Subsurface Technologies Inc. provides a full range of well and pump services to within Pennsylvania and surrounding states. STI is the developer and exclusive provider of Aqua Freed well rehabilitation technology and the revolutionary Aqua Gard preventative well maintenance system. STI also provides down-hole color video inspection, long and short range step rate pump testing, groundwater microbial and water quality consulting, line shaft turbine & sumersible pump sales, service and installation