What is the minimum discharge pipe size required from a sump or receiving tank for sewage pump systems?

The minimum discharge pipe size required from a sump or receiving tank for sewage pump systems is 2 inches. This standard is set to ensure that the sewage can be effectively and efficiently transported away from the receiving tank without causing blockages or excessive backpressure. A 2-inch pipe provides a suitable diameter for the flow of typical sewage solids and liquid mixture, allowing for a reliable and consistent discharge. Choosing a pipe size that is too small could result in inadequate pump performance and increased wear on the system, potentially leading to failures or backups.

While larger pipe sizes could theoretically also work for sewage discharge, they may not be necessary for standard applications and can add unnecessary cost and complexity to the installation. In contrast, smaller pipe sizes could compromise the system's ability to handle sewage effectively, which is why the 2-inch standard is generally adopted in the industry for most residential and moderate commercial installations.