Tigard, City Of, OR
Lead detected, under the action levels
Latest 90th-percentile lead: 0.98 ppb (monitoring period 2024-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About Tigard, City Of
Tigard, City Of serves about 62,500 people through 20,500 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Washington County, Oregon. EPA system ID: OR4100878; phone on file: 503-718-2690. They can tell you what your service line is made of and whether they pay to replace it.
Tigard, City Of's lead record
Against the period ending 2026 (0.98 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Tigard, City Of is 13 ppb across 7 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0.98 ppb |
| 2026 | 0.98 ppb |
| 2023 | 0.85 ppb |
| 2020 | 0 (not detected) |
| 2017 | 0 (not detected) |
| 2016 | 3.7 ppb |
| 2016 | 13 ppb over 10 |
How Tigard, City Of compares
Of the 909 Oregon systems with a lead result, the median latest reading is 1 ppb; 15 are over 15 ppb right now and 71 have gone over at some point. Tigard, City Of's 0.98 ppb sits at the 49th percentile in Oregon and the 50th nationally (higher means more lead).
Nearby utilities
28 other systems share Washington County; 17 of them have a higher latest lead result than Tigard, City Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Tualatin Valley Water District | 224,600 | 5.3 ppb |
| Hillsboro, City Of | 92,632 | 0 (not detected) |
| Beaverton, City Of | 88,045 | 2.6 ppb |
| Tualatin, City Of | 28,106 | 4.93 ppb |
| Forest Grove, City Of | 26,838 | 3.6 ppb |
| Sherwood, City Of | 20,781 | 1.3 ppb |
| Cornelius, City Of | 14,490 | 0 (not detected) |
| West Slope Water District | 11,000 | 5.01 ppb |
| Raleigh Water District | 4,500 | 5.01 ppb |
| North Plains Water Department | 3,663 | 0 (not detected) |
Next steps for Tigard, OR
Test your own tap with a certified lab first-draw sample; Tigard, 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 Tigard, City Of 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Systems that went over once often dip back under; here is what that means.