No.
Whenever stormwater runoff exceeds the drainage capacity of the stormwater network, ponding and/or overland flow is expected. It would be extremely expensive to provide a drainage network that avoids all ponding and overland flow. The Council first set design levels of service for the stormwater network in Hamilton in the 1980s but has since amended them. As at 2018, different design levels of service applied to existing and new development. Within existing development, Council plans to maintain the following levels of service for the stormwater system: 2-year event for residential, 5-year event for commercial, and 10-year event for industrial (page 123 of the 2021-2051 Infrastructure Strategy). However, the Regional Infrastructure Technical Specifications (the RITS) requires all new primary stormwater systems (primary stormwater systems may include (but are not limited to) wetlands, ponds, lakes, rain gardens, swales and filters, pipelines, inlet/outlet structures and soakage areas (RITS, updated May 2018, p.15) to be designed for the 10-year rainfall event for residential, industrial and commercial areas.