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A Toilet For India That Also Delivers Clean Water

A smart solution for India's sanitation needs: A toilet that generates the money to clean itself.

  • <p>In India, 600 million people lack access to a clean toilet, and, lately, the government has been on a big drive to build more of them.</p>
  • <p>SHRI, formerly called Humanure, has a solution it thinks can help. It builds a 16-toilet community block with a big collection tank underneath.</p>
  • <p>As the waste degrades, it pipes off the biogas to run an electric generator.</p>
  • <p>Then it uses the electricity to clean groundwater, which it sells to offset the cost of cleaning the toilets.</p>
  • 01 /04

    In India, 600 million people lack access to a clean toilet, and, lately, the government has been on a big drive to build more of them.

  • 02 /04

    SHRI, formerly called Humanure, has a solution it thinks can help. It builds a 16-toilet community block with a big collection tank underneath.

  • 03 /04

    As the waste degrades, it pipes off the biogas to run an electric generator.

  • 04 /04

    Then it uses the electricity to clean groundwater, which it sells to offset the cost of cleaning the toilets.

In India, 600 million people lack access to a clean toilet, and, lately, the government has been on a big drive to build more of them. Prime Minister Narendra Modi’s "Clean India" campaign aims to provide decent sanitation to all Indians by 2019.

SHRI, formerly called Humanure, has a solution it thinks can help. It builds a 16-toilet community block (eight for women and eight for men), with a big collection tank underneath. As the waste degrades, it pipes off the biogas to run an electric generator. Then it uses the electricity to clean groundwater, which it sells to offset the cost of cleaning the toilets.

So far, SHRI has built four blocks in Bihar state, in northern India, and co-director Joan DeGennaro says it's just getting started. The non-profit now hopes to tap into the billions of government rupees available for toilet projects, as well as billions of dollars potentially on offer in Silicon Valley.

"We're making a big push to fundraise in Silicon Valley from VCs and angels who normally make startup investments," she says. "We're appealing to them because we do have that sustainable element of generating revenue with the water."

SHRI (which stands for Sanitation and Health Rights) was part of the 2016 crop of non-profits in the Y Combinator accelerator program. And DeGennaro says the experience helped give the group a more business-like approach (as well as a grant for $100,000). "They provide funding as well as the opportunity to gain credibility alongside traditional software startup companies. We were told we were just like any company in the batch and that, just because we're a non-profit, that shouldn't distract us."

Getting sanitation to billions of underserved people is particularly challenging because it's not just a question of building toilets. Research shows that people often need to be encouraged to use new facilities, and that cultural factors can be a deterrence. Critics say the Clean India program has been insufficiently focused on these human factors, and that the large sums of money on offer has led to corruption.

The SHRI blocks are designed for villages of 1,500 people and DeGennaro says, on average, they're used by 800 people a day. Access is free, unlike other toilet projects where charging a fee is thought to raise the value of the service in the customer's eyes.

"The challenge is proving out this theory of change," DeGennaro says. "The traditional understanding is there needs to be economic buy-in: charging to use the toilet and that people need personal toilets rather than community ones. We have to show people will use these facilities. The key thing we think is they're kept clean."

The electric generator pumps water for about four hours a day. Villages fill up 20-liter jugs of water using a pre-paid card. The water sales pay for crews of cleaners to visit twice a day. Every two years, the digester needs to be cleaned: some of the sludge can be used as fertilizer, further offsetting overheads.

DeGennaro says the blocks cost about $25,000 a time, which works out cheaper than what the government is prepared to pay for toilets in people's homes. It has a program to reimburse households up to $250 to install their own systems.

SHRI has struck a deal for another community block with the state of Jharkhand, which neighbors Bihar. But it would like to grow more quickly and affect more lives. And for that it needs private funding as well. "The pace at which the government can offer us support is always slow," DeGennaro says.

All Photos: via SHRI

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