The proposed water tariff adjustment in Negeri Sembilan is expected to boost the state’s water supply system, ensuring long-term sustainability, said Syarikat Air Negeri Sembilan Sdn Bhd (Sains).

In a statement, Sains said the new tariff structure will affect all customer categories, covering more than 490,000 accounts.

However, domestic users consuming less than 20 cubic metres per month...