GUIDELINES ON THE PROCEDURES AND TECHNICAL REQUIREMENTS FOR THE ISSUANCE OF A CERTIFICATION ALLOWING THE SAFE RE-USE OF WASTEWATER FOR PURPOSES OF IRRIGATION AND OTHER AGRICULTU…
National Administrative Register [ BSWM ADMINISTRATIVE ORDER NO. 26, s. 2007, November 11, 2007 ]
Text Available at Office of the National Administrative Register, U.P. Law Complex, Diliman, Quezon City
Adopted: 11 Nov. 2007