If your water bill has felt heavier lately, you're not imagining it. Sydney Water customers saw bills jump $168 this year alone, a 13.8% hike, and that's just the start. Over the next five years, bills will rise another $77 annually on average, plus inflation. Hunter Water is climbing $53 per year. Melbourne customers are bracing for price reviews too.
Now layer on top of that the climate forecast. The Bureau of Meteorology is warning Australia to prepare for El Niño conditions from April to June 2026 onwards. Translation: drier, hotter, with rainfall well below normal across most of the country. Water storage levels already sit at 66.3% of capacity, down 2.4% year on year, and key dams like Hume are sitting at just 24.9% of capacity.
The message is clear. Households that act now on water savings will cushion themselves against rising prices and potential restrictions. Those that wait will face either tighter rationing or steeper bills, possibly both.
What your garden can do right now
Start with the easiest win. Replace water-hungry lawn and ornamental plants with native, drought-resistant species suited to your region. Native plants typically thrive on whatever rainfall you get, ask less of you come summer, and often look better doing it. Ask your local council which species perform best in your area; most councils have free guides online.
Mulch matters too. A thick layer (5-10cm) of good mulch over garden beds cuts evaporation sharply, meaning less water lost to the heat and less you need to apply by hand. Plus it suppresses weeds and improves soil as it breaks down.
Time your watering outside Stage 1 restrictions: before 10am or after 4pm. Early morning watering is best; it reduces overnight evaporation and gives plants hours to absorb water before heat of the day kicks in. Use a hand-held hose with a trigger nozzle, a sprinkler, or a drip system. Avoid running the sprinkler during the day; you're essentially paying to water the air.
Greywater: the easy upgrade with real returns
Greywater—the reusable water from showers, baths, sinks and washing machines—makes up just over half of household water waste. A basic greywater diverter system costs $600 to $3,000 and requires a plumber half a day to install. Full treatment systems (with filters and pumps) run $5,000 or more, but in drought-prone areas with high water costs, even a basic system pays for itself in five to ten years.
How much does it save? In Perth, households have cut mains water use by 30% with a simple greywater reuse unit alone. Combined with rainwater, savings exceed 50%. That translates to potentially 200,000 litres of savings per household per year—a real number when water bills are climbing by $168 annually.
One caveat: check your council's rules before installing. Some councils restrict greywater use to gardens only (not toilets), and some require approved systems with specific certification. Your local water authority's website will spell this out.
Rainwater tanks: the investment that decouples you
A properly sized rainwater tank can cut your mains water reliance dramatically. In some climates and with adequate roof catchment, tanks can reduce mains use by up to 100%. Even modest systems (5,000-10,000 litre tanks) give you breathing room during restrictions and cut your bill noticeably.
Costs vary. Above-ground plastic tanks are the cheapest per litre; underground tanks cost more upfront but save space and last longer. Expect $1,500-$4,000 for a mid-sized residential setup, installed. The payback depends on your rainfall, tank size and local water costs, but in dry regions you're looking at 5-10 year returns.
Better yet, many states offer rebates. Check your council or state water authority website for grant programs. Some areas subsidise rainwater tanks and greywater systems to ease the upfront cost.
Check your local restrictions now
Water restrictions aren't uniform across Australia. Sydney operates under one set of rules; regional NSW councils set their own. Victoria's rules differ again. You won't know what's banned in your area—car washing bans, garden watering windows, pool filling limits—until you look it up.
Search your local council's website for current water restrictions. If you're on tank water or in a rural area, check with your water provider directly. The Bureau of Meteorology maintains a national restrictions database, but it's easiest to start local. Know the rules now, before Stage 2 or Stage 3 restrictions kick in and penalties apply.
The household cost of doing nothing
A typical Australian household uses 174 kilolitres of mains water per year. At today's Sydney Water rates, that's roughly $800-900 in water and sewerage charges annually. By 2030, the same usage will cost you close to $1,100 in Sydney, or around $1,540 in Hunter region, without inflation added on top.
Even modest water reduction—say, cutting usage by 20% through native plants, mulch, and behavioural changes like shorter showers and fixing leaks—saves you $160-220 a year today. That difference grows as bills climb. Over five years, a household that reduces water use by 20% saves $1,200 or more compared to one that doesn't.
Install a greywater system or rainwater tank, and those savings accelerate. You're not just dodging price increases; you're building genuine resilience. When restrictions tighten and water becomes scarce, you'll have alternatives.
El Niño isn't guaranteed to bring catastrophic drought. But the forecast is clear, water prices are marching upward, and household budgets are already tight. Acting now on water means spending less later, and sleeping better when the next dry spell arrives.