Corbett Creek, WA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
Corbett Creek at a glance
Corbett Creek serves about 95 people through 45 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Stevens County, Washington. EPA system ID: WA5329790. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
That is down 8.1 ppb from 8.1 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Corbett Creek is 8.1 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2020 | 8.1 ppb |
| 2017 | 1.5 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. Corbett Creek's reported as 0 (not detected) sits at the 14th percentile in Washington and the 9th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
32 other systems share Stevens County; 16 of them have a higher latest lead result than Corbett Creek. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Stevens Co Pud - Suncrest | 7,484 | 1.4 ppb |
| Colville Water Department | 4,945 | 1.1 ppb |
| Stevens Co Pud - Deer Lake | 2,884 | 0 (not detected) |
| Kettle Falls Water Dept | 2,698 | 0 (not detected) |
| Chewelah Water Dept South | 2,615 | 3.1 ppb |
| Stevens Co Pud - Loon Lake | 2,487 | 0 (not detected) |
| Stevens Co Pud - Waitts Lake | 1,216 | 0 (not detected) |
| Stevens Co Pud - Clayton | 725 | 0 (not detected) |
| Stevens Co Pud - Valley | 550 | 0 (not detected) |
| Chewelah Water Dept North | 350 | 1.4 ppb |
Your move
Look up your address in Corbett Creek'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 Corbett Creek 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. A zero today does not rule out a jump later - the rules are tightening in 2027.