In most plumbing systems, wastewater needs gravity to flow toward drains. But for homes with basements that are positioned below the main sewer line, this isn’t always the case. Why? Simply, because gravity alone isn’t enough to push the excess water away. But that’s where a lift pump/station comes into play.  

In this blog, you’ll learn more about why a lift pump is crucial in certain properties. And, how a lift pump works to prevent water accumulation within your cellar or basement. 

What is a lift pump? 

A lift pump (also known as a sewage ejector pump) is an electrically-powered system designed to move water from low-lying areas up to a higher level. The pumped water is then either directed into a municipal sewer line or a septic tank. 

Most homeowners with basements require a lift pump when there is no gravity system in place. If there is no elevation within the pipes, a lift pump actively works to drain water away from the property safely.  

Lift pumps can often get confused with sump pumps. However, there are several key differences. Lift pumps are bulkier and built with grinders to break up sewage debris to prevent clogging. Once installed on-site, they’re labelled as ‘hazardous’ due to the fact that sewage can contain deadly substances.  

Explore how sump pumps work to understand how they are different from lift pumps.  

What does a lift pump do? 

A lift pump is equipped with a plunger, which works with two valves to control the water movement. As the plunger escalates, the bottom valve opens, but the top valve stays shut. This action forcefully pushes water into the chamber. 

When the plunger is forced downwards, the lower valve closes. Then, the upper valve opens, and the water above the plunger is forced out through the discharge spout. This cycle repeats, which in turn transports water to the outlet. 

Where will you find a lift station? 

A sump pump lift station is required when your drainage system sits below the main sewer line. Alternatively, it’s a common solution when pipework is ascending or installed horizontally.  

You’ll also find lift stations in homes with septic systems. Since septic tanks are usually installed near ground level, there isn’t always enough slope in the pipes to allow wastewater to flow naturally from the house. This is where a lift station helps pump wastewater to a higher point. 

While it’s possible to dig down and install gravity-based sewer pipes to achieve the same result, this solution is far more complex. It requires extensive excavation to maintain a consistent slope so that gravity carries the wastewater away. And in most cases, this costs significantly more than installing a simple lift pit sump pump. You’ll not only be saving huge amounts of time, but also money. 

How to choose the right lift pump for your home 

Here at Sumps & Pumps, we have the expertise to guide you on choosing the correct lift pump for your home. Check out our website for our full lift pump range, or get in touch today to speak to a member of the team. We’re also able to carry out an on-site inspection of your premises so we can identify the correct lift pump for your requirements.