computer programs for use in the field of hydrology and instruments used in the field of hydrology, namely, on-site water supply and water quality monitoring apparatuses and parts and fittings therefore; meters for measuring water level, water temperature, and water flow rate; probes for measuring water pressure and depth; data collection systems for use in the field of hydrology consisting of data logger; and probes for sensing and collecting hydrologic data concerning contaminates and impur...