Negros Occidental residents report foul river odor, demand investigation.

For months, residents of four villages in Binalbagan, Negros Occidental, have been living with a river they say smells foul and looks murky. The stench from the Binalbagan River has become so persistent that it has drawn complaints from fishermen and families who rely on the waterway, with some pointing fingers at a local sugar company. The situation escalated in April 2025 when a molasses spill from a sugar mill affected the same four barangays, adding a new layer of urgency to long-standing grievances.

4
Villages affected by river stench
Rappler

~2,490
Tons of molasses lost in April 2025 spill
Manila Bulletin

43°C
Temperature on day of molasses evaporation
Manila Bulletin

10+
Years residents have raised pollution concerns
Rappler

These figures frame a dispute that involves not just a single industrial accident but a decade of unresolved complaints, competing explanations, and a community that feels unheard. Understanding what happened, who is responsible, and what the next steps are requires looking at the evidence from multiple angles.

What residents say about the river and its impact

🐟
Lost Livelihoods
Fisherman Salvador Bayona said families who depend on river fishing have seen their catch decline sharply since late 2023, when the odor and murky water worsened.

🫁
Health Risks
Residents report that the pollution has aggravated respiratory conditions, especially among those with underlying health issues, according to Bayona’s account to Rappler.

🌿
Protected Area at Risk
One affected village, Canmuros, hosts the Mangrove Eco Park and Wild Life Sanctuary, a protected area dedicated to conserving local flora and fauna.

The core of the residents’ complaint is straightforward: they believe the Binalbagan-Isabela Sugar Company (BISCOM) has been releasing wastewater into the river. Bayona, speaking on behalf of Barangay Canmuros, told Rappler that the stench has affected the villages of Marina, San Juan, Progreso, and Canmuros. He also appealed directly to Environment Secretary Maria Antonia Yulo-Loyzaga, expressing worry about the river’s biodiversity. The situation is not new — residents say they have been raising concerns about river pollution for at least a decade, but their pleas, according to Bayona, “fell on deaf ears.”

BISCOM
Binalbagan-Isabela Sugar Company, the sugar mill that residents allege is responsible for wastewater discharge into the Binalbagan River. The company denies the accusation.

The company’s response and alternative explanations

BISCOM has firmly denied the allegations. In a statement, the company asserted that it is “fully compliant” with all government rules and that it secured permits from the DENR and other agencies “before the start of our operation.” The company also assured the public that it is “discharging zero waste to the water.” Instead, BISCOM pointed to other possible sources of pollution, including poultry and swine farms located near the river.

Municipal Environment and Natural Resources Officer (MENRO) Kenny Zamora offered another factor: the El Niño phenomenon. He explained that the dry conditions reduced water flow upstream, preventing a fresh current from reaching the ocean and allowing pollutants to concentrate. This explanation does not rule out industrial discharge, but it complicates the picture by introducing a natural variable that may have worsened an existing problem.

Key Insight
Multiple factors, one river
The Binalbagan River’s condition may result from a combination of industrial activity, agricultural runoff, and drought conditions. No single explanation has been confirmed by laboratory results as of the latest reports.

The Kabankalan City Environment and Natural Resources Office (CENRO) tested the river’s water last year, but residents say they are still waiting for the results. This delay has fueled frustration and criticism of the MENRO for failing to act promptly on complaints.

The April 2025 molasses spill: a separate but related incident

On April 19, 2025, a different kind of event brought renewed attention to the river. Intense heat reaching 43°C caused molasses stored in a pond-type stockpile at BISCOM to evaporate and then spill. According to CENRO-Kabankalan Supervising Environment Management Specialist Lucia Salazar, about 4,890 tons of molasses were in the stockpile, but only 2,400 tons remained after the spill — meaning roughly 2,490 tons were lost. The company collected the spilled molasses but failed to prevent it from reaching the river.

→ Scroll right to see all columns

Source: Manila Bulletin report
FactorDetailsStatus
Molasses lost~2,490 tons evaporated or spilledConfirmed by CENRO
Fish killReported in Barangay CanmorosConfirmed by CENRO
ContainmentSandbags placed; bio enzymes advisedOngoing cleanup
Water samplesSent to EMB in Iloilo CityAwaiting lab results

Salazar noted that while molasses is a waste agricultural product, too much of it can be harmful. The Philippine Coast Guard (PCG) assessed that molasses is not as hazardous to the marine environment as oil, but Lt. Junior Grade James Carbajosa emphasized that the company has the responsibility to ensure the total cleanup of the river. The Pollution Adjudication Board (PAB) will decide on any penalty to be imposed on BISCOM, and the company may face sanctions depending on the assessment of the Environment Management Bureau (EMB).

Mayor Alejandro Mirasol said the spill has been contained and cleanup is ongoing. The local government apologized for the inconvenience and assured affected residents that if health issues arise, they will be accommodated at the town infirmary.

What residents and authorities can do next

For those living near the Binalbagan River, the situation involves both immediate health concerns and longer-term accountability. Here are the practical steps that have been taken or are still needed.

