Pomeroy Water Supply, IA
Lead detected, under the action levels
Latest 90th-percentile lead: 2.1 ppb (monitoring period 2024-2024). 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.
About Pomeroy Water Supply
Pomeroy Water Supply serves about 671 people through 295 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 Calhoun County, Iowa. EPA system ID: IA1363051; phone on file: 712-468-2411. They can tell you what your service line is made of and whether they pay to replace it.
Pomeroy Water Supply's lead record
That is down 6 ppb from 8.1 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Pomeroy Water Supply is 8.1 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 2.1 ppb |
| 2023 | 8.1 ppb |
| 2022 | 3.4 ppb |
| 2021 | 8.1 ppb |
| 2018 | 3 ppb |
Where this result ranks
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. Pomeroy Water Supply's 2.1 ppb sits at the 68th percentile in Iowa and the 74th nationally (higher means more lead).
Nearby utilities
11 other systems share Calhoun County; 6 of them have a higher latest lead result than Pomeroy Water Supply. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Rockwell City Water Supply | 2,250 | 2 ppb |
| Lake City Water Supply | 1,731 | 4 ppb |
| Manson Water Supply | 1,727 | 6 ppb |
| Lohrville Water Supply | 381 | 1.1 ppb |
| Farnhamville Water Supply | 379 | 3 ppb |
| Twin Lakes Utilities | 300 | 0 (not detected) |
| Lytton Water Department | 282 | 3 ppb |
| Somers Water Works | 128 | 11 ppb |
| Knierim Water Supply | 53 | 2 ppb |
| Rinard Water Supply | 38 | 4 ppb |
Next steps for Pomeroy, IA
Test your own tap with a certified lab first-draw sample; Pomeroy, 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 Pomeroy 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.