Rapid River Water & Sewer Dist, ID
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2023-2025). 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
Rapid River Water & Sewer Dist serves about 120 people through 66 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Idaho County, Idaho. EPA system ID: ID2250050; phone on file: 208-628-2394. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is down 14 ppb from 15 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Rapid River Water & Sewer Dist is 15 ppb across 4 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1 ppb |
| 2022 | 15 ppb over 10 |
| 2019 | 8 ppb |
| 2016 | 3 ppb |
Against other Idaho systems
Of the 763 Idaho systems with a lead result, the median latest reading is 1 ppb; 3 are over 15 ppb right now and 46 have gone over at some point. Rapid River Water & Sewer Dist's 1 ppb sits at the 45th percentile in Idaho and the 51st nationally (higher means more lead).
Other water systems in Idaho County
17 other systems share Idaho County; 8 of them have a higher latest lead result than Rapid River Water & Sewer Dist. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Grangeville Water Dept | 3,151 | 2 ppb |
| Cottonwood Water Dept | 977 | 1 ppb |
| Kooskia Water Dept | 514 | 0 (not detected) |
| Riggins City Of | 434 | 2 ppb |
| Idoc North Idaho Correctional Institute | 425 | 2 ppb |
| Pine Ridge Water And Sewer Dist | 390 | 2 ppb |
| Elk City Water And Sewer Assn | 320 | 9 ppb |
| Stites City Of | 253 | 1 ppb |
| Kamiah Valley Company Llc | 250 | 0 (not detected) |
| Monastery Of St Gertrudes | 200 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Riggins, ID 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 Rapid River Water & Sewer Dist 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. The lead result guide covers how utilities pick the homes they sample. The action level is dropping - the 10 ppb rule from 2027.