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2015-11-23T22:37:16+05:30

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I) Sewage and waste water
ii) Septic tanks
iii) ocean and marine dumping
iv) Underground storage and tube leakages
v) Atmospheric deposition

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  • Brainly User
2015-11-23T22:39:21+05:30
1. Urbanisation .
2. Industrial waste are thrown into water masses.
3. Agricultural runoff and improper agricultural practices.
4. Religious and social pratices.
5. Connection to drainage patterns.
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