Stanhope Water Department, IA
Above the new 10 ppb level coming in 2027
Latest 90th-percentile lead: 12 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. Under the current 15 ppb rule this is not an exceedance, but it is above the 10 ppb action level that takes over in Nov 2027. Test your own tap; filter if your result shows lead.
About Stanhope Water Department
Stanhope Water Department serves about 364 people through 218 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: IA4045090; phone on file: 515-826-3290. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is up 12 ppb from 0 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Stanhope Water Department is 12 ppb across 4 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 12 ppb over 10 |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 3 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. Stanhope Water Department's 12 ppb sits at the 98th percentile in Iowa and the 98th nationally (higher means more lead).
Nearby utilities
7 other systems share Hamilton County; 0 of them have a higher latest lead result than Stanhope Water Department. 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 |
| 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; Stanhope, 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 Stanhope Water Department 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. See what changes at 10 ppb in 2027.