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  1. 7 Ways to Purify and Filter River Water (and Some That Won’t …

  2. The importance of a clean river – Project Clean Water

  3. 14 Things You Can Do to Clean Up Your Rivers, Streams, and the …

  4. 3 Ways to Clean Rivers - wikiHow

  5. 6. SELF-PURIFICATION PROCESSES IN RIVERSWater detective

  6. Two Ways to Purify Water - U.S. National Park Service

  7. Top 12 Cleanest Rivers in the US [Report 2024] - USA by Numbers

  8. River Water Pollution and Solutions - Save The Water

  9. Why are rivers so important? How can we protect them? | WWF