Rispri LabsENGINEERING A CIRCULAR FUTURE

SAFE DRINKING WATER / 13

Ready: level 9 of 9Already in useHome or village

Baked clay filter for iron and muddy water.
A clay filter that lasts three years.

Village water is both muddy and full of iron, and families cannot keep buying new cartridges. A filter made from baked local clay has tiny holes that trap rust and mud.

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YELLOW WATER, IRON AND MUDDY WATERDelivered by Rispri Labs
Yellow water, iron and muddy water
Yellow water, iron and muddy water

What it achieves

The key numbers.

90 to 95%

of iron removed.

3 years

or 20,000 litres per filter.

3 paise

per litre.

Problem and fix

The problem this solves.

  1. 01
    The problem

    Village water is both muddy and full of iron, and families cannot keep buying new cartridges.

    How it is fixed

    A filter made from baked local clay has tiny holes that trap rust and mud. When it slows down, you scrub it clean and use it again.

How it works

Step by step.

  1. 1

    Pour

    Water goes into a container fitted with a baked clay disc or candle.

  2. 2

    Trap

    Tiny holes in the clay catch rust and mud.

  3. 3

    Clean

    When it slows, scrub the surface and use it again.

Key features

Why it works well.

Removes 90 to 95% of iron and almost all the mud. One filter lasts about 3 years or 20,000 litres, at about 3 paise a litre.

  • Made locallyFrom red clay, sand and sawdust.
  • Zero water wastedAll water poured in comes out clean.
  • No powerWorks by gravity.
  • Almost all mud removedOver 99% of turbidity removed.

At a glance

The details.

RemovesIron (90 to 95%) and mud (over 99%)
Filter lifeAbout 3 years or 20,000 litres
Running costAbout 3 paise a litre
PowerNone
Ready levelLevel 9 of 9 (already in use)
ScaleHome or village

Costs are indicative and change with your water, site and plant size. We confirm them after testing a sample.

Where it is used

Who it is for.

  • Rural homes
  • Community water points
  • Government water schemes

Questions

Frequently asked questions.

Is this technology proven?

Yes. It is at ready level 9 of 9, which means: already in use. Removes 90 to 95% of iron and almost all the mud. One filter lasts about 3 years or 20,000 litres, at about 3 paise a litre.

What does it cost to run?

About about 3 paise a litre. The exact figure depends on your water and the size of the plant. We confirm it after testing a sample.

Can we try it on our own water first?

Yes. We test a sample in our NABL-accredited lab and, where it helps, run a small trial on your site before you invest in a full plant.

Do you supply and install it?

Yes. We design, supply, install and start up the system, train your staff, and our lab checks the treated water.

Yellow water, iron and muddy water

Ready: level 7 to 9 of 9Iron removal plant on the hand pumpPeople have stopped using the village hand pump because the water turns yellow and stains everything.Ready: level 7 of 9Large iron filter for schools and small townsA school, hostel or small town needs a lot of iron-free water every day.Ready: level 6 to 8 of 9Home iron filter, 15 litresA home or anganwadi gets yellow water from its tube well.Problem guideYellow Water and Red StainsIron makes people give up on a safe hand pump. A simple filter fixes it for a few paise a litre.

THE NEXT STEP

Fix it on
your own site.

Send us a water sample or a test report. We will check it, confirm this method fits and tell you what it costs to run.

Discuss your problem
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