Coal Valley Water District, IA
Lead detected, under the action levels
Latest 90th-percentile lead: 8 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 Coal Valley Water District
Coal Valley Water District serves about 240 people through 96 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Boone County, Iowa. EPA system ID: IA0819303; phone on file: 515-275-2437. They can tell you what your service line is made of and whether they pay to replace it.
Coal Valley Water District's lead record
That is up 2 ppb from 6 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Coal Valley Water District is 8 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 8 ppb |
| 2020 | 6 ppb |
| 2017 | 3 ppb |
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. Coal Valley Water District's 8 ppb sits at the 95th percentile in Iowa and the 96th nationally (higher means more lead).
Other water systems in Boone County
10 other systems share Boone County; 0 of them have a higher latest lead result than Coal Valley Water District. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Boone Water Works | 12,704 | 3 ppb |
| Xenia Rwd (Boone) | 4,975 | 0.6 ppb |
| Madrid Water Department | 3,090 | 0 (not detected) |
| Ogden Municipal Utilities | 2,419 | 3 ppb |
| Xenia Rwd (Madrid) | 1,635 | 0.5 ppb |
| Woodward Resource Center | 700 | 0 (not detected) |
| Logansport Water System | 190 | 0 (not detected) |
| Pilot Mound Water System | 176 | 5 ppb |
| Benefit Water District #2 | 100 | 2 ppb |
| Sunrise Mhc | 95 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Ogden, 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 Coal Valley Water District 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. Systems that went over once often dip back under; here is what that means.