Keep Your Rainwater System Working at Its Best
Collecting and storing rainwater is a smart, sustainable way to manage your water supply — but like any system, it needs regular maintenance to stay safe and efficient. Over time, gutters, filters, and collection lines can become blocked or contaminated, allowing debris and bacteria to enter your tank.
At Pure Water Systems NZ, we provide complete Rainwater Harvesting System Servicing — from roof to tank — ensuring every part of your system is working efficiently and delivering clean, healthy water for your home, farm, or business.
Why Regular Servicing Matters
- Keeps rainwater collection efficient during heavy rainfall.
- Prevents contamination from leaves, animal waste, and debris.
- Protects your water quality and tank hygiene.
- Reduces maintenance costs and equipment wear.
- Ensures safe, reliable water for drinking, irrigation, or livestock.
Our Servicing Process
System Inspection
We inspect your roof catchment, gutters, leaf guards, first flush diverters, filters, and downpipes for blockages, wear, or damage.
Cleaning & Clearing
We remove organic build-up, debris, and blockages from collection points to restore full system flow.
Filter & Diverter Maintenance
Filters and first flush diverters are checked, cleaned, or replaced as required to ensure contaminants don’t enter the tank.
Tank & Connection Check
We inspect tank inlets, screens, and fittings to confirm they’re secure, sealed, and free from damage.
Performance Review & Report
After servicing, we provide a report detailing the system’s condition, any repairs needed, and recommendations for future maintenance.
The Result
A clean, efficient rainwater collection system that captures the maximum amount of clean water, keeps your tank healthy, and delivers pure, safe water to your property year-round.
Are You Ready to Embrace a Higher Disinfection Standard?
FAQs
Got Questions?
We get it! Looking after your water tank isn’t something most people think about until there’s a problem.
Here’s a quick rundown of the most common questions we’re asked about cleaning, testing, and maintenance.
If you can’t find what you’re after, just give us a call on 0800 79 74 76 or send a message using our contact form, we’re happy to help.
What is rainwater harvesting?
Is rainwater safe to use within your home?
Absolutely. Domestic rainwater harvesting systems filter the collected rainwater very heavily, and water is stored below ground where it stays at a constant, cool, temperature and away from light.
This means it is practically impossible for any bacterial action to occur.
Collected Rainwater stays perfectly clean, clear, and odourless in any properly installed and maintained system.
What can you use rainwater for?
Rainwater can be used for all outdoor uses. Watering the garden, washing cars, cleaning patios, drives and windows, topping up swimming pools, ornamental ponds and hot tubs.
With some plumbing alterations, it can also be used inside the house to flush toilets and feed washing machines. Besides saving on potable mains water, rainwater use encourages less build-up of calcium deposits in appliances.
The diversion of rainwater to the storage tank can in many situations reduce the risk of flooding.
The principle uses for rainwater are:
• Toilets (around 35% water use)
• Washing Machines (around 15% water use)
• Garden/Outside Use (around 5%, yet this figure can grow greatly for keen gardeners)
Will I save on my water bill if I have rainwater harvesting?
Yes! Typically, you will save around 50% on your incoming metered water. If you are a keen gardener or have large water requirements, the savings can be even higher.
Depending on where you are in the country, some annual water bills are now averaging over $2,000 per year
How does rainwater harvesting help prevent in flooding?
Rainwater harvesting acts as part of a Sustainable Urban Drainage System (SUDS.) In heavy rainfall the tank fills first, then should the rainfall continue, the tank will overflow into a soak-away. This takes stress off public storm drains.