Monterra, WA
Lead detected, under the action levels
Latest 90th-percentile lead: 1.5 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.
Monterra at a glance
Monterra serves about 464 people through 192 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Clallam County, Washington. EPA system ID: WA5355990. Ask the utility on your bill for your address in their service line inventory.
Monterra's lead record
Against the period ending 2020 (2.5 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Monterra is 5 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1.5 ppb |
| 2020 | 2.5 ppb |
| 2017 | 5 ppb |
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. Monterra's 1.5 ppb sits at the 60th percentile in Washington and the 63rd nationally (higher means more lead).
Nearby utilities
61 other systems share Clallam County; 22 of them have a higher latest lead result than Monterra. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Port Angeles City Of | 28,067 | 2 ppb |
| Sequim City Of | 14,293 | 2.1 ppb |
| Port Angeles Composite | 8,872 | 1.6 ppb |
| Forks Municipal Water Dept | 3,468 | 2 ppb |
| Dry Creek Water Association | 3,030 | 5 ppb |
| West Sequim Bay Inc | 2,759 | 1 ppb |
| Crescent Water Assn | 2,360 | 0 (not detected) |
| Sunland Water District | 2,235 | 5 ppb |
| Clallam Bay Sekiu | 1,719 | 1.8 ppb |
| Evergreen Clallam County Pud 1 | 1,694 | 2.3 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Sequim, 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 Monterra 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. Size matters more than most people expect: small vs large water systems.