Free RV Dump Stations in Wyoming
There are 4 free RV dump stations in Wyoming in our directory, in 4 towns, and 2 of them also have fresh water. See the map, then pick the closest one below.
Map
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All free dump stations in Wyoming
| Name | Location | Type | Fee | Fresh water |
|---|---|---|---|---|
| Casper East RV Park & Campground Dump Station | Casper, WY | Dump station | Free | Yes |
| El Rancho RV Dump Station (Hwy 26) | Near El Rancho, WY | Dump station | Free | No |
| Mammoth RV Dump Station (Loop A) | Near Mammoth, WY | Dump station | Free | Yes |
| Thayne RV Dump Station (N Main St) | Thayne, WY | Dump station | Free | — |
Frequently asked questions
Where can I dump my RV tanks for free in Wyoming?
We list 4 free RV dump stations in Wyoming, in Casper, El Rancho, Mammoth, Thayne. Free sites can add fees or close for winter, so check signs on arrival.
Do free dump stations in Wyoming have fresh water?
Casper East RV Park & Campground Dump Station (Casper), Mammoth RV Dump Station (Loop A) (Mammoth) list potable water. Never fill your fresh tank from the rinse hose.
Are there free dump stations along interstates in Wyoming?
Yes: Casper East RV Park & Campground Dump Station (I-25 exit 186), El Rancho RV Dump Station (Hwy 26) (I-25 exit 92).