Sleepy Hollow Subdivision, WY
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2024-2026). 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
Sleepy Hollow Subdivision serves about 2,400 people through 420 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Campbell County, Wyoming. EPA system ID: WY5600764; phone on file: 307-299-3544. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2023 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Sleepy Hollow Subdivision is 2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1 ppb |
| 2023 | 2 ppb |
| 2020 | 2 ppb |
| 2017 | 2 ppb |
Against other Wyoming systems
Of the 311 Wyoming systems with a lead result, the median latest reading is 1 ppb; 0 are over 15 ppb right now and 16 have gone over at some point. Sleepy Hollow Subdivision's 1 ppb sits at the 52nd percentile in Wyoming and the 54th nationally (higher means more lead).
Other water systems in Campbell County
44 other systems share Campbell County; 18 of them have a higher latest lead result than Sleepy Hollow Subdivision. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Gillette, City Of | 32,222 | 2 ppb |
| Wright Water & Sewer District | 3,207 | 3 ppb |
| Antelope Valley I&S District (Avisd) | 1,280 | 0 (not detected) |
| Fox Park Subdivision | 843 | 2 ppb |
| Heritage Village Subdivision | 750 | 2 ppb |
| Foothills Mobile Home Park | 735 | 1 ppb |
| Eastview Manufactured Home Community | 688 | 0 (not detected) |
| Crestview Estates Subdivision | 500 | 0 (not detected) |
| Westview Mhc | 416 | 1 ppb |
| Means Improvement & Service District | 410 | 3 ppb |
Next steps for Gillette, WY
Test your own tap with a certified lab first-draw sample; Gillette, WY 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 Sleepy Hollow Subdivision 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.