Evanston, City Of, WY
Lead detected, under the action levels
Latest 90th-percentile lead: 0.73 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.
Evanston, City Of at a glance
Evanston, City Of serves about 11,727 people through 4,164 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Uinta County, Wyoming. EPA system ID: WY5600150; phone on file: 307-789-2906. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2022 (0.9 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Evanston, City Of is 2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.73 ppb |
| 2022 | 0.9 ppb |
| 2019 | 2 ppb |
| 2016 | 2 ppb |
Against other Wyoming systems
Of the 311 Wyoming systems with a lead result, the median latest reading is 1 ppb; 0 are over 15 ppb right now and 16 have gone over at some point. Evanston, City Of's 0.73 ppb sits at the 32nd percentile in Wyoming and the 47th nationally (higher means more lead).
Neighbouring systems
5 other systems share Uinta County; 4 of them have a higher latest lead result than Evanston, City Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Lyman, Town Of | 2,203 | 0.9 ppb |
| Bridger Valley Joint Powers Board | 1,728 | 1.3 ppb |
| Mountain View, Town Of | 1,250 | 3 ppb |
| Bear River Regional Joint Powers | 1,200 | 0 (not detected) |
| Lindley Park, Llc | 362 | 1 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Evanston, WY 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 Evanston, City Of 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.