Case studies

Jal Kavach in the field

What it takes to get safe water into the hands of the families who need it, from government school taps in Andhra Pradesh to river villages in Assam and desert posts in Rajasthan. Much of this work is done alongside leading philanthropic and corporate foundations.

Andhra Pradesh schools
Assam river villages
Kotma, Madhya Pradesh
Scholars in 10 states
10,000+ filters, one programme
With the forces

Community programmes With the forces

A DetoXyFi team member shows schoolchildren and their teacher how Jal Kavach works on the school tap — Visakhapatnam district Children gather round as the filter goes onto their school tap. Photograph: DetoXyFi field team.

Visakhapatnam district, Andhra Pradesh · October 2026

Teaching safe-water habits at the school tap

Partner: Corporate foundation, CSR programme
How: Classroom sessions with teachers and children at the school tap
Result: The habit is taught at school and carried home

As part of a corporate foundation’s CSR programme, our India team ran Jal Kavach sessions in government primary schools across Visakhapatnam district. Teachers and children learned how the filter fits onto the existing school tap, how to use it every day and how to look after it so it keeps working.

Starting in the classroom matters. Children carry the habit home, and teachers keep reinforcing it long after our team has left. Because Jal Kavach needs no electricity and no plumbing work, it goes straight onto taps that have never had a purifier.

The hand-painted gate of a primary school in Dhubri district, Assam — Chapar, Dhubri The hand-painted gate of a village primary school, one of the distribution points. Photograph: DetoXyFi field team.

Chapar, Dhubri district, Assam · October 2026

150 filters in two days in Assam’s river villages

Partner: Corporate foundation, CSR programme
How: Demonstrations and household distribution, then handover
Result: The foundation’s own staff now run distribution

In the riverine villages around Chapar, families collect drinking water from very muddy sources. Working with a corporate foundation’s CSR team, we ran demonstrations and handed out about 150 Jal Kavach filters across six villages in two days, showing every household how to fit and use it.

The most important result came afterwards. Having seen how simple the filter is to set up and explain, the foundation’s own field staff now run the rest of the distribution themselves. That handover is what lets a programme grow without our team at every doorstep.

~150filters
6villages
2days

Kotma, Anuppur district, Madhya Pradesh · October 2026

A school, a hospital, and the end of cloth-straining

Partner: Corporate foundation, CSR programme
How: Demonstrations at a school, the hospital and nearby villages
Result: A doctor recorded a video; families stop cloth-straining

In Kotma we demonstrated Jal Kavach at a higher secondary school and at the local hospital, where a doctor joined in and recorded a short video with our team.

In the villages nearby we met women who strain their family’s drinking water through a cloth or a tea strainer every single day. They were glad to give up the daily straining and the washing of the cloth that goes with it. It is a small change, and it gives back time every day.

A Jal Kavach filter fitted to a home tap in Banka district, Bihar — Banka and Jehanabad, Bihar Filters fitted at scholars’ homes.

A Jal Kavach filter fitted to a home tap in Jehanabad district, Bihar — Banka and Jehanabad, Bihar Filters fitted at scholars’ homes.

10 states, from Bihar to Odisha · January to July 2026

1,000 filters for rural scholars and their families

Partner: Family foundation, scholarship programme
How: Tested in coordinators’ homes, then distributed at training camps
Result: Rated 4.3/5; 86%+ saw clearer water

A family foundation’s scholarship programme wanted its students, many from villages without safe water, to take a filter home. We started small: ten sample units went to state coordinators’ homes in ten states for testing. Then 1,000 filters were handed out at the programme’s training camps, where scholars learned how to use them before carrying them home.

In the early survey, families rated Jal Kavach 4.3 out of 5 on average, and more than 86% said their water now looked visibly clearer. One family in Bihar had been buying bottled water because their tap water ran cloudy. They now get clear water from their own tap.

1,000filters
10states
86%+saw clearer water

Seven states and Puducherry · 2026

More than 10,000 filters for one programme

Partner: Corporate foundation
How: Manufactured, shipped to ten sites, local staff trained
Result: Complete in Karaikal; rolling out at the other sites

One of India’s largest corporate foundations chose Jal Kavach for the communities around its sites in eastern, central and southern India. We manufactured and shipped more than 10,000 filters to ten delivery points, from Karaikal in Puducherry to Dhubri in Assam.

At each site our team trains the foundation’s local staff and runs launch demonstrations in schools, hospitals and villages, as in Visakhapatnam, Chapar and Kotma. Distribution is complete in Karaikal and rolling out across the other sites.

10,000+filters manufactured and shipped
10delivery sites, from Karaikal to Dhubri
On-groundtraining for local staff

With the armed forces

Soldiers on patrol need safe water where there are no taps, no power and no time. That is exactly where a pocket-sized filter earns its place.

An irrigation canal near Jaisalmer, Rajasthan, where water was sampled — Near Jaisalmer The canal we sampled, and its water before and after one pass through the filter.

Muddy canal water in a bottle next to a glass of clear water after filtering through Jal Kavach — Near Jaisalmer The canal we sampled, and its water before and after one pass through the filter.

Jaisalmer, Rajasthan · October 2025

A field demonstration with the Indian Army in the Thar Desert

At an Army training area near Jaisalmer, we demonstrated Jal Kavach to soldiers and senior commanders, including a live test with dusty water. Soldiers told us they need 4 to 5 litres a day on operations and carry it in jerry cans, while the Army’s large purifiers are truck-mounted and run on diesel. Officers were most interested in what a pocket-sized filter could mean on reconnaissance and disaster relief: each soldier making their own safe water, with no fuel and no truck. Canal water collected nearby came out clear.

An order from an infantry battalion

In June 2025 an Indian Army infantry battalion placed a supply order for Jal Kavach tap and bottle filters.

ITBP field trial, North-East

The Indo-Tibetan Border Police ran a field trial with its formations in the North-East. Their feedback, a tougher body with belt loops and a larger cartridge for long deployments, is going into a ruggedised version.

Indian Navy trial

Tap filters are in a no-cost, no-commitment field trial with the Indian Navy.

Available on GeM

Jal Kavach is listed on the Government e-Marketplace for easy procurement by government buyers.

Planning a water programme? Send me a few lines about the communities you serve and the water they drink. We’ll work out together whether Jal Kavach belongs in it, and where it doesn’t.

Dhananjay Goel, co-founder

Download the 2-page programme brief PDF, 0.8 MB

WhatsApp +91 98187 74733 · dhananjay@detoxyfi.com