MANILA - Manila Water Company Inc and Maynilad on Wednesday said they would contest the Supreme Court order imposing a fine of ₱921.5 million for violations of the country's clean water act.

Metro Pacific Investment Corp's unit Maynilad and the Ayala-led concessionaire Manila Water will file their respective Motion for Reconsideration by Oct. 2, the companies told the stock exchange.

"We would like to affirm that the Company will exercise all its legal options, including the filing of a Motion for Reconsideration by October 2, 2019," Manila Water said.

"Maynilad shall file a Motion for Reconsideration of the Decision with the Supreme Court on or before 2 October 2019," Metro Pacific said.

• SC fines Maynilad, Manila Water, MWSS for PH Clean Water Act violations

The Supreme Court in August held Manila Water, Maynilad and regulator Metropolitan Waterworks and Sewerage System (MWSS) "jointly and severally liable" for the violation of the Section 8 of the Philippine Clean Water Act.

The clause (Section 8) requires MWSS and water concessionaires to connect existing sewage lines found in all establishments to the available sewerage system.

The decision covered the period of May 7, 2009 to the date of promulgation on August 6, 2019.

Maynilad earlier said it would also file a similar appeal.