UNITED ARCHITECS of the Philippines
http://www.united-architects.org

NATIONAL MASTER PLUMBERS of the Philippines Association
http://www.nampap.org

PHILIPPINE SOCIETY OF SANITARY ENGINEERS INC.
http://www.psse.org.ph

PHILIPPINE ASSOCIATION OF WATER DISTRICTS
http://www.pawd.org.ph

PHILGEPS Philippine Electronic Procurement system
http://www.philgeps.net

Maynilad
http://www.mayniladwater.com.ph

LWUA Local Water Utilities Administration
http://www.lwua.gov.ph