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The National Water Resources Board is keeping an eye on potential water sources amid possible increased demand due to the threat of the novel coronavirus.

NWRB executive director Sevillo David Jr. said the agency is expecting an increase in water usage as hand hygiene is one of the safety precautions to avoid contracting the virus.

"Titignan po natin kung paano tayo makakatulong. Gusto rin nating pangalagaan 'yong lebel [ng tubig], karampatang supply na maaari pa nating maipamigay sa mga susunod na buwan partikular ngayong summer," he told radio DZMM.

"At sa mga kababayan po natin, ipaalala po natin na gamitin nang tama at huwag aksayahin ang tubig lalo na sa panahon ng COVID-19 ay mahalaga ang tubig."

The World Health Organization earlier said frequent hand-washing is a more effective way to avoid contracting the new coronavirus.

• WHO to public: Hand hygiene better than face masks in guard vs new coronavirus

The NWRB is looking at different scenarios and coordinating with water concessionaires on possible increase in demand due to the coronavirus crisis.

Cloudseeding, tapping rivers, fresh water sources as well as Manila Bay are some of the potential alternative water sources for Metro Manila, David said.

He said water level at Angat Dam is currently at 200 meters, which is enough to last for the entire summer.

"Normal [ang panahon] ayon sa PAG-ASA at inaasahan po nating hindi mauulit 'yong nangyari [water shortage] noong nakaraang taon,” he said.