Jefferson County Water Dist #1, WA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.5 ppb (monitoring period 2023-2025). 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.
Who runs the water here
Jefferson County Water Dist #1 serves about 600 people through 207 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Jefferson County, Washington. EPA system ID: WA5336705. Ask the utility on your bill for your address in their service line inventory.
Jefferson County Water Dist #1's lead record
That is down 4.9 ppb from 6.4 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Jefferson County Water Dist #1 is 6.4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.5 ppb |
| 2021 | 6.4 ppb |
| 2018 | 2 ppb |
Where this result ranks
Of the 2,218 Washington systems with a lead result, the median latest reading is 1 ppb; 18 are over 15 ppb right now and 62 have gone over at some point. Jefferson County Water Dist #1's 1.5 ppb sits at the 60th percentile in Washington and the 63rd nationally (higher means more lead).
Neighbouring systems
23 other systems share Jefferson County; 12 of them have a higher latest lead result than Jefferson County Water Dist #1. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Port Townsend City Of | 17,053 | 3 ppb |
| Quimper | 14,548 | 2 ppb |
| Olympic Water & Sewer Inc | 3,086 | 5.9 ppb |
| Cape George Colony Club Inc | 1,022 | 0 (not detected) |
| Bywater Bay | 628 | 2 ppb |
| Bridgehaven Community Club | 623 | 17 ppb |
| Olympic Corrections Center | 390 | 0.5 ppb |
| Gardiner Lud 1 | 379 | 0 (not detected) |
| Lazy C | 367 | 3 ppb |
| Coyle | 329 | 0 (not detected) |
Next steps for Port Ludlow, WA
Test your own tap with a certified lab first-draw sample; Port Ludlow, WA 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 Jefferson County Water Dist #1 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. The lead result guide covers how utilities pick the homes they sample. The action level is dropping - the 10 ppb rule from 2027.