External ballast and bilge water filtering and absorbing device for use in a local containment area for removing aquatic nonindigenous species, oil and other contaminants from the effluent; Filters for drinking water; Plumbing fixtures, namely, shower sprayers; Purification installations for sewage; Sewage purification installations; Waste water purification units; Water desalination plants; Water filters; Water filtration and purification units and replacement cartridges and filters therefor...