SAFE DRINKING WATER / 14
Cheap filter for muddy water.
Clear water from muddy pond or flood water.
In the monsoon, pond or river water turns brown with mud and families have no way to clean it. A simple filter made from materials found locally.

What it achieves
The key numbers.
from very muddy water.
for one unit.
per litre.
Problem and fix
The problem this solves.
- 01The problem
In the monsoon, pond or river water turns brown with mud and families have no way to clean it.
How it is fixedA simple filter made from materials found locally. Water flows through it by gravity and comes out clear. It does not change the minerals in the water.
How it works
Step by step.
- 1
Fill
Pour muddy water into the filter.
- 2
Filter
Layers of locally available material hold back mud and germs.
- 3
Use
Clear water flows out by gravity.
Key features
Why it works well.
Very muddy water (100 to 300 NTU, a measure of muddiness) comes out clear, below 3 NTU.
- Built for emergenciesGood for floods and cyclones.
- Light and easy to carrySimple to move and set up.
- No change in mineralsOnly mud and germs are removed.
- Also removes some ironCan work as a home iron filter.
At a glance
The details.
| Handles | Muddy water of 100 to 300 NTU |
|---|---|
| Result | Below 3 NTU |
| Indicative unit cost | About INR 1,000 to 1,500 |
| Running cost | About 3 paise a litre |
| Ready level | Level 9 of 9 (already in use) |
| Scale | Home 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.
- Flood relief
- Villages using pond water
- Remote colonies
Questions
Frequently asked questions.
Is this technology proven?
Yes. It is at ready level 9 of 9, which means: already in use. Very muddy water (100 to 300 NTU, a measure of muddiness) comes out clear, below 3 NTU.
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
Other ways to fix this problem.
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