Manila Bay rehabilitation

Cimatu counters DOH: Dolomite in Manila Bay not harmful to health

Ralf Rivas
Cimatu counters DOH: Dolomite in Manila Bay not harmful to health
Environment Secretary Roy Cimatu also defends the agency's decision to create an artificial beach amid the pandemic

Environment Secretary Roy Cimatu refuted claims by experts that dolomite dumped in Manila Bay will cause respiratory illnesses. 

During the House deliberations of the Department of Environment and Natural Resources’ (DENR) budget on Tuesday, September 8, Cimatu said that the dolomite used is 3 times bigger than regular sand and won’t go up in the air. (READ: FAST FACTS: What is dolomite sand, and how will it affect Manila Bay?)

“There is indeed a harmful effect. If you crush dolomite in a mining area without protective wear for your nose, it will be harmful because of the small dust particles and silica, which is a component of dolomite. But this is not a concern here because the dolomite used is bigger and it is only during mining,” Cimatu said in a mix of English and Filipino.

The Department of Health said on Monday, September 7, that dolomite could pose health risks.

“Ang [The] dolomite is a form of a rock. Mayroon pong sinsasabi sa mga pag- aaral ay kapag na-inhale po ito ng mga tao ay may mga adverse reactions, respiratory mainly (There are studies that say this can have adverse reactions mainly on respiratory when inhaled),” Health Undersecretary Maria Rosario Vergeire said.

Aside from respiratory problems, Vergeire said that dolomite sand could cause eye irritation and discomfort in the gastrointestinal system.

Cimatu on Tuesday added that dolomite will clean Manila Bay’s waters.

“Dolomite will clean the water from acidic to alkaline,” Cimatu said. He also noted that dolomite is used in aquariums.

Moreover, Cimatu added that dolomite is already used in several resorts in Cebu.

He also said that there will be pipes installed to prevent sand from being washed away from the artificial beach area.

Environment Undersecretary Jonas Leones backed up the project as well, emphasizing that the use of artificial sediment and “beach nourishment” have been done in other countries.

Murky plans

While the DENR has aired their side on why it opted to create an artificial beach in Manila Bay amid the coronavirus pandemic, it is important to note that they never provided its detailed plans to the public.

Media has repeatedly asked DENR for its plans since it launched the program in January 2019. 

Instead, the DENR gave only a short email, which stated that the efforts will be done in 3 phases. The email was only 2 pages long.

Rappler also reviewed media interviews by Cimatu. He never mentioned creating an artificial beach last year. (READ: Manila Bay cleanup: High hopes, murky plans)

Environmentalists, fisherfolk, and church groups pushed Tuesday, September 8, for a petition to stop the dumping of crushed dolomite along the Manila Baywalk. 

“It must be stopped as it has not undergone an environmental impact assessment nor a consultative and participatory process in both Manila Bay and Cebu,” the petition read. –

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Ralf Rivas

A sociologist by heart, a journalist by profession. Ralf is Rappler's business reporter, covering macroeconomy, government finance, companies, and agriculture.