Water purification filters; Mixer faucets for water pipes; Irrigation sprinklers; Dripper irrigation systems, comprised of pipes, valves, filters and regulators; Waste water treatment tanks; Waste water purification installations; Water treatment apparatus for infusing irrigation water with liquid fertilizer; External filtering device for use in a local containment area for removing oil and other contaminants from storm drain effluent as it exits storm water systems; Drip irrigation emitters; Rainwater purification installations; Plumbing fittings, namely, drains; Sustainable onsite water recycling and wastewater treatment systems; Water purification installations