Decatur City Council members voted unanimously on Monday, April 17 to fund an agreement with Dunn Company for more than $2.2 million to provide asphalt street reconstruction on streets thatâ¦ Read more about More than $4.2 million in City Street Repairs Set to Begin (See Story For Project Map)
The black water tank holds the waste from the toilet. The size of these tanks varies with the size of trailer. As an example, a 24-foot-long trailer may have a fresh water tank that holds 48 gallons, and gray and black water tanks that each holds 32 gallons. A 35-foot-long travel trailer can carry more weight, so it may have a fresh water tank that holds 90 gallons.
It may be necessary to use some type of sewer hose support to get a good angle from the RV to the campground sewer connection so the tanks drain properly when you empty them. The small valve is for the gray water tank and the large valve is for the black water tank.One golden rule for RV holding tanks is to never dump the black water tank until it is at least two thirds full. You want the tank nearly full so the weight and the gravity will force the contents of the tank to drain properly.our RV has what is referred to as a gray water holding tank and a black water holding tank. The gray water holding tank collects dirty water from the kitchen sink, bathroom sink and shower. The black water holding tank is for the toilet. These tanks terminate into one main outlet used to empty the holding tanks.