Anamosa Municipal Water Supply, IA
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2022-2024). 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
Anamosa Municipal Water Supply serves about 4,457 people through 1,950 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 Jones County, Iowa. EPA system ID: IA5307048; phone on file: 319-558-8335. 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 down 2.3 ppb from 3.3 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Anamosa Municipal Water Supply is 5.6 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1 ppb |
| 2021 | 3.3 ppb |
| 2018 | 5.6 ppb |
How Anamosa Municipal 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. Anamosa Municipal Water Supply's 1 ppb sits at the 44th percentile in Iowa and the 55th nationally (higher means more lead).
Nearby utilities
10 other systems share Jones County; 4 of them have a higher latest lead result than Anamosa Municipal Water Supply. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Monticello Water Supply | 4,040 | 3 ppb |
| Anamosa State Penitentiary | 1,230 | 0 (not detected) |
| Olin Water Supply | 651 | 3.1 ppb |
| Wyoming Water System | 523 | 2.4 ppb |
| Oxford Junction Water Supply | 424 | 0.9 ppb |
| Martelle Water Works | 249 | 0 (not detected) |
| Onslow Water Supply | 201 | 0.6 ppb |
| Center Junction (Eiruss) | 100 | 0 (not detected) |
| Morley Municipal Water Supply | 98 | 0 (not detected) |
| Bacon Addition | 81 | 2 ppb |
Next steps for Anamosa, IA
Test your own tap with a certified lab first-draw sample; Anamosa, 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 Anamosa Municipal 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. Size matters more than most people expect: small vs large water systems.