Rafter D Improvement & Service District, WY
Lead detected, under the action levels
Latest 90th-percentile lead: 1 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.
Rafter D Improvement & Service District at a glance
Rafter D Improvement & Service District serves about 40 people through 16 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Campbell County, Wyoming. EPA system ID: WY5601609; phone on file: 307-299-3544. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Rafter D Improvement & Service District's lead record
Against the period ending 2021 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Rafter D Improvement & Service District is 3 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1 ppb |
| 2021 | 1 ppb |
| 2018 | 3 ppb |
Where this result ranks
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. Rafter D Improvement & Service District's 1 ppb sits at the 34th percentile in Wyoming and the 50th nationally (higher means more lead).
Nearby utilities
44 other systems share Campbell County; 18 of them have a higher latest lead result than Rafter D Improvement & Service District. 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 |
| Sleepy Hollow Subdivision | 2,400 | 1 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 |
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 Rafter D Improvement & Service District 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.