Is your soak pit or sump pit no longer working properly?
If water is pooling around your property, stormwater drains are overflowing, or parts of your section stay wet long after rain, there’s a good chance your soak pit or sump pit isn’t working properly.
Many Hawke’s Bay homeowners are still dealing with stormwater issues linked to Cyclone Gabrielle and other heavy weather events. While surface flooding may disappear once the weather clears, silt and debris can settle underground and affect how well stormwater systems, soak pits, and sump pits work long after the flooding has gone.
If you’ve noticed flooding, soggy ground, or drains struggling in heavy rain, your soak pit or sump pit may no longer be working properly.
What’s the difference between a soak pit and a sump pit?
People often use these terms interchangeably, but they are slightly different.
A soak pit is designed to slowly disperse stormwater into the surrounding ground.
A sump pit collects stormwater and helps move it through your drainage system.
For most homeowners, the important thing is simple: if either system stops working properly, water has nowhere to go.
Sign 1: Water is pooling around your property
Are puddles hanging around after rain?
If water sits around your home, driveway or lawn for days after rain, your soak pit may no longer be draining properly.
This can happen when:
- silt blocks drainage pathways
- the pit becomes overloaded
- surrounding soil becomes compacted
- the system is damaged underground
In Hawke’s Bay, this is something we’re seeing more often following Cyclone Gabrielle and other flooding events, where fine silt has reduced drainage performance.
Sign 2: Your stormwater system overflows in heavy rain
Is water backing up during downpours?
A working soak pit should help manage stormwater during heavy rain.
If downpipes overflow, surface drains back up, or water starts collecting where it shouldn’t, it may be a sign the pit can no longer cope with the amount of water coming through.
Sometimes this points to a blockage. Other times, the system may simply be undersized for current conditions.
Sign 3: Parts of your section never seem to dry out
Is the ground always soggy?
Consistently wet areas can mean water isn’t dispersing underground as it should.
You may notice:
- boggy lawns
- soft ground underfoot
- wet patches near drains or retaining walls
- areas that stay damp even in dry weather
This can be caused by poor drainage, damaged pipes or a soak pit that has gradually filled with sediment.
Sign 4: You notice smells or stagnant water
Stormwater shouldn’t smell
A soak pit or sump pit should drain efficiently.
If water becomes stagnant, you may notice unpleasant smells or visible standing water around drains or collection points.
This can be a sign that water is sitting where it shouldn’t rather than moving through the system properly.
Sign 5: Stormwater problems keep coming back
Are you fixing the symptom, not the cause?
Stormwater problems rarely improve on their own. If the same issue keeps coming back, it is often a sign that the underlying cause has not yet been identified.
If you are repeatedly clearing drains, dealing with flooding or noticing the same wet areas returning after heavy rain, there is a good chance your soak pit or sump pit is no longer working as it should.
In some cases, what looks like a one-off blockage or isolated flooding issue can actually point to a soak pit that is blocked with silt, damaged, overloaded or no longer coping with the amount of water coming through the system.
Getting to the root cause of the problem early can help avoid bigger repairs and ongoing stormwater issues around your property.
Why soak pits fail in Hawke’s Bay
Stormwater systems can stop working for several reasons.
Common causes include:
- silt build-up from Cyclone Gabrielle or flooding
- blocked or damaged stormwater pipes
- tree root intrusion
- ageing infrastructure
- poor drainage soils in some areas
- systems that are no longer large enough for heavier rainfall
In Hawke’s Bay, extreme weather events have highlighted weaknesses in older stormwater systems that may have previously seemed fine.
Can a soak pit be repaired?
Depending on the issue, a soak pit may be able to be cleaned, repaired or upgraded. In other situations, replacement may be the best long-term option.
The right solution depends on what’s actually causing the problem. In some cases, the soak pit itself is the issue. In others, the real cause may sit elsewhere in the stormwater system.
When should you call a stormwater specialist?
If you’re seeing repeated flooding, persistent wet areas or stormwater problems after heavy rain, it’s worth getting things checked before the problem gets worse.
