Iowa Falls Water Department, IA
Lead detected, under the action levels
Latest 90th-percentile lead: 9 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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Who runs the water here
Iowa Falls Water Department serves about 5,146 people through 2,211 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Hardin County, Iowa. EPA system ID: IA4260097; phone on file: 641-648-3714. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is down 2 ppb from 11 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Iowa Falls Water Department is 11 ppb across 4 monitoring periods, none of them over 15 ppb (3 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 9 ppb |
| 2022 | 11 ppb over 10 |
| 2019 | 11 ppb over 10 |
| 2016 | 11 ppb over 10 |
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. Iowa Falls Water Department's 9 ppb sits at the 96th percentile in Iowa and the 97th nationally (higher means more lead).
Other water systems in Hardin County
10 other systems share Hardin County; 0 of them have a higher latest lead result than Iowa Falls Water Department. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Eldora Water Supply | 2,664 | 3 ppb |
| Ackley Municipal Water Works | 1,599 | 3.2 ppb |
| Hubbard Water Supply | 860 | 0 (not detected) |
| Alden Water Supply | 764 | 2 ppb |
| Radcliffe Municipal Water | 561 | 1 ppb |
| Union Water Supply | 399 | 2.8 ppb |
| Steamboat Rock Water Dept | 264 | 2.4 ppb |
| New Providence Water Supply | 236 | 0 (not detected) |
| Pinecrest Mhp | 113 | - |
| Chase Mobile Home Park | 85 | 0 (not detected) |
Next steps for Iowa Falls, IA
Test your own tap with a certified lab first-draw sample; Iowa Falls, 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 Iowa Falls 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Size matters more than most people expect: small vs large water systems.