Welcome to Hydrologic

At Hydrologic, we’re in the business of getting clean water to more people. And we believe that business is a powerful way to do that.

To paraphrase an old saying: give away a water filter, and one family will have clean water for a while; set up a water-filter supply chain, production facility, and sales force, and the market will deliver many more filters to many more people for a long time.

We’re delivering a product to Cambodian households that they demand and deserve — 600,000 filters delivered to date.

We’re leading the market by example with our commitment to transparency, product quality, and superior value — with annual audits by an international certifying body.

We’re preventing needless illness and death cause by water-borne diseases — diseases that disproportionately affect children under 5 years of age.

We’re saving thousands of tons of firewood that would otherwise be burned to boil water — saving Cambodia’s forests and fighting global climate change.

Order your Tunsai Water Filter today!

Hydrologic is a Social Enterprise registere
d in 2010 with the Cambodian Ministry of Commerce.



Hydrologic’s CWPs are locally produced by mixing clay with finely ground combustible materials read more

Social Marketing

Using marketing expertise from the private sector, Hydrologic is driving consumer demand for its CWP products read more


Ceramic Water Purifiers have set the standard for water filtration in developing countries for the last 30 years read more

Further Reading

International renown and acclaim for Hydrologic read more