A wastewater overflow is when wastewater flows out from the pipes or manholes from where it is usually contained into a stream, river or the sea. This is not normal and preventing this from occurring is a high priority for the Council.
Wastewater overflow details are listed below. Information will be updated as soon as possible, and once discharge has ceased.
Pollution may take up to two days to completely clear after the discharge has ceased.
|Discharge began||Discharge ceased||Overflow location||Waterway affected||Cause|
|6 April 9.30am||6 April 12.05pm||118 Rue Jolie, Akaroa||Akaroa Harbour|
|13 February 6.35am||13 February 7.15am||Corner of Eastern Terrace and Sandwich Road||Heathcote River||High rainfall|
|13 February 2.20pm||13 February 2.25pm||Corner of Eastern Terrace and Tennyson Street||Heathcote River||High rainfall|
|13 February 2.30pm||13 February 2.35pm||Corner of Anzac Drive and Carisbrook Street||Avon River||High rainfall|
|12 February 7.00pm||13 February 8.30pm||Dudley Creek Diversion at Rutland Reserve||Avon River||High rainfall|
|13 February 12.35am||13 February 9.25pm||Linwood Canal at the corner of Linwood Avenue and Hargood Street||Estuary||High rainfall|
|12 February 10.15pm||13 February 4.45pm||Tay Street Drain at the corner of Thames Street and Malvern Street||Avon River||High rainfall|
|12 February 9.40pm||13 February 10.40pm||Carton Mill Corner||Avon River||High rainfall|
|28 February 4.07pm||28 February 5.00pm||Taylors Mistake Beach||Pegasus Bay||Damaged pipe|
|4 January 4.00pm||4 January 5.40pm||5 Jetty Road, Governors Bay||Lyttelton Harbour||Blocked sewer|
|Overflow location||Waterway affected||Possible cause|
|Lyttelton Wastewater Treatment Plant Outfall||Lyttelton Harbour||
Intermittent overloading of the reticulation during rainfall. Possible cause is cross-connection between stormwater and wastewater. A project is ongoing to reduce inflow and infiltration in the Lyttelton reticulation.
All overflow incidents will be recorded in the table above.