Obando, just like the other towns of Bulacan, has two pronounced seasons: dry and wet season. The wet season is from May to October and the dry season is from November to April. The rainfall of the wet season accounts for about 80% of the annual rainfall, which is due to west monsoons and typhoons. Currently the major problem of our town is the Obando Landfill. The recently approved Obando Landfill converting 44.4 hectares of Salambao River to a garbage dump. A waste and pollution watchdog has appealed to Department of Environment and Natural Resources (DENR) Secretary Ramon Paje to intervene in the proposed construction of a waste landfill facility in Obando, Bulacan, citing the proximity of the waste facility to Manila Bay.
Heavy flooding during rainy seasons
- River pollution caused by the Tanza, Navotas dumpsite. In 2002, under the leadership of Mayor Nesty Joaquin, the Sangguniang Bayan of Obando, Bulacan passed a controversial resolution allowing all the Phileco (Philippine Ecology Systems Corp.) barges that contains tons of Metro Manila's garbage to pass the river of Obando and dumped it in a river-turned "controlled" dumpsite facility in Tanza, Navotas which is only 1 km away from Obando. Mass actions followed but local officials failed to stop the dumping up to this date. Studies showed that the operation of the dump was polluting the river and had caused several diseases among residents, mostly old folks, women and children.
