Lake Grove Water Association, WA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.2 ppb (monitoring period 2020-2022). 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 Lake Grove Water Association
Lake Grove Water Association serves about 134 people through 54 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: WA5343940. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
Against the period ending 2019 (1.9 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Lake Grove Water Association is 15 ppb across 3 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2022 | 1.2 ppb |
| 2019 | 1.9 ppb |
| 2016 | 15 ppb over 10 |
Against other Washington systems
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. Lake Grove Water Association's 1.2 ppb sits at the 54th percentile in Washington and the 58th nationally (higher means more lead).
Nearby utilities
232 other systems share Island County; 105 of them have a higher latest lead result than Lake Grove Water Association. 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 |
Your move
Test your own tap with a certified lab first-draw sample; Coupeville, 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 Lake Grove Water Association 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. The action level is dropping - the 10 ppb rule from 2027.