BLACK MOUNTAIN WATER DISTRICT
Oregon - Community Water System - PWSID: OR4100370
System Information
| PWSID | OR4100370 |
| System Name | BLACK MOUNTAIN WATER DISTRICT |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 12, 1979 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Oregon |
| City | HERMISTON |
| ZIP Code | 97838 |
| Address | 145 W MOORE AVE |
| Organization | BLACK MOUNTAIN WATER DISTRICT |
| Phone | 541-720-0514 |
Population & Service
| Population Served | 43 |
| Service Connections | 88 |
Drinking Water Violations (201)
This water system has 201 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, 2025 | Dec 31, 2025 | MR | No | Yes | - | - | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | - | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | - | - | Archived | Dec 31, 2025 | - | |
| Nov 1, 2024 | Nov 30, 2024 | MON | No | Yes | - | - | - | Resolved | Nov 30, 2024 | - | |
| Sep 1, 2023 | Sep 30, 2023 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2023 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Jul 21, 2023 | - | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2021 | - | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2021 | - | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2021 | - | |
| Oct 1, 2017 | - | MR | No | Yes | - | - | - | Resolved | Dec 30, 2019 | - | |
| Sep 29, 2017 | - | Other | No | No | - | - | - | Resolved | Feb 7, 2019 | - | |
| May 6, 2017 | - | MR | No | Yes | - | - | - | Resolved | Jun 23, 2017 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.0002 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.6 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 1 mg/L | - | Resolved | Oct 8, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 5 pCi/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.4 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.004 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 30 ug/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 2 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2019 | - |
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.