{
  "id": 2727716,
  "title": "Delhi-NCR twins build Rs 100 water filter that removes up to 93% of PFAS",
  "url": "https://urgent.news/2026/08/23/delhi-ncr-twins-build-rs-100-water-filter-that-removes-up-to-93-of",
  "topic": "science",
  "section": "Science",
  "published": "2026-08-23T04:42:52.000Z",
  "source": {
    "name": "Times of India",
    "slug": "times-of-india",
    "url": "https://timesofindia.indiatimes.com/science/delhi-ncr-twin-sisters-turn-okra-fenugreek-and-rice-husk-into-a-rs-100-electricity-free-water-filter-iit-delhi-tests-show-up-to-93-removal-of-pfas/articleshow/133434339.cms"
  },
  "original_language": "en",
  "account": "Delhi-NCR twins Naina and Nayantara Singh have developed a plant-based water purification system called Aqua Sattva. The innovative system uses okra, fenugreek, and rice husk to target microplastics and PFAS, also known as \"forever chemicals.\" The project began as a school-level research experiment and was later developed and tested at IIT Delhi. The filtration system consists of sachets containing a polymer derived from okra and fenugreek, and biochar made from rice husk. The estimated cost for a pack of 10 sachets is around Rs 100. The system can remove up to 93% of PFAS from water, according to testing conducted at IIT Delhi. Aqua Sattva offers an affordable, low-cost, and environmentally friendly alternative to conventional water purification systems.",
  "summary": "Delhi-NCR twins Naina and Nayantara Singh developed a plant-based water purification system. Their innovation, Aqua Sattva, uses okra, fenugreek, and rice husk to remove contaminants. This system targets microplastics and PFAS, often called forever chemicals. Independent laboratory testing showed significant removal efficiency for these pollutants. The affordable and eco-friendly prototype aims…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}