Lake Hill Park - Thayer Inc., IN
Lead detected, under the action levels
Latest 90th-percentile lead: 0.99 ppb (monitoring period 2022-2024). 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
Lake Hill Park - Thayer Inc. serves about 104 people through 81 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in White County, Indiana. EPA system ID: IN5291007; phone on file: 219-253-7818. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2021 (1.78 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Lake Hill Park - Thayer Inc. is 10.9 ppb across 4 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0.99 ppb |
| 2021 | 1.78 ppb |
| 2018 | 0 (not detected) |
| 2018 | 10.9 ppb over 10 |
Where this result ranks
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. Lake Hill Park - Thayer Inc.'s 0.99 ppb sits at the 41st percentile in Indiana and the 50th nationally (higher means more lead).
Other water systems in White County
9 other systems share White County; 6 of them have a higher latest lead result than Lake Hill Park - Thayer Inc.. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Monticello Water Works | 5,300 | 1.99 ppb |
| Brookston Water Department | 1,815 | 0 (not detected) |
| Monon Water Utility | 1,700 | 2.29 ppb |
| Wolcott Water Works | 1,001 | 2.31 ppb |
| Chalmers Water Works | 550 | 1.89 ppb |
| Reynolds Water Works | 533 | 0 (not detected) |
| Royal Oaks Homeowners Assn., Inc. | 390 | 6.5 ppb |
| Lazy Oaks | 48 | - |
| Scenic View Mobile Home Community | 25 | 4.11 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Monon, 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 Lake Hill Park - Thayer Inc. 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. The action level is dropping - the 10 ppb rule from 2027.