Grand Jct Municipal Water Dept, IA
Lead detected, under the action levels
Latest 90th-percentile lead: 1 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
Grand Jct Municipal Water Dept serves about 725 people through 347 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 Greene County, Iowa. EPA system ID: IA3730098; phone on file: 515-738-2285. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 2 ppb from 3 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Grand Jct Municipal Water Dept is 3 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1 ppb |
| 2023 | 3 ppb |
| 2020 | 0 (not detected) |
| 2017 | 0 (not detected) |
Against other Iowa systems
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. Grand Jct Municipal Water Dept's 1 ppb sits at the 42nd percentile in Iowa and the 53rd nationally (higher means more lead).
Nearby utilities
3 other systems share Greene County; 2 of them have a higher latest lead result than Grand Jct Municipal Water Dept. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Jefferson Water Department | 4,182 | 0.8 ppb |
| Scranton Water System | 511 | 17 ppb |
| Churdan Water Supply | 375 | 1.2 ppb |
Next steps for Grand Junction, IA
Test your own tap with a certified lab first-draw sample; Grand Junction, 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 Grand Jct Municipal Water Dept 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.