Sully Muni Water Works, IA
Lead detected, under the action levels
Latest 90th-percentile lead: 2.4 ppb (monitoring period 2021-2023). 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.
About Sully Muni Water Works
Sully Muni Water Works serves about 900 people through 441 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 Jasper County, Iowa. EPA system ID: IA5076005; phone on file: 641-521-3083. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 2.4 ppb from 0 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Sully Muni Water Works is 2.4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 2.4 ppb |
| 2020 | 0 (not detected) |
| 2017 | 1.8 ppb |
How Sully Muni Water Works 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. Sully Muni Water Works's 2.4 ppb sits at the 71st percentile in Iowa and the 77th nationally (higher means more lead).
Neighbouring systems
9 other systems share Jasper County; 1 of them has a higher latest lead result than Sully Muni Water Works. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Newton Water Supply | 16,518 | 0 (not detected) |
| Colfax Water Supply | 2,305 | 5.1 ppb |
| Monroe Water Supply | 2,007 | 1.2 ppb |
| Prairie City Water Works | 1,703 | 0.81 ppb |
| Baxter Water Supply | 1,002 | 0 (not detected) |
| Kellogg Water Supply | 617 | 1.8 ppb |
| Lynnville Water Dept | 380 | 0 (not detected) |
| Sunrise Terrace Mhc | 330 | 0 (not detected) |
| Mingo Water Department | 316 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Sully, 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 Sully Muni Water Works 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. The action level is dropping - the 10 ppb rule from 2027.