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Drainage Bylaw

The purpose is to:

Manage, regulate and protect from misuse or damage the public wastewater and stormwater systems defined as the Public Drainage Network High Sewer Flows.

What are the perceived problems in our district?

High flows to sewage treatment plants during heavy rain due to rainwater being diverted to the sewage system on private property.

High base flow in sewers due to groundwater infiltration through broken pipes on private property.

Sewer blockages due to:

  • rags or other foreign materials being flushed down drainage;
  • congealed fat from oils discharged from sewer system

Corrosion of sewers or manholes due to seawater, septic tank waste or trade waste discharges.

Wastewater containing volatile or toxic substances that affect the health of sewer and treatment plant operators or upset the biological balance of the wastewater treatment process (for example from the disposal of petrol or turpentine used for cleaning).

Structures built on top of reticulated services or on access tracks and easements that limit access to services to effect repairs.

Damage to reticulated services from contractors excavating or drilling in close proximity to services.

Tree roots in drainage contributing to blockages.

Wastewater discharge or overflowing to stormwater systems, including trade waste such as paints (that upset the ecology of the stormwater system and mean that contaminated water is discharged to streams and rivers).

Runoff from:

  • building sites and other earth-worked areas, containing high levels of silt, discharged to stormwater systems.
  • stockyards or other animal pens discharge to stormwater systems contributing to high nutrient and faecal levels in rivers and streams.
  • Vehicle wash-down areas discharged to stormwater systems (silts, detergents and oils washed into drains and ending up in streams and rivers.

The proposed Bylaw provisions are to…

  • To control connections to the drainage system
  • To prevent and remove blockages to the drainage system
  • Control corrosive, volatile or toxic chemical disposal
  • Prevent and manage damage to services
  • Ensure no new structures are built over public sewers
  • Secure and monitor all wastewater and pumping facilities to prevent unauthorised access
  • Control contaminated discharges or overflows to stormwater system

For the full wording of the proposed Drainage Bylaw 2015 click here (575KB pdf).

Feedback closed on 30 October 2015