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8 Practical Ways to Use Rainwater and Cut Your Water Bill

8 Practical Ways to Use Rainwater and Cut Your Water Bill

What can you do with collected rainwater? As a seasoned gardener's tip-sharing friend taught me, it's a free, eco-friendly resource perfect for gardens, homes, and everyday tasks.

Don't let this precious commodity go to waste. Here are 8 proven uses for rainwater to lower your water bills. Watch how:

8 Practical Ways to Use Rainwater and Cut Your Water Bill Contents
  • 1. Water the vegetable garden for free
  • 2. Wash the terrace
  • 3. Wash the car for free
  • 4. Clean the toilets
  • 5. Fill the toilet tank for free
  • 6. Clean the floors
  • 7. Feed outdoor ponds
  • 8. Fill animal water troughs for free
  • How to collect rainwater easily?
  • What does the law say?
  • Can rainwater be made drinkable?

Important note: Rainwater isn't potable. In some areas, it may contain pollutants, so its use is regulated for safety.

1. Water the vegetable garden for free

8 Practical Ways to Use Rainwater and Cut Your Water Bill

The most popular use: Collect rainwater via gutters to irrigate home-grown fruits, veggies, flowers, potted plants, or orchard trees. It's often purer than tap water, saving gallons—especially for larger gardens.

2. Wash the terrace

8 Practical Ways to Use Rainwater and Cut Your Water Bill

Skip wasting potable water on patios or balconies. Fill a basin from your collector and scrub slabs for free. Use it in a high-pressure sprayer too, and rinse garden tools while you're at it.

3. Wash the car for free

8 Practical Ways to Use Rainwater and Cut Your Water Bill

Perfect for car washing without guzzling drinking water. Wet, scrub, and rinse the bodywork—simple and effective.

4. Clean the toilets

8 Practical Ways to Use Rainwater and Cut Your Water Bill

For indoor or outdoor toilets, rainwater is ideal: pure, free, and demineralized to prevent limescale and stains.

5. Fill the toilet tank for free

8 Practical Ways to Use Rainwater and Cut Your Water Bill

Connect your tank to the collector or use a bucket post-flush. It's a smart way to conserve water worldwide.

6. Clean the floors

8 Practical Ways to Use Rainwater and Cut Your Water Bill

Scoop rainwater into a basin (warm it if needed) and mop floors with your regular cleaner.

7. Feed outdoor ponds

8 Practical Ways to Use Rainwater and Cut Your Water Bill

Safe for fish, amphibians, and plants in garden ponds or wash houses. Avoid unfiltered aquariums. For pools, treat to balance pH first.

8. Fill water troughs for free

8 Practical Ways to Use Rainwater and Cut Your Water Bill

Chickens, goats, horses, pets—connect troughs to your collector. Monitor for bacteria to keep animals healthy and bills low.

How to collect rainwater easily?

8 Practical Ways to Use Rainwater and Cut Your Water Bill

Regulated but straightforward: Size tanks appropriately (e.g., 300L for flushes). Place on stable, shaded ground. Connect to roof gutters (steeper roofs yield more). Cover to block debris and insects.

What does the law say?

8 Practical Ways to Use Rainwater and Cut Your Water Bill

If linked to public sewers, declare to your town hall. Annual maintenance: disinfect tank, clean filters.

Can rainwater be made drinkable?

In France, treat it for drinking, showering, or dishes: Stabilize pH, add reverse osmosis with carbon filters and pump.