WALNUT CANYON NATL MONUMENT
Arizona — Transient Non-Community — PWSID: AZ0403716
System Information
| PWSID | AZ0403716 |
| System Name | WALNUT CANYON NATL MONUMENT |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Federal |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Oct 5, 1979 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | Arizona |
| City | FLAGSTAFF |
| ZIP Code | 86004 |
| Address | 6400 N Hwy 89 |
| Organization | VAN DUNK, HEIDI |
| Phone | 928-526-1157 |
Population & Service
| Population Served | 700 |
| Service Connections | 1 |
Drinking Water Violations (21)
This water system has 21 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, 2014 | Dec 31, 2014 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2014 | Nitrate Rule |
| Jan 1, 2014 | Dec 31, 2014 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2014 | Nitrate Rule |
| Nov 1, 2013 | Nov 30, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2013 | Total Coliform Rule |
| Nov 1, 2013 | Nov 30, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2013 | Total Coliform Rule |
| Sep 1, 2012 | Sep 30, 2012 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2012 | Total Coliform Rule |
| Aug 19, 2012 | — | E. COLI | MR | No | Yes | — | — | — | Resolved | Jan 14, 2013 | Ground Water Rule |
| Aug 1, 2012 | Aug 31, 2012 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2012 | Total Coliform Rule |
| Aug 1, 2012 | Aug 31, 2012 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Aug 31, 2012 | Total Coliform Rule |
| Mar 1, 2012 | Mar 31, 2012 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2012 | Total Coliform Rule |
| Mar 1, 2012 | Mar 31, 2012 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2012 | Total Coliform Rule |
| Jan 1, 2012 | Dec 31, 2012 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2012 | Nitrate Rule |
| Jan 1, 2012 | Dec 31, 2012 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2012 | Nitrate Rule |
| May 1, 2011 | May 31, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2011 | Total Coliform Rule |
| May 1, 2011 | May 31, 2011 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2011 | Total Coliform Rule |
| Jan 1, 2011 | Dec 31, 2011 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2011 | Nitrate Rule |
| Jan 1, 2011 | Dec 31, 2011 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2011 | Nitrate Rule |
| Dec 1, 2010 | Dec 31, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2010 | Total Coliform Rule |
| Dec 1, 2010 | Dec 31, 2010 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2010 | Total Coliform Rule |
| Jan 1, 2000 | Dec 31, 2000 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2000 | Nitrate Rule |
| Jan 1, 1998 | Dec 31, 1998 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 1998 | Nitrate Rule |
| — | — | — | No | No | — | — | — | — | — | — |
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.