Project Sites

Plant	Capacity	Initial Arsenic conc (ppb)	Final Arsenic conc (ppb)	Initial Iron conc (ppb)	Final Iron conc (ppb)
Merudandi, Basirhat	3000 lt/cycle	282	10-50	3326	< 200
Naihati Purbapara, Basirhat	3000 lt/cycle	175	10-50	1573	< 200
Tepul, Gobardanga	4000 lt/cycle	158	10-50	2936	174
Ghetugachi, Chakdah	3000 lt/cycle	206.5	10-50	2077	< 200
Naserkul, Ranaghat	3000 lt/cycle	187	10-50	3225	177

Name of Plant	Starting of Operation	Delivery of Water
Merudandi, Basirhat, North 24 Parganas, WB	12th June, 2008	18th august, 2008
Purbapara, Basirhat North 24 Parganas, WB	12th June, 2008	5th August, 2008
Rangapur, Nilgunj North 24 Parganas, WB	10th October, 2008	1st December, 2008
Gotra, Ghetugachi, Chakdah, Nadia, WB	20th October, 2008	16th December, 2008
Tepul, Gobardanga North 24 Parganas, WB	3rd October, 2008	4th December, 2008
Naserkul, Ranaghat, Nadia, WB	10th November, 2008	15th January, 2009

Max Permissible Limit:

Arsenic: 10 ppb or 10 micrograms per liter (USEPA/WHO)

Iron: 0.3 mg per L or 300 ppb(USEPA)

"On January 22, 2001 EPA adopted a new standard for arsenic in drinking water at 10 parts per billion (ppb), replacing the old standard of 50 ppb. The rule became effective on February 22, 2002. The date by which systems must comply with the new 10 ppb standard is January 23, 2006."

Source: http://water.epa.gov/lawsregs/rulesregs/sdwa/arsenic/regulations.cfm