Environmental problems in the Philippines include pollution, mining and logging, deforestation, threats to environmental activists, dynamite fishing, landslides, coastal erosion, biodiversity loss, extinction, global warming and climate change Environmental issues include major challenges like climate change, plastic pollution, deforestation, water and air pollution, and loss of biodiversity. These problems are driven by human activities such as industrial emissions, deforestation for agriculture, and excessive consumption, leading to consequences like extreme weather, habitat destruction, and negative health effects. Addressing these issues requires reducing harmful pollutants, transitioning to sustainable practices, and implementing global and local policies.

Due to the paucity of extant documents, a complete history of land use in the archipelago remains unwritten. However, relevant data shows destructive land use increased significantly in the eighteenth century when Spanish colonialism enhanced its extraction of the archipelago's resources for the early modern global market. The Philippines is projected to be one of the most vulnerable countries to the impacts of climate change, which would exacerbate weather extremes. As the Philippines lies on the Pacific Ring of Fire, it is prone to natural disasters, like earthquakes, typhoons, and volcanic eruptions.

In 2021, the Philippines ranked the fourth most affected country from "weather-related loss events", partly due to the close proximity of major infrastructure and residential areas to the coast and unreliable government support. One of the most devastating typhoons to hit the archipelago was Typhoon Haiyan, known locally as Yolanda, in 2013 that killed 6,300 people and left 28,689 injured.

Congress passed the Clean Air Act of 1999, the Philippine Clean Water Act of 2004, the Climate Change Act of 2009 to address environmental issues. The country is also a signatory to the Paris Agreement. However, research has found that outside of cities, the general public doesn't feel equally informed. Environmental activists and land defenders, consisting mostly of Indigenous communities who have been attempting to bring attention to the environmental issues in the country have been met with violence or murder. As a result, the Philippines has been ranked one of the most dangerous places in the world for environmental activists. It also has one of the highest percentages of climate change denialists in the world.

Climate change

Air pollution Air pollution causes significant health and economic problems in the Philippines. An estimated 67,000 deaths annually have been directly linked to air pollution.

The Department of Environment and Natural Resources is tasked with implementing the Clean Air Act of 1999 to monitor and prevent air pollution in the country.

Deforestation

Over the course of the twentieth century, the forest cover of the Philippines dropped from 70 percent down to 20 percent. In total, 46 species are endangered, and 4 have been eradicated completely. Only 3.2 percent of total rainforest is left. Based on an analysis of land use pattern maps and a road map, an estimated 9.8 million acres of forests were lost in the Philippines from 1934 to 1988. As of 2015, the country's forest cover has been reduced to just 7 million hectares.

According to IBON Foundation, deforestation is caused by logging, mining, and land conversion for corporate agriculture, cash crops, real estate, and infrastructure. Illegal logging occurs in the Philippines and intensifies flood damage in some areas.

According to scholar Jessica Mathews, short-sighted policies by the Filipino government have contributed to the high rate of deforestation: The government regularly granted logging concessions of less than ten years. Since it takes 30–35 years for a second-growth forest to mature, loggers had no incentive to replant. Compounding the error, flat royalties encouraged the loggers to remove only the most valuable species. A horrendous 40 percent of the harvestable lumber never left the forests but, having been damaged in the logging, rotted or was burned in place. The unsurprising result of these and related policies is that out of 17 million hectares of closed forests that flourished early in the century only 1.2 million remain today.

The Philippines had a 2018 Forest Landscape Integrity Index mean score of 5.91/10, ranking it 91st globally out of 172 countries.

Water pollution

The Philippines has abundant water resources, with an average availability of 5,302 m3 per capita per year. However, water scarcity issues arise in certain regions and particularly in specific seasons. Approximately 58% of groundwater samples are contaminated, indicating significant pollution. The main source of pollution is untreated domestic and industrial wastewater. Roughly 36% of Philippine river systems are considered suitable for public water supply. As of 2023, 48% of the population had access to safely managed or piped water services.

By 2025, water availability is projected to be marginal in most major cities and in 8 of the 19 major river basins. Besides severe health concerns, water pollution also leads to problems in the fishing and tourism industries., p. 18–19 The national government recognized the problem and since 2004 has sought to introduce sustainable water resources development management (see below).

Roughly 5% of the population is connected to a sewer network. The vast majority uses flush toilets connected to septic tanks. Since sludge treatment and disposal facilities are rare, most effluents are discharged into the ecosystem without treatment., p. 107 According to the Asian Development Bank, the Pasig River is one of the world's most polluted rivers, running through the capital city of Manila. In March 2008, Manila Water announced that a wastewater treatment plant will be constructed in Taguig.

In 2006, The first constructed wetland serving about 700 households was completed in a peri-urban area of Bayawan. Serving approximately 700 households, it was part of a program to resettle families that lived along the coast in informal settlements who had no access to safe water supply and sanitation facilities.

