Wilshire Hills Mhc, IA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). 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 Wilshire Hills Mhc
Wilshire Hills Mhc serves about 216 people through 72 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Warren County, Iowa. EPA system ID: IA9164601; phone on file: 515-864-1003. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Wilshire Hills Mhc is 8 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 8 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. Wilshire Hills Mhc's reported as 0 (not detected) sits at the 12th percentile in Iowa and the 16th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Warren County
12 other systems share Warren County; 5 of them have a higher latest lead result than Wilshire Hills Mhc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Indianola Water Supply | 15,833 | 0 (not detected) |
| Norwalk Water Supply | 14,334 | 0 (not detected) |
| Carlisle Water Supply | 4,170 | 1.5 ppb |
| Milo Public Water Supply | 788 | 0 (not detected) |
| New Virginia Water Supply | 498 | 1.8 ppb |
| Martensdale Water Supply | 421 | 0 (not detected) |
| Lacona Water Supply | 361 | 2 ppb |
| North American Mobile Home Park | 235 | 0.2 ppb |
| Hartford Mhc Llc | 183 | 0 (not detected) |
| Indian Ridge Mobile Home Community | 153 | 0.56 ppb |
What to do in your house
Look up your address in Wilshire Hills Mhc'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 Wilshire Hills Mhc 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. Small systems behave differently: why small systems go over more often.