Winchester Hills, WY
Lead detected, under the action levels
Latest 90th-percentile lead: 3 ppb (monitoring period 2026-2026). 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
Winchester Hills serves about 1,078 people through 423 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Laramie County, Wyoming. EPA system ID: WY5600779; phone on file: 307-421-2517. They can tell you what your service line is made of and whether they pay to replace it.
Winchester Hills's lead record
Against the period ending 2025 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Winchester Hills is 3 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3 ppb |
| 2025 | 2 ppb |
| 2024 | 3 ppb |
| 2023 | 2 ppb |
| 2022 | 2 ppb |
| 2019 | 1 ppb |
| 2016 | 0 (not detected) |
How Winchester Hills compares
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. Winchester Hills's 3 ppb sits at the 84th percentile in Wyoming and the 82nd nationally (higher means more lead).
Nearby utilities
15 other systems share Laramie County; 3 of them have a higher latest lead result than Winchester Hills. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Cheyenne Board Of Public Utilities | 64,165 | 15 ppb |
| South Cheyenne Water & Sewer District | 10,000 | 6 ppb |
| Usaf F.E. Warren Afb | 5,500 | 0 (not detected) |
| Burns Board Of Public Utilities | 1,024 | 1 ppb |
| West Winds | 663 | 0 (not detected) |
| Big Country Estates | 615 | 1 ppb |
| Cimmaron Village | 327 | 2 ppb |
| Orchard Valley Water Company | 260 | 0 (not detected) |
| Albin, Town Of | 181 | 0 (not detected) |
| Englewood Village Mhp | 152 | 2 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Cheyenne, 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 Winchester Hills 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. Size matters more than most people expect: small vs large water systems.