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Hygrade Water New Zealand
102 Neilson St
2013 Onehunga, Auckland / New Zealand
0800 494 723
sales@hygradewater.co.nz

drainage

Drainage refers to the deliberate conduction of water using man-made devices. A distinction is made between open drainage (e.g. gutters, drainage channels) and closed drainage (e.g. rainwater downpipes).

                                         
 
 
 

Hygrade Water New Zealand
102 Neilson St
2013 Onehunga, Auckland / New Zealand
0800 494 723
sales@hygradewater.co.nz

 

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