A 2023 study estimated that the Pasig River contributed up to 63,700 metric tons of plastic into the ocean each year—the second largest relative to its size.

Destructive fishing

General Commercial fishing is causing environmental problems, exhausting food supply, and threatening livelihoods in the Philippines and around the world. The Philippines has a strong fishing culture due to its historically productive and diverse marine ecosystems. In 2018, 927,617 people were officially reported as being involved in "capture fishing", and fish contributes to 50% of a Filipinos protein consumption. This fish reliance has contributed to the current overfishing of 70% of Philippine fishing grounds and about 40% of fish caught being done illegally. Coastal communities and local fishers organized themselves to implement sustainable fishing practices and protect fishing grounds from commercial fishing fleets that are destroying marine habitats.

COVID-19 lockdowns seem to have allowed an increase in illegal fishing. Karagatan Patrol ships using VIIRS (visible infrared imaging lure lights) have detected an increase in apparent commercial fishing vessels from 3,602 in February 2020 (before COVID-19 lockdowns) to 5,950 in March, which went back down to 1,666 in May when lockdown eased. These vessels were detected in waters that only allow small artisanal fishermen using passive fishing methods, due to the area being a spawning ground for most fish species.

Even after COVID-19, VIIRS (Visible Infrared Imaging Radiometer Suite) technology has tracked a surge in suspected illegal [fishing] activity. The data show a steady upward trend in illegal fishing, with VIIRS Boat Detections (VBDs) rising by 9% from 2022 to 2023 and further increasing by 10.5% in 2024.

Dynamite and cyanide fishing Dynamite fishing, cyanide fishing, and bottom trawling are fishing methods that cause extensive damage to coral reefs. These practices are major threats to Philippine marine life and ecosystems.

Dynamite fishing, also known as blast fishing and fish bombing, was outlawed in 1932.University of British Columbia. "Coral reefs suffering in Philippines despite outlawing damaging fishing practices: New research finds dynamite, poison still common fishing methods." ScienceDaily. ScienceDaily, March 16, 2018. <www.sciencedaily.com/releases/2018/03/180316100307.htm>. It is a practice of throwing bombs into the water to kill and stun the fish caught in the blast, and then collecting the fish. The process kills both fish eggs and fish too young to sell. It also destroys the surrounding habitat, including coral reefs in the area. This damage is estimated to have cause $99.2 billion in losses a year, according to a study by Rhodora Azanza of the University of the Philippines. As such, average fish yields have been reported to be decreasing. Jimely Flores, a senior marine scientist for Oceana, described the situation saying, "In some dynamited areas, if you dive you don't see any fish at all."

Commercial fishing vessels have used cyanide to stun and capture coral reef fish in the Philippines.

Solid waste

General According to Metro Manila Development Authority (MMDA), the country produces an average of 41 kilotons of garbage daily with almost 10 kilotons/day coming from Metro Manila alone. As of May 2024, there are 296 garbage disposal sites in the Philippines.

While most local government units establish a Material Recovery Facility (MRF), implement segregation at the source, and collect and process all recyclable and biodegradable materials, most of the municipal solid wastes are either disposed in the dump sites or openly burned, which further worsen the quality of heavy polluted air in the cities.

Republic Act No. 9003 or the "Ecological Solid Waste Management Act of 2000" provides for a solid waste management program. It orders the adoption of sanitary landfills and the closure of dangerous open dump sites.

In September 2025, regional environmental bodies convened an environmental summit emphasizing waste-to-resource strategies: recycling, waste-to-energy, community-based solid-waste management, showing a policy shift from disposal to circular management.

Plastic

According to World Bank calculations, the Philippines generates 2.7 million tons of plastic waste every year. Around 20% of the plastic waste makes its way to the sea. One estimate ranks the Philippines as the world's third largest producer of oceanic plastic waste. The Pasig River deposits 72,000 tons of plastic into the sea annually, mostly during monsoons, placing it among the world's top 10 rivers that bring plastic waste to the sea. A 2023 study by The Ocean Cleanup found that the Pasig River is responsible for roughly 63,700 metric tons of plastic entering the ocean each year, accounting for over 6% of global riverine plastic emissions. Nationally, the Philippines produces approximately 2.15 to 2.7 million metric tons of plastic annually, with only about 9–12% being recycled.

In response, the Philippine government enacted the Extended Producer Responsibility (EPR) Act of 2022, which requires large companies to recover and divert 80% of their plastic packaging waste by 2028. Local government units have also implemented plastic bag bans and bottle recovery programs in Metro Manila and other major cities. Plastic waste has significant ecological and economic impacts, including the degradation of marine habitats, ingestion of plastics by fish and seabirds, and reduced water quality. These issues affect coastal communities that depend on fishing and tourism for livelihood.

Government response