At East Coast Plumbing & Gas, we help homeowners across Hawke’s Bay identify what is actually causing the issue. That could mean a soak pit filled with silt after flooding, damaged drainage underground, or a system that is no longer coping with the amount of water coming through.
Getting the diagnosis right matters. The best solution is not always the biggest or most expensive one – it is the one that solves the problem properly and helps protect your property from future flooding.
If you are noticing signs that your soak pit or sump pit may not be working as it should, getting things checked early can help prevent bigger stormwater problems later.
Protecting your property starts with understanding the problem
Stormwater issues are not always straightforward. What looks like a blocked soak pit or one-off flooding issue can sometimes point to a bigger problem within the stormwater system.
At East Coast Plumbing & Gas, we help homeowners across Hawke’s Bay identify what is actually causing the issue. That could mean a soak pit filled with silt after flooding, damaged drainage underground, or a system that is no longer coping with the amount of water coming through.
Getting the diagnosis right matters. The best solution is not always the biggest or most expensive one — it is the one that solves the problem properly and helps protect your property from future flooding. Call our team today and we’ll be happy to visit your property and help you identify the problem.
Frequently asked questions about soak pits and sump pits
A soak pit may overflow when it can no longer drain stormwater fast enough. This can happen if the pit is blocked with silt or debris, damaged underground, overloaded during heavy rain or no longer suited to the amount of stormwater your property produces. In Hawke’s Bay, we are also seeing issues linked to Cyclone Gabrielle and other flooding events, where silt has reduced drainage performance over time.
Soak pits and sump pits should be checked periodically rather than left until problems appear, since silt, debris and sediment can build up gradually and reduce drainage performance over time. Regular checks are especially important in Hawke's Bay after heavy rain or flooding events, as silt from storms like Cyclone Gabrielle can settle underground and worsen drainage without any obvious surface signs.
A soak pit's lifespan depends on soil conditions, usage and maintenance rather than a fixed number of years, so there's no single answer for every Hawke's Bay property. Ageing infrastructure, poor-draining soils and silt build-up from flooding can all shorten how long a soak pit performs well, which is why regular checks help catch early signs of wear before a full replacement is needed.
Yes. Flooding can leave behind silt and debris that settles underground and affects how well stormwater systems work. While surface flooding may disappear quickly, stormwater problems linked to Cyclone Gabrielle may take months or even years to become noticeable.
Common signs of a blocked or failing soak pit include pooling water, flooding during heavy rain, bad smells, overflowing drains and areas of your property that stay wet for long periods. If the same stormwater problems keep coming back, it is often a sign the underlying issue has not been identified.
In many cases, yes. Depending on the cause of the problem, a soak pit or sump pit may be cleaned, repaired or upgraded. Sometimes the issue sits elsewhere in the stormwater system, which is why identifying the root cause is an important first step.
A soak pit or sump pit that smells bad usually means water is sitting stagnant instead of draining or flowing through the system as it should. Stormwater shouldn't smell, so a persistent odour often points to blocked or slow drainage, a build-up of silt and debris, or water that has nowhere to go. Getting the system checked can identify the cause before it worsens.
Yes, tree root intrusion is one of the recognised causes of soak pit and drainage failure, alongside silt build-up, damaged pipes, ageing infrastructure and poor-draining soils. Roots can crack or block underground pipes and pits over time, reducing how well stormwater disperses or drains away. If roots are suspected, a specialist can inspect the system and recommend whether repair, cleaning or replacement is the best fix.
A smelly, overflowing or constantly wet soak pit isn't usually an immediate emergency, but it shouldn't be ignored, since these are warning signs that drainage isn't working as it should. Left unchecked, minor issues like silt build-up or a small blockage can develop into bigger problems such as underground damage or more serious flooding. Getting it assessed early is generally quicker and simpler than waiting until it fails completely.
A soak pit that worked well for years can start failing as ageing infrastructure, soil compaction or a build-up of silt gradually reduce how well it disperses stormwater into the ground. Increased rainfall intensity, more hard surfaces on a property, or a system that's simply no longer sized for current stormwater volumes can also be behind sudden or worsening problems, especially following major flooding events.