Awaiting laboratory results from water samples

CENRO collected water samples from the river after the molasses spill and sent them to the EMB in Iloilo City for testing. These results will be critical in determining the extent of contamination and whether BISCOM or other parties are responsible. Residents and local officials are waiting for these findings before further action can be taken.

Monitoring health and reporting symptoms

The local government has offered to accommodate affected residents at the town infirmary if health issues arise. Anyone experiencing respiratory problems or other symptoms linked to the river should report to the barangay health center or the municipal health office. Documenting cases can strengthen the case for intervention.

Engaging the Pollution Adjudication Board

The PAB has the authority to impose penalties on BISCOM if the investigation finds violations. Residents can submit formal complaints to the PAB through the DENR regional office, providing evidence such as photographs, videos, and witness accounts. This process is separate from the ongoing cleanup and can lead to fines or operational restrictions.

Understanding the role of the Philippine Coast Guard

The PCG has investigated the molasses spill and confirmed that the company is responsible for cleanup. Residents can report any new spills or ongoing pollution to the PCG-Southern Negros Occidental station. The PCG’s assessment that molasses is less hazardous than oil does not reduce the company’s obligation to restore the river.

Frequently asked questions about the Binalbagan River situation

Is the river safe for fishing right now?
Authorities have not issued an official advisory, but fish kill has been reported in Barangay Canmoros. Until water test results are released, fishing in affected areas carries unknown risks.
What is the difference between the ongoing odor issue and the molasses spill?
The odor issue dates back to late 2023 and is linked by residents to alleged wastewater discharge. The molasses spill occurred in April 2025 and is a separate, confirmed incident. Both affect the same river and villages.
Has BISCOM been fined or penalized yet?
Not yet. The Pollution Adjudication Board will decide on penalties after reviewing the EMB’s laboratory results and assessment. No fines have been announced as of the latest reports.
Can residents file a case directly against the company?
Yes. Residents can file a complaint with the DENR or the PAB. They can also seek legal assistance from the Public Attorney’s Office or environmental law groups. Evidence such as photos and medical records strengthens the case.
What role does El Niño play in this situation?
The MENRO officer explained that dry conditions reduce water flow, which can concentrate pollutants and worsen odor. El Niño does not cause pollution but can amplify its effects by limiting natural dilution.

The Binalbagan River situation is not a single event but a layered problem involving industrial operations, environmental conditions, and a community that has been waiting for answers for years. The molasses spill in April 2025 brought the issue into sharper focus, but the underlying concerns about water quality and accountability remain unresolved. For residents, the next meaningful step is the release of the water test results from the EMB, which will determine whether the river is safe and who may be held responsible. If this was useful, you might also want to read how Philippine pollution policies are enforced.

Sources

Philippines plastic pollution: a national emergency — Explores how plastic waste compounds water pollution issues across the country.

The plastic sea: marine pollution in the Philippines — Examines the broader impact of pollution on marine ecosystems and coastal communities.

Negros Occidental townsfolk alarmed by Binalbagan River stench, seek probe. Rappler, 2025.

Molasses spill hits 4 Negros Occidental villages. Manila Bulletin, 2025.

Share this

Thim

Just a regular Filipino who started sharing stories, tips, and insights—now it’s grown into something bigger. RichestPH is my way of giving back by creating free content that helps fellow Pinoys make better choices around money, health, and lifestyle. No fluff, just honest content to help you live smarter and feel more in control.

Disclaimer

The content on RichestPH.com is for educational purposes only and should not be considered financial, investment, legal, or professional advice. We are not liable for any decisions made based on our content. Always conduct your own research and consult professionals before making financial or business decisions.

On Trend

Top Stories

Pollution Hurts Filipino Coral Reefs With Sediment
General Challenges

Pollution Hurts Filipino Coral Reefs With Sediment

The Philippines holds nearly a tenth of the world’s coral reefs, yet a combination of land-based pollution sources is steadily degrading these ecosystems in ways that are often invisible from the surface. While climate change remains the dominant long-term threat to coral survival globally, local

Read More »
Filipino Cities Are Getting Hotter From Pollution
General Challenges

Filipino Cities Are Getting Hotter From Pollution

In 2024, the Philippines recorded its warmest year since records began in 1951, and the heat is not distributed evenly. Urban centres, particularly Metro Manila, are bearing the brunt of this warming, a trend driven by a combination of global climate change and localised pollution.

Read More »
Environmental Pollution’s Effects on Filipino Culture
General Challenges

Cebu Plastic Pollution vs. PH

By 2025, Cebu is projected to generate more solid waste than any other province in the Philippines — an estimated 1.19 million tons annually. That figure places the province at the centre of a waste crisis that has been decades in the making, one that

Read More »
PH dismisses China’s claims of environmental harm at Ayungin Shoal.
General Challenges

Quarry Dust Pollutes Filipino Waterways

Quarry operations along the Buayan River System in General Santos City have introduced significant environmental pressures, with dust and altered water quality emerging as primary concerns for nearby communities. A study examining 14 commercial sand and gravel quarries in the area found that these operations

Read More »