GRAND CANYON NATIONAL PARK
Arizona — Community Water System — PWSID: AZ0403702
System Information
| PWSID | AZ0403702 |
| System Name | GRAND CANYON NATIONAL PARK |
| System Type | Community Water System |
| 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 | Mar 12, 2026 |
Location & Contact
| State | Arizona |
| City | GRAND CANYON |
| ZIP Code | 86023 |
| Address | PO BOX 129 |
| Organization | STONE, TREACY |
| Phone | — |
Population & Service
| Population Served | 16,590 |
| Service Connections | 630 |
Drinking Water Violations (447)
This water system has 447 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 19, 2025 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Sep 2, 2025 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Jul 1, 2025 | — | Other | No | No | — | — | — | Resolved | Jul 3, 2025 | — | |
| Jul 1, 2025 | — | Other | No | No | — | — | — | Resolved | Jul 3, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.075 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.075 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.075 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Jun 30, 2025 | — | |
| Apr 1, 2025 | Jun 30, 2025 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Jun 30, 2025 | — |
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.