 |
| System Name | Desert Diamond Why |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 30, 2002 |
| Last Reported | Dec 31, 2025 |
Location & Contact
| State | Arizona |
| City | Tucson |
| ZIP Code | 85734 |
| Address | P.O. Box 22230 |
| Organization | Tohono O'odham Gaming Enterprise |
| Phone | 5202947777 |
Population & Service
| Population Served | 362 |
| Service Connections | 88 |
Drinking Water Violations (45)
This water system has 45 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, 2024 | Dec 31, 2024 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Archived | Dec 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 | Dec 31, 2024 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Archived | Dec 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2024 | Dec 31, 2024 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Archived | Dec 31, 2024 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jul 1, 2010 | Sep 30, 2010 | Arsenic | MCL | Yes | No | .0128 MG/L | 0.010 mg/L | — | Resolved | Sep 30, 2010 | Arsenic Rule |
| Apr 1, 2010 | Jun 30, 2010 | Arsenic | MCL | Yes | No | .0128 MG/L | 0.010 mg/L | — | Resolved | Jun 30, 2010 | Arsenic Rule |
| Jan 1, 2010 | Mar 31, 2010 | Arsenic | MCL | Yes | No | .01598 MG/L | 0.010 mg/L | — | Resolved | Mar 31, 2010 | Arsenic Rule |
| Oct 1, 2009 | Dec 31, 2009 | Arsenic | MCL | Yes | No | .01772 MG/L | 0.010 mg/L | — | Resolved | Dec 31, 2009 | Arsenic Rule |
| Sep 1, 2009 | Sep 30, 2009 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2009 | Total Coliform Rule |
| Aug 1, 2009 | Aug 31, 2009 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2009 | Total Coliform Rule |
| Jul 1, 2009 | Sep 30, 2009 | Arsenic | MCL | Yes | No | .0415 MG/L | 0.010 mg/L | — | Resolved | Sep 30, 2009 | Arsenic Rule |
| Jul 1, 2009 | Sep 30, 2009 | Arsenic | MCL | Yes | No | .01617 MG/L | 0.010 mg/L | — | Resolved | Sep 30, 2009 | Arsenic Rule |
| Oct 1, 2007 | Dec 31, 2007 | Arsenic | MCL | Yes | No | .28557 MG/L | 0.010 mg/L | — | Resolved | Dec 31, 2007 | Arsenic Rule |
| Apr 1, 2007 | Jun 30, 2007 | Arsenic | MCL | Yes | No | .223 MG/L | 0.010 mg/L | — | Resolved | Jun 30, 2007 | Arsenic Rule |
| Oct 1, 2006 | Dec 31, 2006 | Arsenic | MCL | Yes | No | .26 MG/L | 0.010 mg/L | — | Resolved | Dec 31, 2006 | Arsenic Rule |
| Jun 1, 2006 | Jun 30, 2006 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2006 | Total Coliform Rule |
| Jan 1, 2005 | Dec 31, 2005 | Arsenic | MCL | Yes | No | .32 MG/L | 0.010 mg/L | — | Resolved | Dec 31, 2005 | Arsenic Rule |
| Oct 1, 2004 | Oct 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2004 | Total Coliform Rule |
| Apr 1, 2004 | Apr 30, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2004 | Total Coliform Rule |
| Jun 1, 2001 | Jun 30, 2001 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2001 | Total Coliform Rule |
| Oct 1, 2000 | Oct 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2000 | Total Coliform Rule |
| Apr 1, 2000 | Jun 30, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Jun 30, 2000 | Total Coliform Rule |
| Jan 1, 2000 | Mar 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2000 | Total Coliform Rule |
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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.