Logan Water Supply, IA
Lead detected, under the action levels
Latest 90th-percentile lead: 2 ppb (monitoring period 2024-2026). 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
Logan Water Supply serves about 1,397 people through 645 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 Harrison County, Iowa. EPA system ID: IA4337092; phone on file: 712-644-2425. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2023 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Logan Water Supply is 3 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2 ppb |
| 2023 | 2 ppb |
| 2020 | 2 ppb |
| 2017 | 3 ppb |
How Logan 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. Logan Water Supply's 2 ppb sits at the 65th percentile in Iowa and the 72nd nationally (higher means more lead).
Neighbouring systems
10 other systems share Harrison County; 8 of them have a higher latest lead result than Logan Water Supply. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Missouri Valley Water Supply | 2,678 | 2.9 ppb |
| Woodbine Water Department | 1,625 | 4 ppb |
| Dunlap Water Supply | 1,035 | 3 ppb |
| Mondamin Water Supply | 339 | 2.57 ppb |
| Modale Water Supply | 280 | 3 ppb |
| Pisgah Water Supply | 245 | 3.2 ppb |
| Sunnyside Village Mhp Llc | 190 | 0 (not detected) |
| Magnolia, City Of | 188 | 0 (not detected) |
| Little Sioux Water Department | 150 | 3 ppb |
| Valley View Water Association | 65 | 3.8 ppb |
Next steps for Logan, IA
Test your own tap with a certified lab first-draw sample; Logan, 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 Logan 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. Systems that went over once often dip back under; here is what that means.