Lawton Water Supply, IA
Lead detected, under the action levels
Latest 90th-percentile lead: 4.3 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.
Lawton Water Supply at a glance
Lawton Water Supply serves about 988 people through 366 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 Woodbury County, Iowa. EPA system ID: IA9743065; phone on file: 712-944-5960. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lawton Water Supply's lead record
That is up 1.35 ppb from 2.95 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Lawton Water Supply is 4.3 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4.3 ppb |
| 2022 | 2.95 ppb |
| 2019 | 2 ppb |
| 2016 | 2 ppb |
How Lawton 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. Lawton Water Supply's 4.3 ppb sits at the 86th percentile in Iowa and the 89th nationally (higher means more lead).
Other water systems in Woodbury County
16 other systems share Woodbury County; 0 of them have a higher latest lead result than Lawton Water Supply. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sioux City Water Supply | 85,791 | 2 ppb |
| Sergeant Bluff Water Supply | 5,015 | 4 ppb |
| Moville Water Supply | 1,687 | 0.82 ppb |
| Sloan Water Supply | 1,042 | 0.93 ppb |
| Correctionville Water Supply | 766 | 0.8 ppb |
| Anthon Municipal Water System | 545 | 1.8 ppb |
| Pierson Water Supply | 345 | 0.8 ppb |
| Danbury Water Supply | 320 | 1.2 ppb |
| Salix Water Supply | 295 | 0.6 ppb |
| Bronson Water Supply | 294 | 1.9 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Lawton, 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 Lawton 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.