Hidden Heights, WA
Lead detected, under the action levels
Latest 90th-percentile lead: 4.8 ppb (monitoring period 2021-2023). 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
Hidden Heights serves about 35 people through 16 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Kitsap County, Washington. EPA system ID: WA5300944. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
That is up 1.4 ppb from 3.4 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Hidden Heights is 4.8 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 4.8 ppb |
| 2020 | 3.4 ppb |
| 2017 | 3 ppb |
How Hidden Heights compares
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. Hidden Heights's 4.8 ppb sits at the 91st percentile in Washington and the 90th nationally (higher means more lead).
Neighbouring systems
149 other systems share Kitsap County; 12 of them have a higher latest lead result than Hidden Heights. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Bremerton City Of | 72,951 | 5 ppb |
| Silverdale Water Dist 16 | 35,163 | 2 ppb |
| West Sound Utility District #1 | 28,930 | 1 ppb |
| North Perry Ave Water District | 24,402 | 1 ppb |
| Poulsbo City Of | 18,400 | 1 ppb |
| Naval Base Kitsap At Bangor | 16,828 | 3 ppb |
| North Peninsula | 16,449 | 2 ppb |
| Port Orchard Water Dept | 15,355 | 0 (not detected) |
| Bainbridge Island City Of | 13,491 | 3 ppb |
| Naval Base Kitsap At Bremerton | 11,792 | 2 ppb |
Next steps for Port Orchard, WA
Test your own tap with a certified lab first-draw sample; Port Orchard, 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 Hidden Heights 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.