If you're in Allison, Iowa and need to dump your black and gray water, there are several options available for you. You can check out R Campground, Rest Area I-35 NB/SB Northwood, City Sewage Plant or Love's Travel Stop. These dump stations offer fresh water, a hose for flushing tanks, and waste disposal. Additionally, Love's Travel Stop has a trash bin available for customers.

Pine Lake State Park
22628 Highway S56., Eldora, Hardin County, Iowa, United States
, Holidays: Open, Hours: 05:00 PM to 05:00 PM

George Wyth Memorial State Park
3659 Wyth Road, Waterloo, Black Hawk County, Iowa, United States
Open year round, Holidays: Open, Hours: 24/7

KOA - Waterloo / Lost Island Waterpark KOA
4550 Hess Road, Waterloo, Black Hawk County, Iowa, United States
Open year round, Holidays: Open, Hours: 24/7

Pilot Flying J Travel Plazas #637
445 Drive, Evansdale, Black Hawk County, Iowa, United States
Open year round, Holidays: Open, Hours: 24/7

Clear Lake State Park
2730 Lake View Drive, Clear Lake, Cerro Gordo County, Iowa, United States
Open year round, Holidays: Open, Hours: 24/7