There are two key requirements for how you manage stormwater as part of your development or building project in the Sydney drinking water catchment: All new homes in NSW must meet BASIX, the Building Sustainability Index, which requires new homes to be water and energy efficient. Problems with water runoff from our neighbour. ... was no law that made them do it. ... Boral retaining blocks with a sump leading to the stormwater gutters can be a ... This section is designed to help our audience navigate stormwater regulations in Pennsylvania, understand state and federal water laws, and provide information regarding regulatory agencies and legislative resources. Explore the sections below to learn more on these topics. personal information to Council it is used in accordance with privacy laws applicable to Council. Your personal information will only be used for purposes related to the business of Council. E C T I O N 6 8 KEMPSEY SHIRE COUNCIL Civic Centre, 22 Tozer Street, Kempsey 2440 PO Box 3078, West Kempsey NSW 2440 Phone: (02) 6566 3200 Fax (02) 6566 3205 Is such an arrangement common in NSW? Think about large townhouse developments, probably large (> 100mm) stormwater lines, I'm guessing based on the scale of the development, maybe 250 townhouses. Sorry to be so vague, I don't go around counting my sister-in-law's nearest neighbours!