Moa Point restart delayed by a week

Wellington's troubled waste water treatment plant at Moa Point will not restart for another week as further checks on the ventilation system are needed.

Water entity Tiaki Wai said it aimed to reopen the plant on 17 November.

In February, the waste water treatment plant suffered a catastrophic failure during a storm.

RNZ viewed the inside of the plant last week for the first time since then.

Tiaki Wai said it found more testing of the plant's ventilation system was needed during final readiness checks.

"The ventilation system remains the key area requiring additional commissioning and testing before the plant can restart. We need to be fully satisfied that the system is operating as intended before restarting the plant."

It recognised the frustration the delay could cause but it remained on track to restart the plant by the end of November.

It said the ventilation system was key to ensuring safe working conditions inside the plant and manage bad smells.