Blairsburg Water Supply, IA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Blairsburg Water Supply serves about 177 people through 99 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 Hamilton County, Iowa. EPA system ID: IA4003012; phone on file: 515-689-4520. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is down 2 ppb from 2 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Blairsburg Water Supply is 2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 2 ppb |
| 2021 | 2 ppb |
| 2018 | 0 (not detected) |
Where this result ranks
Of the 1,066 Iowa systems with a lead result, the median latest reading is 1.4 ppb; 4 are over 15 ppb right now and 36 have gone over at some point. Blairsburg Water Supply's reported as 0 (not detected) sits at the 10th percentile in Iowa and the 14th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
7 other systems share Hamilton County; 4 of them have a higher latest lead result than Blairsburg Water Supply. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Webster City Water Supply | 7,825 | 0 (not detected) |
| Jewell Water Supply | 1,216 | 10 ppb |
| Stratford Muni Water Dept | 707 | 0 (not detected) |
| Ellsworth Public Water Supply | 514 | 1 ppb |
| Stanhope Water Department | 364 | 12 ppb |
| Williams Water Supply | 315 | 2 ppb |
| Randall Water Supply | 154 | 0 (not detected) |
What to do in your house
Look up your address in Blairsburg Water Supply's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Blairsburg Water Supply 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. Small systems behave differently: why small systems go over more often.