SCUA Bylas
Arizona - Community Water System - PWSID: 090400110
System Information
| PWSID | 090400110 |
| System Name | SCUA Bylas |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 2, 1984 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Arizona |
| City | San Carlos |
| ZIP Code | 85550 |
| Address | P.O. Box O |
| Organization | San Carlos Apache Tribe |
| Phone | 9284752631 |
Population & Service
| Population Served | 3,160 |
| Service Connections | 573 |
Drinking Water Violations (517)
This water system has 517 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 10, 2025 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.007 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.002 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.7 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.07 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 10 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.2 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 5 pCi/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 30 ug/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 15 pCi/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.075 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.1 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 1 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.07 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.6 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Sep 30, 2025 | - | |
| Jul 1, 2025 | Sep 30, 2025 | MR | No | Yes | - | 0.005 mg/L | - | Archived | Sep 30, 2025 | - | |
| May 28, 2025 | Jun 30, 2025 | TT | Yes | No | - | - | - | Resolved | Jun 26, 2025 | - | |
| May 28, 2025 | Jun 30, 2025 | TT | Yes | No | - | - | - | Resolved | Jun 26, 2025 | - | |
| May 28, 2025 | Jun 30, 2025 | TT | Yes | No | - | - | - | Resolved | Jun 26, 2025 | - | |
| Nov 16, 2024 | - | RPT | No | No | - | - | - | Unaddressed | - | - | |
| Nov 16, 2024 | - | RPT | No | No | - | - | - | Unaddressed | - | - | |
| Aug 1, 2024 | Aug 31, 2024 | MCL | Yes | No | - | - | - | Resolved | Aug 31, 2024 | - | |
| Jul 1, 2024 | Sep 30, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2024 | - | |
| Apr 1, 2024 | Jun 30, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Mar 31, 2024 | - | |
| Oct 1, 2023 | Dec 31, 2023 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2023 | - | |
| Jun 1, 2023 | - | RPT | No | No | - | - | - | Resolved | Jul 1, 2023 | - | |
| May 1, 2023 | May 31, 2023 | MCL | Yes | No | - | - | - | Resolved | May 31, 2023 | - | |
| May 1, 2023 | May 31, 2023 | MCL | Yes | No | - | - | - | Resolved | May 31, 2023 | - | |
| Mar 4, 2023 | - | TT | Yes | No | - | - | - | Resolved | Jul 11, 2025 | - | |
| Mar 4, 2023 | - | TT | Yes | No | - | - | - | Resolved | Nov 8, 2024 | - | |
| Mar 4, 2023 | - | TT | Yes | No | - | - | - | Resolved | Apr 15, 2024 | - | |
| Mar 4, 2023 | - | TT | Yes | No | - | - | - | Resolved | Apr 15, 2024 | - | |
| Mar 4, 2023 | - | TT | Yes | No | - | - | - | Resolved | Jul 11, 2025 | - | |
| Mar 4, 2023 | - | Other | No | No | - | - | - | Resolved | Jul 1, 2024 | - | |
| Mar 4, 2023 | - | TT | Yes | No | - | - | - | Resolved | Nov 8, 2024 | - | |
| Mar 4, 2023 | - | TT | Yes | No | - | - | - | Resolved | Jul 11, 2025 | - | |
| Mar 4, 2023 | - | Other | No | No | - | - | - | Resolved | Jul 1, 2024 | - | |
| Mar 4, 2023 | - | Other | No | No | - | - | - | Resolved | Jul 1, 2024 | - | |
| Mar 4, 2023 | - | TT | Yes | No | - | - | - | Resolved | Apr 15, 2024 | - |
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.