India's ganges river, a vital natural resource, is thought to be seriously contaminated. why has the government been slow in cleanup efforts?

There are a variety of reasons due to which the government has been slow in the cleanup efforts of the India’s Ganges River, which is a vital natural resource and is thought to be highly contaminated. Firstly the people of India believe that the Ganges is a holy river and it cannot be contaminated. Secondly with several industries coming up around the river banks the government is completely at fault for not committing themselves towards the cleaning of this holy river.