Water-based gas turbine compressor cleaner is designed to use for both on line and off line wet cleaning applications. It provides excellent cleaning efficiency similar to that attainable with most solvent-based products. It is formulated from a combination of non-ionic surfactants and emulsifiers specially designed to remove deposits commonly find in gas turbine compressors. For on line cleaning the diluted fluid is injected into the compressor section of the turbine while the unit is in operation. Average power loss is reduced and periodic off line cleaning intervals can be extended. For off line cleaning using typical soak and rinse procedures is used at the same dilution strength and power recovery is normally significant.