Is West Linn, OR tap water safe?
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data for City of West Linn.
City of West Linn supplies West Linn (28,000 people).
Water system
City of West Linn
28,000 people · Purchased surface water · EPA ID OR4100944
Buys treated water from South Fork Water Board.
| PFAS | Highest average | Limit |
|---|---|---|
| PFOA Not detected | – | 4 ppt |
| PFOS Not detected | – | 4 ppt |
| PFHxS Not detected | – | 10 ppt |
| PFNA Not detected | – | 10 ppt |
| HFPO-DA (GenX) Not detected | – | 10 ppt |
ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.
Lead: 1.84 ppb at the 90th percentile (Dec 2024, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0
Across Oregon, 9 of 123 water systems EPA tested had PFAS above a 2024 federal limit, and 16 systems were above the lead action level in results from the last five years. Oregon results.
West Linn homes and lead pipes
Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. How to check your own line.
Housing: Census American Community Survey 2020–2024 5-year estimates for West Linn city (tables B25034, B25003). Estimates for small places have a margin of error.
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Oregon City 3 mi Oregon City Water System | None above limits | 1.84 ppb |
| Lake Oswego 4 mi Portland Water Bureau | None above limits | 5.01 ppb |
| Tualatin 7 mi City of Tualatin | None above limits | 4.93 ppb |
| Wilsonville 7 mi City of Wilsonville | None above limits | 7.6 ppb |
| Happy Valley 8 mi Portland Water Bureau | None above limits | 5.01 ppb |
| Tigard 8 mi Portland Water Bureau | None above limits | 5.01 ppb |
West Linn ZIP codes (1)
- 97068
Questions
Is West Linn tap water safe to drink?
City of West Linn has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.
Who supplies water in West Linn, OR?
City of West Linn, which serves 28,000 people.
Does West Linn tap water have PFAS?
None detected above EPA's reporting limits. City of West Linn had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.
Do West Linn homes have lead pipes?
Census estimates put 32% of West Linn homes as built before 1980 (Oregon: 49%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. City of West Linn's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.