Stonebrook Utility Company, NE
Lead detected, under the action levels
Latest 90th-percentile lead: 1.56 ppb (monitoring period 2025-2025). 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
Stonebrook Utility Company serves about 136 people through 39 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Seminole County, Nebraska. EPA system ID: OK2006759; phone on file: 402-434-3344. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2025 (2.17 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Stonebrook Utility Company is 4.38 ppb across 11 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.56 ppb |
| 2025 | 2.17 ppb |
| 2024 | 1.19 ppb |
| 2024 | 1.83 ppb |
| 2023 | 1.18 ppb |
| 2023 | 1.09 ppb |
| 2022 | 1.47 ppb |
| 2022 | 2.28 ppb |
| 2021 | 4.38 ppb |
| 2021 | 3.91 ppb |
| 2020 | 3.18 ppb |
How Stonebrook Utility Company compares
Of the 576 Nebraska systems with a lead result, the median latest reading is 1.55 ppb; 7 are over 15 ppb right now and 29 have gone over at some point. Stonebrook Utility Company's 1.56 ppb sits at the 51st percentile in Nebraska and the 64th nationally (higher means more lead).
Your move
Test your own tap with a certified lab first-draw sample; Lincoln, NE 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 Stonebrook Utility Company 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.