Ghaziabad Nagar Nigam — Wastage of water in Water purification shops

In our locality there are four water purification shops.They purify water in very high quantity and flow off the waste water in the drains by the water level is going to be very low.
Whereas by the rule they have to supply the waste water to the ground by which water level become constant.In the coming days water level become very low.
Stop them from wasting the water.