Underground water detection using electrical resistivity and ground conductivity using frequency domain electromagnetic.The hydrologist will use both the modern pqwt Water detecting machine method and the traditional dowsing copper rods to detect underground water streams.The machine scans to a depth of 100m to 150m deep detecting for water aquifers through rock fracturing.Not every area has underground water so better invest in hydrogeological Surveys and get our expert advise before wasting money.