Brunswick Hills Mhp, WA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2025-2025). 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 Brunswick Hills Mhp
Brunswick Hills Mhp serves about 50 people through 28 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Medina County, Washington. EPA system ID: OH5200012; phone on file: 415-323-8742. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is down 4.3 ppb from 4.3 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Brunswick Hills Mhp is 15 ppb across 10 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2024 | 4.3 ppb |
| 2023 | 2 ppb |
| 2022 | 3 ppb |
| 2021 | 7.8 ppb |
| 2020 | 4.1 ppb |
| 2019 | 5.6 ppb |
| 2018 | 8 ppb |
| 2017 | 0 (not detected) |
| 2016 | 15 ppb over 10 |
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. Brunswick Hills Mhp's reported as 0 (not detected) sits at the 6th 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.
Next steps for Seattle, WA
Look up your address in Brunswick Hills Mhp'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 Brunswick Hills Mhp 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. Small systems behave differently: why small systems go over more often.