AAP leader Sanjay Singh demands samples taken for water quality check

AAP leader and Rajya Sabha MP Sanjay Singh has raised question on BIS report on Delhi's water quality.
Singh said that how come Jal Shakti minister Gajendra Singh Shekhawat's report on water quality is different from Ram Vilas Paswan's report.
He has written a letter to Paswan demanding a copy of samples, which were used to check the water quality of Delhi.