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Readily available, cost effective and easy to catch and store, rainwater provides water for many uses around the home. 

What do you need to know?

Rainwater is widely used in New Zealand for use around the home from simply watering the garden or flushing the toilet, right through to the entire households needs. Find out what is required to treat rainwater for your household needs here.

Water Testing & Why?

Water testing helps determine initial treatment requirements and can also confirm your current treatment solution is working. Water should be tested annually. Simple test kits are available from your local FILTEC partner.

Water Catchment Design

A few simple things should be considered to ensure the rainwater arriving in you tank is as clean as possible, as this improves overall water quality as well as reducing ongoing maintenance and associated costs.

Rainwater Treatment

Most rainwater can be treated in the following way:

Step 1: Filtration to remove sediment.

Step 2: Disinfection to ensure illness causing pathogens (viruses, bacteria & protozoa) are treated.

Advanced Rainwater Treatment

Optional advanced water treatment solutions can address taste and odour problems and also neutralise water to stop corrosion in plumbing and tapware.

Service & Maintenance

Regular service and occasional maintenance is required to ensure your system is operating to protect you. Let a FILTEC partner schedule regular service and maintenance or purchase consumables and spares for a DIY option.

Common Rainwater Treatment Solutions

Here are our most common solutions when using rainwater around your house.

Rainwater Treatment - Potable

If you’re using Rainwater for all your household needs the New Zealand Ministry of Health recommends disinfecting water prior to use. FILTEC supplies class leading UV disinfection systems in a range of sizes to suit your home.

Rainwater Harvesting - Non Potable

The use of rainwater for tasks other than drinking is classified as rainwater harvesting. Save money by watering your garden, cleaning your car, washing your clothes and flushing your toilets with rainwater. A simple filtration simple is all you need to keep your rainwater harvesting system running.

Advanced Rainwater Treatment

Rainwater can have a naturally low pH value making it acidic. Acidic water can leach unwanted minerals from plumbing fixtures and and pipework affecting the quality and safety of your water. FILTEC supplies a simple solution to neutralise your rainwater.

Find your local FILTEC partner

FILTEC has a Partner Network working across the country in community. Experts in installation with years of experience helping locals with their water needs. Our Partners can recommend install and service FILTEC solutions, as well as supply a wide range of spares and accessories.


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