Pump Outs for Septic & HSTP Systems
Regular pump outs are an essential part of maintaining both septic systems and Home Sewage Treatment Plants (HSTPs). While many people understand that septic tanks require pumping, there’s often a misconception that HSTP systems never need it — which isn’t the case.
How Often Does an HSTP Need Pumping?
Unlike septic tanks, HSTP systems typically require pump outs less frequently — usually every 7 to 10 years, depending on usage and system performance. As part of our regular servicing, we monitor your system and will let you know when a pump out is required, so it never becomes a problem.
Why Proper Pump Outs Matter
A pump out isn’t just about removing waste — it’s a critical part of maintaining the health and longevity of your system.
If pump outs are delayed or not carried out correctly, it can lead to:
- Reduced system performance
- Increased wear on components
- Potential system damage
- Costly repairs down the track
Done the Right Way — Every Time
At Maxfield’s Wastewater, we take a hands-on approach to every pump out.
We don’t just organise the job — we ensure it’s done properly by having one of our experienced technicians on-site during the process.
This allows us to:
- Prevent damage to internal components during pump out
- Inspect the system while the tank is empty (a rare opportunity)
- Check airlines and critical system components
- Identify any potential issues early
Safe & Efficient Tank Refilling
Once the system is pumped out, it must be refilled correctly to avoid structural issues.
We organise a water carrier to refill the tank quickly and efficiently, which:
- Avoids excessive use of your town water supply
- Reduces water costs for the homeowner
- Prevents the risk of the tank lifting or “popping” out of the ground
- Ensures the system is returned to operation safely
A Complete, Managed Service
We take care of the entire process for you, including:
- Organising the pump-out contractor
- Coordinating the water carrier
- Providing a technician on-site to oversee the work
- Completing a full system inspection during the process
This ensures everything is done thoroughly, professionally, and without hassle.
Frequently Asked Questions
Pump Outs
Yes. While HSTP systems require pump outs less often than septic tanks, they still need to be emptied periodically to remove built-up solids and maintain proper performance.
On average, most HSTP systems require a pump out every 7–10 years, depending on usage and how well the system has been maintained. We monitor this during regular servicing and will let you know when it’s due.
Signs can include reduced system performance, sludge build-up, or poor water quality. However, the best way is through regular servicing, where we can accurately assess when a pump out is required.
The tank is emptied by a vacuum tanker, removing accumulated solids. During this process, we have a technician on-site to oversee the work and inspect the system internally while it is empty. Click here for more information.
Having a technician present ensures the job is done correctly and safely. It helps prevent damage to internal components and allows us to carry out a detailed inspection that isn’t possible when the tank is full.
After a pump out, the tank must be refilled to maintain structural stability and proper operation. Leaving it empty can lead to damage or the tank lifting out of the ground.
No. We organise a water carrier to refill the tank quickly and efficiently. This avoids high water bills and ensures the tank is filled safely without putting pressure on your home’s water supply.
Delaying a pump out can lead to reduced system performance, increased wear on components, and potentially costly repairs. Regular maintenance helps avoid these issues.
Yes. We manage the entire process for you — including organising the pump-out contractor, water carrier, and having a technician on-site to oversee everything.
Costs can vary depending on system size and site access. We provide clear, upfront quotes when a pump out is required.
Absolutely. As part of our servicing, we keep track of your system’s condition and will advise you when a pump out is needed — so you don’t have to guess.
Yes, but we recommend having it managed professionally to ensure it’s done correctly. We’re happy to organise the entire process and oversee it for you.