Do Downpipes Really Have To Be Connected To Stormwater?

As a homeowner, it's your responsibility to look after your stormwater runoff. But do downpipes have to be connected to stormwater drains directly? 

#downpipes #stormwater #stormwaterpipe #stormwaterdrainage #stormwaterpipe

https://drainmastersplumbing.com.au/plumbing-blog/connecting-downpipes-to-stormwater/