Tax AuditsThe Wisconsin Onsite Water Recycling Association May newsletter reported that the state Depart-ment of Revenue is auditing more septic system installer companies as part of a crackdown on sales tax collections. The agency requires contractors to collect sales tax for grading the topsoil and laying sod or planting seed on job sites. The department’s sale tax brochure is available from WOWRA at 608/ 256-7757. Thirteen members completed the two-day Onsite Evaluator course in May, bringing the total of certified professionals to 70.Researchers Track GroundwaterIn the first study of its kind, Stanford University researchers in-stalled 120 data loggers in wells
