Assessment of on-site graywater and combined wastewater treatment and recycling systems / 
National Association of Plumbing-Heating-Cooling Contractors. 
 - Falls Church, VA :  National Association of Plumbing-Heating-Cooling Contractors,  1992. 
 - various pagings :  ill. ;  28 cm.  
<br/><br/>Includes bibliographical references (p. VIII-1- VIII-3). 
<br/><br/>Characteristics of wastewater -- Graywater recycling systems -- Combined wastewater treatment and recycling systems -- Barriers and constraints -- Economics of on-site wastewater treatment and recycling systems. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification.<br/>Water--Purification.<br/>Water reuse.
<br/><br/><label>Dewey Class. No.: </label>628.3