Dows Water Supply, IA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2021-2023). 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.
Dows Water Supply at a glance
Dows Water Supply serves about 526 people through 299 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 Wright County, Iowa. EPA system ID: IA9921050; phone on file: 515-852-4327. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is down 3 ppb from 3 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Dows Water Supply is 3 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2020 | 3 ppb |
| 2017 | 1 ppb |
Against other Iowa systems
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. Dows Water Supply's reported as 0 (not detected) sits at the 19th percentile in Iowa and the 23rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
6 other systems share Wright County; 4 of them have a higher latest lead result than Dows Water Supply. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Eagle Grove Water Supply | 3,601 | 0 (not detected) |
| Clarion Water Supply | 2,810 | 6 ppb |
| Belmond Water Supply | 2,463 | 0 (not detected) |
| Goldfield Water Supply | 634 | 2 ppb |
| Woolstock Water Supply | 144 | 2 ppb |
| Rowan Muni Water Supply | 124 | 1.4 ppb |
Next steps for Dows, IA
Look up your address in Dows 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 Dows 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Small systems behave differently: why small systems go over more often.