Winfield Muni Water Dept, IA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2022-2024). 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
Winfield Muni Water Dept serves about 1,035 people through 469 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Henry County, Iowa. EPA system ID: IA4493028; phone on file: 319-850-1180. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2021 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Winfield Muni Water Dept is 1.4 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2021 | 1 ppb |
| 2021 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2018 | 1.4 ppb |
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. Winfield Muni Water Dept's reported as 0 (not detected) sits at the 24th percentile in Iowa and the 27th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
10 other systems share Henry County; 4 of them have a higher latest lead result than Winfield Muni Water Dept. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mount Pleasant Municipal Utilities | 9,274 | 0 (not detected) |
| New London Munic Water Dept | 1,910 | 1.1 ppb |
| Rathbun Regional Water (Mount Pleasant) | 1,465 | 2 ppb |
| Wayland Water Supply | 966 | 1 ppb |
| Salem Water Supply | 396 | 0 (not detected) |
| Olds Municipal Water Dept | 192 | 2 ppb |
| Hillsboro Water Works | 163 | 0 (not detected) |
| Rome Water Supply | 114 | 0 (not detected) |
| Westwood Water Supply | 101 | 0 (not detected) |
| Nancys Mhp | 77 | - |
Next steps for Winfield, IA
Look up your address in Winfield Muni Water Dept'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 Winfield Muni Water Dept 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. A zero today does not rule out a jump later - the rules are tightening in 2027.