Anderson Circle Water Corp, 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.
Anderson Circle Water Corp at a glance
Anderson Circle Water Corp serves about 40 people through 20 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Ada County, Idaho. EPA system ID: ID4010005; phone on file: 208-830-4870. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Anderson Circle Water Corp's lead record
That is up 2 ppb from 0 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Anderson Circle Water Corp is 5 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2 ppb |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 5 ppb |
How Anderson Circle Water Corp 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. Anderson Circle Water Corp's 2 ppb sits at the 59th percentile in Idaho and the 69th nationally (higher means more lead).
Other water systems in Ada County
52 other systems share Ada County; 12 of them have a higher latest lead result than Anderson Circle Water Corp. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Veolia Water Idaho | 264,978 | 2 ppb |
| Meridian Water Dept | 152,070 | 3.9 ppb |
| Kuna City Of | 32,038 | 0 (not detected) |
| Star Sewer And Water Dist Water System | 14,000 | 1 ppb |
| Garden City Water And Sewer System | 12,500 | 1 ppb |
| Capitol Water Corp | 9,000 | 3 ppb |
| Eagle, City Of (Western Zone) | 6,108 | 1 ppb |
| Eagle, City Of (Eastern Zone) | 3,702 | 4 ppb |
| Idoc Sbx Complex | 3,309 | 0 (not detected) |
| Idoc Idaho State Correctional Center | 2,204 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Boise, 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 Anderson Circle Water Corp 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.