Fun Fact : The Naguilian River in La Union has been hailed as the “cleanest river” in the Philippines last 2021. That’s according to the the Department of Environment and Natural Resources (DENR), which handed the award. With a score of 93 percent (Naguilian River’s highest rating ever in Ph history), the body of water bagged the first place in the Search for the Best R.I.V.E.Rs (Recognizing Individuals/Institutions towards Vibrant and Enhanced Rivers) for Life Award. Naguilian, La Union is also the producer of the original 'Basi' and 'Vinegar'.