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A couple revealed they spend a measly $10 a month on their water bill — and do so by reusing their shower water to cook — all while forgoing toilet paper.

Anna and Diogo Masiello try to lead a zero-waste lifestyle, leading them to take on some unusual habits.

The Italian couple, who got married during a zero-waste wedding in May, have taken it upon themselves to save water by reserving their shower water in a jar which they clean with a charcoal water filter and reuse to drink, cook and water their plants.

They also stopped using toilet paper in May in an effort to save water, opting instead for a portable bidet attached to a plastic bottle.

“It wasn’t hard to ditch loo roll — you’d be surprised how easy it is to go without it,” Anna told SWNS.

The couple claims that ditching toilet paper and re-using their shower water saves 14 liters, or about 3.7 gallons, of water a year.

An average person goes through about 100 rolls of toilet paper per year, Anna, an eco-influencer, explained.

These conservation efforts allow Anna, 28, and Diogo, 29, to spend just £8.43 — $10.09 — per month on water.

She said many people were confused by their portable bidet, a bottle that is filled with water and has a small shower-style head attached to it that releases water to wash with.

Anna said you “simply wipe your privates” with a towel after, and that it’s clean and hygienic.

“When I shared it on social media, someone even commented they would rather die than use one,” she said.

Anna and Diogo also swap clothes with friends, use shampoo and soap bars instead of bottles and consume a plant-based diet.

“I haven’t bought any clothes from fast fashion stores for five years,” Anna shared. “I absolutely love thrifting and going to swap events. I try to appreciate everything I have.”

Anna also wears period pants and menstrual cups instead of using disposable products.

The couple also saves the synthetic fibers from their washing machine with the hopes of one day using them to stuff a pillow.

They produce just one bin of waste every six months.

“When I started my zero-waste journey, I felt the weight of the world on my shoulders as I was trying to do everything perfectly,” she said.

“I’ve soon come to realize you can’t do everything perfectly and it’s a completely personal journey you have to take,” she continued. “We just do what we can and what works for us.”

Anna’s journey to an eco-friendly lifestyle started when she realized how much waste she was producing and tried to figure out how to reduce it. 

When it comes to giving advice on how others can live a sustainable life, her top tips include starting small, don’t try to be perfect, swapping plastic toothbrushes for a bamboo one, partaking in meatless Mondays and buying a Guppyfriend — a bag that collects the fibers from clothing in the wash. 

Most importantly, Anna suggests living the life that works for you.

“I recommend people start with what is important to them, whether that’s food fashion and waste and then go from there.”