Liquid waste management covers a wide range of services that Wanless manages for customers. Below is a list of different liquid waste services Wanless can provide:

* Grease trap cleansing
* Septic tank pump-out and cleaning
* Dragline cleaning
* Holding tank maintenance
* Oily water and processed waste collection
* Sewerage transportation
* Contaminated water and soil
* Chemical wastes (solvents, inks, paint, thinners)
* Organic solvents (paint, fuels, oils, hydraulic spoils)
* Asbestos removal
* Photographic waste removal