Evaluating household water treatment options :  health-based targets and microbiological performance specifications / 
World Health Organization. 
 - Geneva :  World Health Organization,  2011. 
 - v, 59 p. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Potable water<br/>Water treatment<br/>Water Purification<br/>Water supply<br/>Water quality