| 1 | Salap-II |  West Bengal Pollution Control Board (WBPCB) | | |
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| 2 | Belur Math, Howrah - WBPCB |  Central Pollution Control Board | | |
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| 3 | Ghusuri, Howrah - WBPCB | West Bengal Pollution Control Board (WBPCB) | | |
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| 4 | Padmapukur, Howrah - WBPCB | West Bengal Pollution Control Board (WBPCB) | | |
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