RA 1378 Plumbing Law
RA 1378 Selected Sections
Revised National Plumbing Code of the Philippines
BP 344
2015 Uniform Plumbing Code
2018 International Plumbing Code
PD 856 Code on Sanitation
RA 9275 Philippine Clean Water Act of 2004
RA 8749 Philippine Clean Air Act of 1999
PD 1067 Water Code of the Philippines
RA 1364 Sanitary Engineering Law