As spring sets in across New Zealand, it’s the perfect time to make the most of nature’s free resource - rainwater. Whether you're looking to reduce your water bills, live more sustainably, or simply keep your garden green, collecting rainwater is a smart and eco-friendly move.
With increasing pressure on town water supplies and unpredictable weather patterns, collecting rainwater isn't just smart - it's essential
Here’s how to get started:
Why collect rainwater?
-
Save money on water usage
Whether you're on town supply or rural tank water, using rainwater for gardens, toilets, or laundry can significantly reduce your water bill. For rural homes, an extra water storage tank can reduce the need of carting water in, saving you even more. -
Reduce demand on mains supply
Northland's aging infrastructure has struggled to keep up. Earlier this year (2025), a major supply line failure left an entire town without water for over 24 hours - highlighting the need for reliable backup systems. -
Support your garden during dry spells
Northland is no stranger to droughts. Rainwater collection helps keep your garden green and thriving, even when restrictions are in place. -
Emergency backup for water outages
Having a tank on-site means you're prepared for boil water notices, outages, or supply disruptions - especially important for families, landlords and rural properties. -
Boost property value
Homes with rainwater systems are seen as more sustainable and self-sufficient. A well-installed tank and filtration setup can add appeal and value to your property.
What you’ll need
- Roof catchment area – Most homes already have this!
- Gutters and downpipes – Ensure they’re clean and in good condition.
- First flush diverter – Helps remove debris and contaminants from the first rainfall.
- Water tank – Choose a size that suits your space and needs (slimline tanks are great for urban homes).
- Pump and filter system – Optional, but useful if you plan to use the water indoors or for irrigation.
Local cost comparison
For rural homes in Northland:
- Water carting can cost between $250-$400 per tank fill, depending on location and provider.
- A typical household may need 3-5 fills per year, especially during the dry seasons.
- That's $750-$2,000 annually - money you could be saving by collecting FREE rainwater.
Installation tips
- Position your tank on a level, stable base - a clean flat concrete pad or compacted gravel work well - but a level sand base is preferable with plastic tanks.
- Install a leaf guard or mesh screen to keep out debris.
- Consider a UV filter or water treatment system if using rainwater for drinking or household use.
- Make sure your system complies with local council regulations - we can help with that!
Maintenance matters
- Clean gutters regularly.
- Check for leaks or blockages in pipes and diverters.
- Inspect your tank for sediment build-up and clean it annually if needed.
Need help getting set up?
At Plumbing & Heating Centre, we supply and install water tanks, pumps, and filtration systems tailored to your home. Whether you're starting from scratch or upgrading an existing setup, our team is here to help.
“The comfort of your home is our specialty.”
📞 Contact us today to book a consultation or get a quote.
