Roland Water Supply, IA
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Who runs the water here
Roland Water Supply serves about 1,394 people through 550 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 Story County, Iowa. EPA system ID: IA8570001; phone on file: 515-291-7013. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Roland Water Supply's lead record
That is down 2 ppb from 2 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Roland Water Supply is 30 ppb across 4 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2020 | 2 ppb |
| 2017 | 30 ppb over 15 |
| 2016 | 2 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. Roland Water Supply's reported as 0 (not detected) sits at the 25th percentile in Iowa and the 29th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
18 other systems share Story County; 11 of them have a higher latest lead result than Roland Water Supply. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Ames Water Treatment Plant | 55,177 | 0 (not detected) |
| Isu | 42,000 | 1.2 ppb |
| Nevada Water Supply | 6,925 | 0 (not detected) |
| Huxley Waterworks Dept | 4,244 | 1.1 ppb |
| Story City Water Dept | 3,357 | 0 (not detected) |
| Slater Muni Water Dept | 1,548 | 7 ppb |
| Gilbert Water Supply | 1,211 | 0 (not detected) |
| Maxwell Water Department | 859 | 4 ppb |
| Colo Water Supply | 853 | 1.1 ppb |
| Cambridge Water Supply | 832 | 2 ppb |
Next steps for Roland, IA
Test your own tap with a certified lab first-draw sample; Roland, 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 Roland 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Why an old exceedance still matters: over the limit before, under it now.