India, March 13 -- Chandigarh In response to MP Manish Tewari's questions on contaminated water supply in Chandigarh, the Centre on Thursday informed the Lok Sabha that the issue occurred largely due to muddy water entering pipelines during repair works and the use of water pumps by residents during non-supply hours.

Replying to the MP, Union housing and urban affairs minister Manohar Lal said complaints in UT had been reported from nearby areas such as Mauli Jagran, Daria and Hallo Majra. The minister said large-scale contamination was not found in the water quality testing, carried out in the city.

Satisfactory results were found for over 1,995 water samples which were tested in the last three months through NABL-accredited laboratori...