Understanding stormwater drainage for Sydney homes.
Stormwater and sewer are completely separate systems.
Stormwater takes rainwater directly to waterways without treatment.
Common problems: blocked downpipe connections, broken or collapsed pipes, inadequate drainage, surface water pooling, agricultural drain failure.
Signs include water pooling around foundations, damp smells, erosion channels, gurgling downpipes.
Solutions: pit and pipe drainage $1,500-$5,000, channel drains $100-$200 per metre, French drains $80-$150 per metre, rainwater tanks.
Council regulations cover discharge requirements and on-site detention..