St Anthony, ID
Lead detected, under the action levels
Latest 90th-percentile lead: 2 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.
St Anthony at a glance
St Anthony serves about 3,606 people through 1,330 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Fremont County, Idaho. EPA system ID: ID7220067; phone on file: 208-624-3494. They can tell you what your service line is made of and whether they pay to replace it.
St Anthony's lead record
Against the period ending 2022 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for St Anthony is 2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2 ppb |
| 2022 | 1 ppb |
| 2019 | 2 ppb |
| 2016 | 2 ppb |
How St Anthony compares
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. St Anthony's 2 ppb sits at the 73rd percentile in Idaho and the 72nd nationally (higher means more lead).
Neighbouring systems
10 other systems share Fremont County; 4 of them have a higher latest lead result than St Anthony. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Ashton City Of | 1,129 | 0 (not detected) |
| Teton City Of | 735 | 1 ppb |
| Newdale City Of | 340 | 3 ppb |
| Parker City Of | 322 | 1 ppb |
| Shotgun North | 285 | 1 ppb |
| Idjc Juvenile Corrections Center | 280 | 0 (not detected) |
| Shotgun Cherokee Subd 5 | 245 | 13 ppb |
| Aspen Ridge Subd | 204 | 5 ppb |
| North Fork Water Works | 64 | 5 ppb |
| Mountain View Court | 40 | 0 (not detected) |
Next steps for St Anthony, ID
Test your own tap with a certified lab first-draw sample; St Anthony, 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 St Anthony 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.