There are two types of sewer systems - storm sewers and sanitary sewers. Sanitary sewers ta
Scientists suggest using 'glow-in-the-dark tampons' to test rivers
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Tampon tests' could be used to track sewage in rivers
Glow-In-The-Dark Tampons Used To Find Sewage-Filled Waterways
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Glow-in-the-dark TAMPONS shed light on water pollution
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Glow-in-the dark tampons could help make our rivers cleaner - BBC News
How Glow-in-the-Dark Tampons Can Track Pollution