Inwood Estates, IN
Lead detected, under the action levels
Latest 90th-percentile lead: 1.4 ppb (monitoring period 2025-2027). 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
Inwood Estates serves about 50 people through 22 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Marshall County, Indiana. EPA system ID: IN5250006; phone on file: 574-225-0053. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
That is up 1.4 ppb from 0 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Inwood Estates is 1.4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2027 | 1.4 ppb |
| 2024 | 0 (not detected) |
| 2023 | 0.24 ppb |
Against other Indiana systems
Of the 687 Indiana systems with a lead result, the median latest reading is 1.31 ppb; 6 are over 15 ppb right now and 36 have gone over at some point. Inwood Estates's 1.4 ppb sits at the 51st percentile in Indiana and the 61st nationally (higher means more lead).
Nearby utilities
11 other systems share Marshall County; 4 of them have a higher latest lead result than Inwood Estates. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Plymouth Water Department | 10,241 | 2.7 ppb |
| Bremen Water Department | 4,516 | 2.6 ppb |
| Culver Educational Foundation | 1,940 | 0 (not detected) |
| Bourbon Water Department | 1,767 | 0 (not detected) |
| Argos Municipal Water Plant | 1,680 | 1.2 ppb |
| Culver Water Department | 1,391 | 1.74 ppb |
| Ancilla Domini (Convent) | 680 | 5.5 ppb |
| Gatewood Estates | 202 | 0 (not detected) |
| Pretty View Condominium Owners Assoc | 85 | 1.18 ppb |
| Creekside Manor Mhp | 73 | 0 (not detected) |
Next steps for Winamac, IN
Test your own tap with a certified lab first-draw sample; Winamac, IN 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 Inwood Estates 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. Size matters more than most people expect: small vs large water systems.