Steamboat Association, IA
Exceeded the action level in the past
Latest 90th-percentile lead: 0.6 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.
About Steamboat Association
Steamboat Association serves about 29 people through 10 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Muscatine County, Iowa. EPA system ID: IA7048303; phone on file: 563-260-8748. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Steamboat Association's lead record
That is down 1.4 ppb from 2 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Steamboat Association is 17 ppb across 5 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.6 ppb |
| 2025 | 2 ppb |
| 2024 | 17 ppb over 15 |
| 2021 | 4.6 ppb |
| 2018 | 5 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. Steamboat Association's 0.6 ppb sits at the 34th percentile in Iowa and the 44th nationally (higher means more lead).
Nearby utilities
19 other systems share Muscatine County; 8 of them have a higher latest lead result than Steamboat Association. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Muscatine Power & Water | 25,516 | 3 ppb |
| West Liberty Water Utility | 3,938 | 0 (not detected) |
| Wilton Water Supply | 2,924 | 6 ppb |
| Ripleys Mhc Ia Llc | 520 | 2.8 ppb |
| Mark Twain Meadows Homeowners | 375 | 0 (not detected) |
| Atalissa Municipal Water Supply | 296 | 1 ppb |
| Park Plaza Mhp Llc | 188 | 0 (not detected) |
| Stockton Muni Water Supply | 176 | 0 (not detected) |
| Louisa Courts Mhp & Sales | 121 | 0 (not detected) |
| Rolling Acres Subdivision | 115 | 6 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Muscatine, 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 Steamboat Association 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. Why an old exceedance still matters: over the limit before, under it now.