Bayshore Water System, WA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About Bayshore Water System
Bayshore Water System serves about 56 people through 36 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Island County, Washington. EPA system ID: WA5304930. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
That is down 1.1 ppb from 1.1 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Bayshore Water System is 7.1 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 1.1 ppb |
| 2019 | 1 ppb |
| 2016 | 7.1 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. Bayshore Water System's reported as 0 (not detected) sits at the 7th percentile in Washington and the 4th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
232 other systems share Island County; 171 of them have a higher latest lead result than Bayshore Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Oak Harbor City Of | 23,675 | 1.2 ppb |
| Naval Air Station/Whidbey Island | 16,595 | 3.4 ppb |
| Coupeville Town Of | 4,142 | 3.5 ppb |
| Camano Water Association | 2,592 | 1 ppb |
| Clinton Water District | 1,980 | 9.8 ppb |
| Langley City Of | 1,416 | 1.9 ppb |
| Harbor Hills Community Water System | 1,373 | 3 ppb |
| Freeland Water And Sewer District | 1,264 | 0 (not detected) |
| W&B Waterworks 1 | 1,112 | 1.3 ppb |
| Camano Co-Op Water & Power Co | 1,071 | 9.5 ppb |
Next steps for Mt Vernon, WA
Look up your address in Bayshore Water System's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Bayshore Water System 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. Small systems behave differently: why small systems go over more often.