KNIFE RIVER - NW TANGENT
PWS ID: OR4194328 · TANGENT, Oregon 97389
Population Served
60
Total Violations
77
Health-Based Violations
6
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Linn
- School/Daycare
- No
- MCL Violations
- 6
- Monitoring Violations
- 70
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 20 | 2009 |
| Coliform (TCR) | MCL | 6 | 1994 |
| Nitrate | MR | 5 | 2004 |
| COLIPHAGE | MR | 2 | 2012 |
| Diquat | MR | 2 | 2005 |
| Fluoride | MR | 1 | 2002 |
| Antimony, Total | MR | 1 | 2002 |
| Thallium, Total | MR | 1 | 2002 |
| Selenium | MR | 1 | 2002 |
| Endrin | MR | 1 | 2002 |
| BHC-GAMMA | MR | 1 | 2002 |
| Methoxychlor | MR | 1 | 2002 |
| Toxaphene | MR | 1 | 2002 |
| Dalapon | MR | 1 | 2002 |
| Endothall | MR | 1 | 2002 |
| Glyphosate | MR | 1 | 2002 |
| Di(2-ethylhexyl) adipate | MR | 1 | 2002 |
| OXAMYL | MR | 1 | 2002 |
| Simazine | MR | 1 | 2002 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2002 |
| Picloram | MR | 1 | 2002 |
| Hexachlorocyclopentadiene | MR | 1 | 2002 |
| Atrazine | MR | 1 | 2002 |
| 2,4,5-TP | MR | 1 | 2002 |
| HEXACHLOROBENZENE | MR | 1 | 2002 |
| Benzo(a)pyrene | MR | 1 | 2002 |
| Pentachlorophenol | MR | 1 | 2002 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 1 | 2002 |
| Chlordane | MR | 1 | 2002 |
| Arsenic | MR | 1 | 2002 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.