Kerala - Kochi   

Turbidity level continues to be high in the Periyar

Staff Reporter

Government's action plan fails to take off

KOCHI: Turbidity (the condition that makes water muddy) level in Periyar water continued to remain high on Friday following the desilting of Kallarkutty dam.

Turbidity rose to 77 ntu (nephelometric turbidity units) on Friday night. "This seems to be the highest turbidity level recorded after the problem began," said Jolly Mathew, Executive Engineer, Quality Control Wing, Kerala Water Authority (KWA), Aluva. Tests conducted at the quality-monitoring laboratory of the authority revealed fluctuating turbidity levels for the last one week. Ms. Mathew said that turbidity level was 66 ntu at 10.30 a.m. on Saturday.

The level had varied between 55 and 66 ntu during the last five days.

"During rainy seasons, it was easy to filter these fine particles. But with rain keeping away, the treatment process has become really tough. Employees are doing their best to provide quality drinking water to the public," she said.

Ms. Mathew said that turbidity level was less than 5 ntu after treatment. The Head Works Section of the KWA at Aluva had been trying to keep the turbidity level below 10 ntu for the last two weeks. Executive Engineer K.G. Unnikrishnan said that two tonnes of lime and four tonnes of alum were used daily to meet the quality standards of water supplied from the Aluva pump house.

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