In Arcata, the towns people have created an integrated waste water treatment process within a natural system. A citizen group called FOAM helps in upkeep of this project.
'Ecosen’ toilets in Kerala and Sri Lanka is also an initiative for water conservation. How ?

Explanation

**Step-by-Step Solution:**

1. **Understanding Integrated Wastewater Treatment in Arcata:**
- Arcata has developed an integrated wastewater treatment system that utilizes natural processes. This system is designed to treat wastewater while also benefiting the surrounding environment.
- The community plays a significant role in maintaining this system, with the citizen group FOAM (Friends of the Arcata Marsh) actively involved in its upkeep.

2. **Introduction to Ecosan Toilets:**
- Ecosan toilets, or ecological sanitation toilets, are designed to conserve water and minimize environmental impact. They are particularly relevant in areas where water is scarce or groundwater is contaminated.
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