Jewell Water Supply, IA
Exceeded the action level in the past
Latest 90th-percentile lead: 10 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. 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.
About Jewell Water Supply
Jewell Water Supply serves about 1,216 people through 536 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 Hamilton County, Iowa. EPA system ID: IA4027010; phone on file: 515-836-8144. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is up 7 ppb from 3 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Jewell Water Supply is 39 ppb across 7 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 10 ppb |
| 2022 | 3 ppb |
| 2019 | 2 ppb |
| 2018 | 3 ppb |
| 2017 | 5 ppb |
| 2017 | 11 ppb over 10 |
| 2016 | 39 ppb over 15 |
How Jewell Water Supply compares
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. Jewell Water Supply's 10 ppb sits at the 98th percentile in Iowa and the 97th nationally (higher means more lead).
Neighbouring systems
7 other systems share Hamilton County; 1 of them has a higher latest lead result than Jewell 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) |
| 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 |
| Blairsburg Water Supply | 177 | 0 (not detected) |
| Randall Water Supply | 154 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Jewell, 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 Jewell 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. More in what a past exceedance means today.