WhatsDown provides desktop and mobile-based map views of environmental risks to parties who need to know up-to-date information about known spill sites, institutional controls, or groundwater plumes prior to doing invasive work. This product serves a utility company or city public works department, and builds a health and safety advisory across the service area. Prior to an excavation, the internal environmental team builds a location specific advisory. In the field, the field team can query the location. The advisory provides NIOSH guidance to inform the excavator, and often depth to groundwater. Coverage includes spill sites, groundwater plumes and institutional controls.