SESL Australia was established in 1983 as Sydney Environmental & Soil Laboratory by Simon Leake. SESL provides independent laboratory testing and advisory services to landscape, horticulture, sport and leisure turf, civil construction, environment, government, mining and the waste industry.
It offers sample collection, monitoring, NATA-accredited analysis and interpretation of soil, water, plant tissue and wastes. SESL also offers training courses on a range of earth science topics mainly focused on urban horticulture, sport and leisure turf, and environmental water.