Renovations to existing dwellings or adding an additional residential unit (ARU) may reduce the performance level of the sewage system in the following situations:
- the number of bedrooms in the dwelling are increased
- the proposed construction exceeds 15 percent of the gross area of the dwelling unit
- new plumbing fixtures are added to the dwelling, or
- if the addition or ARU, expansion, alteration or change proposed encroaches upon the sewage system or any of its components, or area required for future replacement
If any of the above applies and the results show that the daily design sewage flow of the dwelling exceeds the capacity of the sewage system components, then the system must be upgraded to accommodate the increased flow rate.
Other structures, including garages (attached or detached), swimming pools or buildings that may reduce the performance level due to their proximity to the sewage system, are also included in the requirements for an application if they are within a 15 metre distance.
Applicants who propose the foregoing must apply for a Sewage System Maintenance Inspection to the Township for approval prior to applying for the municipal building permit. The fee is found here.