Lake Oswego - Tigard Water Supply, OR
No lead results on file with EPA
Latest 90th-percentile lead: no result on file. The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. EPA's database has no Lead and Copper Rule results for this system. Without them there is nothing to go on, so a tap test is the only way to know.
About Lake Oswego - Tigard Water Supply
Lake Oswego - Tigard Water Supply serves about 0 people through 2 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Clackamas County, Oregon. EPA system ID: OR4101542; phone on file: 971-415-4415. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Neighbouring systems
85 other systems share Clackamas County. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sunrise Water Authority | 50,003 | 3 ppb |
| Lake Oswego Municipal Water | 40,000 | 1.8 ppb |
| Oregon City | 33,940 | 1.84 ppb |
| Oak Lodge Water Services | 30,000 | 2.67 ppb |
| Clackamas River Water | 29,918 | 1.73 ppb |
| West Linn, City Of | 28,000 | 1.84 ppb |
| Wilsonville, City Of | 25,915 | 7.6 ppb |
| Milwaukie, City Of | 20,946 | 0 (not detected) |
| Clackamas River Water - Clairmont | 19,928 | 1.99 ppb |
| Canby Utility | 18,754 | 2.1 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; West Linn, OR may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Lake Oswego - Tigard Water Supply whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. Why sampled homes are the worst-case ones is in the guide to reading the number. The action level is dropping - the 10 ppb rule from 2027.