Lamont Water System, WA
Lead detected, under the action levels
Latest 90th-percentile lead: 2.7 ppb (monitoring period 2024-2024). 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
Lamont Water System serves about 136 people through 47 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 Whitman County, Washington. EPA system ID: WA5345650. Ask the utility on your bill for your address in their service line inventory.
Lamont Water System's lead record
Against the period ending 2023 (2.5 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Lamont Water System is 3 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 2.7 ppb |
| 2023 | 2.5 ppb |
| 2020 | 3 ppb |
| 2017 | 2 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. Lamont Water System's 2.7 ppb sits at the 78th percentile in Washington and the 79th nationally (higher means more lead).
Neighbouring systems
18 other systems share Whitman County; 6 of them have a higher latest lead result than Lamont Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Pullman Water Department City Of | 31,315 | 2.1 ppb |
| Washington State University | 21,506 | 4.9 ppb |
| Colfax Water Department City Of | 3,507 | 3.8 ppb |
| Palouse Water Dept City Of | 1,298 | 3.2 ppb |
| Tekoa City Of | 1,076 | 1.4 ppb |
| Rosalia Town Of | 831 | 3.8 ppb |
| St John Town Of | 800 | 2.2 ppb |
| Garfield Water Department | 694 | 0 (not detected) |
| Colton Water Department | 632 | 4.1 ppb |
| Albion Water Dept | 600 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Lamont, 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 Lamont Water System 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.