3+1 Sit On Waste Tank 6,500L for Toilet Blocks

This is the larger of the two sit-on waste tanks: 6,500 litres in a 4.88 m x 2.7 m steel pan just 630 mm deep, built to sit directly beneath a steel toilet cabin where there is no sewer to connect to. The extra 1,700 litres over the 4,800 litre version buys roughly a third more time between pump-outs, which on a remote site is the difference between a scheduled service and an emergency one.

It is built as an internal steel framework with supports, clad in 2 mm steel and primed black. Two 150 mm emptying points sit at the corners under covers so a tanker can service it from either side.

Sizing the interval

Estimate daily use honestly – headcount times a realistic per-person figure – then divide into 6,500 and take a margin off the answer. Tanks are always emptied later than planned, and the cost of a call-out on a Saturday dwarfs the cost of an extra scheduled service.

Tanker access

Check that a vacuum truck can get hose-reach to a corner point in the wet, not just in the dry. A tank that becomes unreachable after rain is a genuine problem on unsealed rural and mine-site access tracks.

Matching cabins

The tank pairs with the steel toilet cabins listed under toilet and shower blocks and cabins for sale. On-site wastewater is regulated by the local council or health authority in every state, so read our approval guide before ordering.

Specifications