How To Collect, Filter and Store Rainwater

Catching and storing rainwater is often more complicated than channeling the rainwater through a slanted surface into a storage tank via gutters.

If your goal is to have the water useable for a long time, additional considerations would be needed.

Firstly, you would want to find out if catching rainwater is legal in your area. Numerous bureaucratic bottlenecks could disallow rainwater collecting systems.

Below is a video that gives a quick overview of how to catch, filter, and store rainwater;

Below are numerous frequently asked questions about catching, filtering, and storing rainwater;

How do you filter rainwater?

To remove the smell and the taste of chlorine in the drinking water, you can use an activated carbon filter or charcoal filter. This system is made of coconut shells, carbon, and other eco-friendly solution. The last method of filtering rainwater is through solar pasteurization.

Can you boil rainwater and drink it?

Most rain is perfectly safe to drink and maybe even cleaner than the public water supply if catchment and storage systems are hygienic and well-maintained. Rainwater is only as clean as its container. Only rain that has fallen directly from the sky should be collected for drinking. Boiling and filtering rainwater will make it even safer to drink.

Do I need to filter rainwater?

Usually, all the water we use goes through the necessary treatment steps to produce potable water. With a rainwater harvesting system, only basic filtration of particles is generally required to give water that is sufficiently clean enough for flushing toilets, washing clothes and watering the garden.

How do I filter rainwater from my roof?

How to Filter Rainwater from a Roof;

  1. Filter the water before it enters the storage tank.
  2. Oxygenate the water.
  3. Siphon off any floating particles.
  4. Fit a moving fine mesh filter before the pump.

Why is rain collecting illegal?

The law used to be the only obstacle; collecting rain was technically illegal in many states because any precipitation was subject to that strict hierarchy of water rights stretching back to the mid-1800s. But studies estimate that only a fraction of rain actually makes it to a river – less, during a drought.

Why is rainwater not good for drinking?

While useful for many things, rainwater may not be as pure as you might think, so you can’t assume it’s safe to drink. Rainwater can carry bacteria, parasites, viruses, and chemicals that could make you sick, and it has been linked to disease outbreaks. This could be the case if the catching and storage system are not hygienic and well-maintained.

How can we make rainwater harvesting at home?

The easiest way to harvest rain is through a rain barrel (make your own from a large trash can or an old drum) linked to a pipe fitted to collect rainwater from the rooftop and verandah of the house. To prevent the barrel from becoming a mosquito breeding ground, fasten a tight-fitting top to it, and screen the ends of the downspouts leading into the barrels.

Can you shower in rainwater?

Most people are comfortable with washing clothes or flushing toilets using rainwater. But experts say that rainwater is completely safe for bathing and showering. Also, bathing in rainwater has some great health advantages. Rainwater is soft by nature, this means there are fewer minerals dissolved in it than hard water.

Is rainwater good for hair?

Rainwater is better than hard water, it doesn’t leave a soap residue that gets left behind as much as hard water does. Washing your hair in rainwater creates a better lather than hard water. Many that have used rainwater stated that when washing their hair, they have noticed a much softer and silky feel to their hair.

Is rainwater hard or soft?

As rainwater falls, it is naturally soft. However, as water makes its way through the ground and into our waterways, it picks up minerals like chalk, lime, and mostly calcium and magnesium and becomes hard water. Since hard water contains essential minerals, it is sometimes the preferred drinking water.

Why is my rainwater yellow?

Tannins in drinking water are caused by natural decaying of organic matter. Leaves or pine needles in the gutters are generally the cause in a rainwater collection system. The tannins may cause a yellow color of the water, yellow staining on fixtures, and yellow staining in laundry.

How long can rainwater be stored?

Rainwater can be stored from anywhere between one week and indefinitely. The more consideration you put into your storage system – using the right materials, preventing algae and mosquitos – the longer your rainwater’s shelf-life.

Are rain barrels worth it?

Many arid or drought-prone regions have restrictions on lawn watering, and a rain barrel system can be an excellent way to get around these rules. If water use is expensive, capturing precipitation to use in the household can also be worthwhile. Considering this, a 4,000-gallon system might cost $15,000.

How do you use rainwater?

There are many different uses for collected rainwater no matter what type of rainwater harvesting system you have;

  • Drinking and cooking.
  • Bathing and laundry.
  • Flushing toilets.
  • Watering lawns, gardens, and houseplants.
  • Composting.
  • Water for wildlife, pets, or livestock.
  • Outdoor ponds and water features.
  • Rinsing vegetables.

Why do we harvest rainwater?

By harvesting the rainwater that lands on your roof, you can reduce the impact of stormwater runoff in your area, which can otherwise damage creeks and other water habitats. Rainwater is also good for the garden – after all, it’s what your garden is naturally watered with.

What nutrients does rain have?

Rainwater contains nitrate – the most bio-available form of nitrogen. Nitrogen is one of the three key macro-nutrients that plants need to thrive–necessary for the development of lush foliage. Many forms of nitrogen are not actually absorbable by plants.

What are the qualities of rainwater?

The quality of rainwater is directly related to the cleanliness of catchments, gutters, and storage tanks. Rooftop catchment surfaces collect dust, organic matter, leaves, and bird and animal droppings, which can contaminate the stored water and cause sediment buildup in the tank.



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