1. Khatri, who learned the craft from his grandfather, shares his last name with many Muslim textile artisans in the region who brought their craft to India from Sindh in Pakistan. 

2. That's the term for a treatment system that cleans dye-tainted water.

3. The ability to reuse water is critical for the village, which consumes over 52,000 gallons of water every day to maintain an annual output of over almost 460,000 square feet of hand-printed cloth. 

4. As water levels decrease, minerals in it like iron become more concentrated, which can leave dark spots on prints after the artisans wash them. 

5. But the output of the filter – about 13,500 gallons per day – is far from what they need to meet a growing demand for their textiles.

6. The largest systems are in South America, where they are predominantly used for treating industrial wastewater (…)