KNAPPA WATER ASSOCIATION
Oregon — Community Water System — PWSID: OR4100061
System Information
| PWSID | OR4100061 |
| System Name | KNAPPA WATER ASSOCIATION |
| 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 | Dec 23, 2025 |
Location & Contact
| State | Oregon |
| City | ASTORIA |
| ZIP Code | 97103 |
| Address | 92755 ALLEN RD |
| Organization | KNAPPA WATER ASSOCIATION |
| Phone | 503-458-6461 |
Population & Service
| Population Served | 1,800 |
| Service Connections | 605 |
Drinking Water Violations (8)
This water system has 8 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 1, 2023 | Nov 30, 2023 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Nov 30, 2023 | Revised Total Coliform Rule |
| Jul 1, 2022 | Jul 31, 2022 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jul 31, 2022 | Revised Total Coliform Rule |
| Oct 1, 2021 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 8, 2022 | Lead and Copper Rule |
| Jul 1, 2016 | Jul 31, 2016 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Archived | Jul 31, 2016 | Revised Total Coliform Rule |
| Mar 1, 2000 | Mar 31, 2000 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2000 | Total Coliform Rule |
| Dec 1, 1997 | Dec 31, 1997 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 1997 | Total Coliform Rule |
| Jun 1, 1976 | May 31, 1980 | Gross Alpha, Excl. Radon and U | MR | No | No | — | 15 pCi/L | — | Archived | May 31, 1980 | Radionuclides and Revised Rad Rule |
| Jun 1, 1976 | May 31, 1980 | Combined Radium (-226 and -228) | MR | No | No | — | 5 pCi/L | — | Archived | May 31, 1980 | Radionuclides and Revised Rad 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.