MOUNT BAKER SCHOOL DISTRICT-DEMING
Washington — Non-Transient Non-Community — PWSID: WA5301468
System Information
| PWSID | WA5301468 |
| System Name | MOUNT BAKER SCHOOL DISTRICT-DEMING |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 10 |
| Serves School | Yes |
| Wholesaler | No |
| First Reported | Jul 30, 1992 |
| Last Reported | Dec 11, 2025 |
Location & Contact
| State | Washington |
| City | Deming |
| ZIP Code | 98244 |
| Address | PO Box 95 |
| Organization | MOUNT BAKER SCHOOL DISTRICT-DEMING |
| Phone | — |
Population & Service
| Population Served | 700 |
| Service Connections | 1 |
Drinking Water Violations (25)
This water system has 25 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, 2021 | Dec 31, 2021 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2021 | Dec 31, 2021 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2021 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 15, 2023 | Lead and Copper Rule |
| Jan 1, 2018 | Dec 31, 2018 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2018 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2018 | Dec 31, 2018 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2018 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2008 | Dec 31, 2010 | OXAMYL | MR | No | Yes | — | 0.2 mg/L | — | Archived | Dec 31, 2010 | Synthetic Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2010 | Aldicarb sulfone | MR | No | Yes | — | — | — | Archived | Dec 31, 2010 | Synthetic Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2010 | Aldicarb sulfoxide | MR | No | Yes | — | — | — | Archived | Dec 31, 2010 | Synthetic Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2010 | Aldicarb | MR | No | Yes | — | — | — | Archived | Dec 31, 2010 | Synthetic Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2010 | Carbofuran | MR | No | Yes | — | 0.04 mg/L | — | Archived | Dec 31, 2010 | Synthetic Organic Chemicals |
| Dec 1, 2005 | Dec 31, 2005 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Dec 31, 2005 | Total Coliform Rule |
| Oct 1, 2005 | Oct 31, 2005 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 2005 | Total Coliform Rule |
| Oct 1, 2004 | Oct 31, 2004 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Oct 31, 2004 | Total Coliform Rule |
| Nov 1, 2000 | Nov 30, 2000 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 2000 | Total Coliform Rule |
| Nov 1, 2000 | Nov 30, 2000 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 2000 | Total Coliform Rule |
| Nov 1, 2000 | Nov 30, 2000 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 2000 | Total Coliform Rule |
| Sep 1, 1999 | Sep 30, 1999 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Sep 30, 1999 | Total Coliform Rule |
| Jul 1, 1999 | Jul 31, 1999 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Jul 31, 1999 | Total Coliform Rule |
| Jan 1, 1994 | Jan 1, 2000 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jan 1, 2000 | Lead and Copper Rule |
| Jul 1, 1993 | Jul 31, 1993 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Jul 31, 1993 | Total Coliform Rule |
| Mar 1, 1993 | Mar 31, 1993 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | Mar 31, 1993 | Total Coliform Rule |
| Nov 1, 1992 | Nov 30, 1992 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Nov 30, 1992 | Total Coliform Rule |
| Oct 1, 1992 | Oct 31, 1992 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Oct 31, 1992 | Total Coliform Rule |
| Sep 1, 1992 | Sep 30, 1992 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Sep 30, 1992 | Total Coliform Rule |
| Aug 1, 1992 | Aug 31, 1992 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Aug 31, 1992 | Total Coliform Rule |
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.