Flood-Affected Tanks – Will I Need a Tank Clean?
Recent significant weather events in Auckland have caused widespread flooding across the region, particularly in Rodney and North Auckland, leaving many property owners wondering: will I need my water tank cleaned after flooding?
In ground water tanks are particularly at risk during floods and flooding can seriously compromise your water quality. Tank Cleaning enquiries often increase after flood events, due to ground water entering the in-ground tank through the lid or feeder points, and contaminating water supplies.
How Flooding Affects Water Tanks
Flooding introduces contaminants that are not normally present in a healthy rainwater system. This is especially true for in-ground tanks, which are far more vulnerable to groundwater intrusion.
During floods, tanks can be affected by:
Groundwater seeping into tanks through lids, seams, or vents
Sediment, silt, and mud entering the water supply
Bacteria, pathogens, and chemical contaminants
Organic matter such as leaves, debris, or sewage runoff
Once floodwater enters a tank, it is inadvisable to continue drinking it.
Signs Your Tank Needs Cleaning After a Flood
If you notice any of the following, our “Full Clean” tank cleaning option is recommended.
Cloudy or murky water
Unusual taste or smell
Reduced water pressure
Floodwater reaching or submerging your tank
Have a look inside your tank. If it looks dirty or contaminated, book us in for a tank clean!
Why a Full Tank Clean Is the Best Solution
After flooding, partial cleaning or flushing is often not enough. The safest and most effective option is a full professional water tank clean, followed by refilling with fresh water.
A proper flood-related tank clean includes:
Complete draining of the tank
Removal of sludge, sediment, and contaminants
Cleaning the inside floor and walls
Inspection of tank integrity and fittings
Refilling with clean, fresh water
Water deliveries normally cost around $300 for 10,000L of water. With our fixed prices, we can give you a fast and accurate quote for insurance purposes if required.
In-Ground Tanks Are at Higher Risk
In-ground tanks are particularly susceptible because:
Floodwater can enter from surrounding saturated soil
Tank lids and seals may not be fully watertight
If you have an in-ground water tank and your property experienced flooding, we strongly recommend you check your water supply and consider a professional water tank cleaning.
Making a Flood-Related Insurance Claim
If your tank was affected by flooding, it’s a good idea to contact your insurer.
Tips for insurance claims:
Take photos of floodwater levels and tank surroundings
Document any visible contamination or water discolouration
Contact us for a quote and/or send them our invoice
Many insurers require evidence that a professional clean was necessary to restore safe water quality.
Don’t Take Risks With Flood-Affected Water
If your tank water looks cloudy, murky, or was exposed to floodwater, it will need a full clean. Flood contamination isn’t something that clears up on its own — and using unsafe water can pose serious health risks.
Contact Northern Tank Cleaning today to discuss flood-affected tank cleaning and restore confidence in your water supply.
