Woodlyn Hills, IA
Exceeded the action level in the past
Latest 90th-percentile lead: 1 ppb (monitoring period 2025-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Who runs the water here
Woodlyn Hills serves about 80 people through 30 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Kossuth County, Iowa. EPA system ID: IA5502319; phone on file: 515-320-1122. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2024 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Woodlyn Hills is 49.5 ppb across 12 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1 ppb |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2017 | 49.5 ppb over 15 |
| 2016 | 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. Woodlyn Hills's 1 ppb sits at the 40th percentile in Iowa and the 51st nationally (higher means more lead).
Neighbouring systems
14 other systems share Kossuth County; 10 of them have a higher latest lead result than Woodlyn Hills. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Algona Municipal Utilities | 5,487 | 5 ppb |
| Bancroft Water Supply | 711 | 0 (not detected) |
| Swea City Water Supply | 584 | 1 ppb |
| Whittemore Muni Water Supply | 522 | 9.5 ppb |
| Titonka Water Supply | 511 | 6 ppb |
| Burt Water Supply | 418 | 14 ppb |
| Wesley Water Supply | 390 | 4 ppb |
| Lakota Water Supply | 267 | 5 ppb |
| Lu Verne Water Supply | 258 | 4 ppb |
| Fenton Municipal Water Supply | 254 | 14 ppb |
Next steps for Whittemore, IA
Test your own tap with a certified lab first-draw sample; Whittemore, IA 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 Woodlyn Hills 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. What a 90th-percentile result does and does not tell you: how to read a lead result. More in what a past exceedance means today.