Granger Muni Water Supply, IA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About Granger Muni Water Supply
Granger Muni Water Supply serves about 1,654 people through 629 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 Dallas County, Iowa. EPA system ID: IA2537001; phone on file: 515-971-4629. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Granger Muni Water Supply's lead record
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Granger Muni Water Supply is 7.1 ppb across 10 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 1.1 ppb |
| 2021 | 1.8 ppb |
| 2021 | 2.9 ppb |
| 2020 | 1.9 ppb |
| 2020 | 2.2 ppb |
| 2019 | 2.4 ppb |
| 2019 | 5.7 ppb |
| 2018 | 7.1 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. Granger Muni Water Supply's reported as 0 (not detected) sits at the 26th percentile in Iowa and the 30th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
18 other systems share Dallas County; 7 of them have a higher latest lead result than Granger Muni Water Supply. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Waukee Water Supply | 31,823 | 0 (not detected) |
| Xenia Rwd (Des Moines) | 12,860 | 1.74 ppb |
| Perry Municipal Water Works | 7,836 | 1 ppb |
| Adel Municipal Water Works | 6,461 | 0 (not detected) |
| Xenia Rwd (Woodward) | 3,465 | 0.7 ppb |
| Dallas Center Water Supply | 1,901 | 0 (not detected) |
| Woodward Water Supply | 1,346 | 4 ppb |
| Van Meter Municipal Water Work | 1,074 | 0 (not detected) |
| De Soto Water Supply | 960 | 0.5 ppb |
| Midwest Country Estates | 820 | 0 (not detected) |
Next steps for Granger, IA
Look up your address in Granger Muni Water Supply's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Granger Muni Water Supply whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1400 ppb (copper action level 1,300 ppb).
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. A zero today does not rule out a jump later - the rules are tightening in 2027.