Sewage treatment plant defective. No evidence of sludge return through visual indicator pipes. Aeration compartment empty.
Links[1] https://www.amsa.gov.au/file/6121/download?token=CUT_bf-Q [2] https://www.amsa.gov.au/file/6122/download?token=SjP6y9iX [3] https://www.amsa.gov.au/file/6123/download?token=TSPWLz2u