There could be many more options but for people who are looking for simple softwares to handle Waterpoint Mapper is the best solution.
MOVING BED BIOFILM REACTOR (MBBR) SYSTEM COMPONENT MANUAL FOR PRIVATE ONSITE WASTEWATER TREATMENT SYSTEMS - A wonredful manual for you http://dsps.wi.gov/sb/docs/sb-ppalopp/20120219A.pdf
I want to do some water quality assessment. I did physico-chemical analysis of some groundwater samples around my study area. Would GIS be useful for me in assessing the water quality of the stations chosen?