Want to test the water in a pond filled with algae - 48 peacocks have died after drinking from it - Please advice ASAP

We have a pond in which their is green algae in the water. After drinking the water 48 peacocks have died. I want to have the water and algae tested.
I request you to tell me ASAP where I can have these tested and what will be the cost so that no more birds die of it.

Please contact me on tarunsan23@gmail.com or 9896879795

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