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Information Letters


DWI Information Letters 1997 - 1999


DWI Information Letters 1990-1995
DWI Information Letters 1996

DWI Information Letters 1997


DWI reference Subject or Short Title Date
1/97 Approval of substances, products and processes- Secretary of State's list 1996 2/1/97
2/97 Fluoride concentrations in water supplies 7/1/97
3/97 Compliance Data returns 1996 8/1/97
4/97 Review of analytical performance 14/1/97
5/97 1996 data returns for distribution system undertakings 17/1/97
6/97 Nitrate, pesticides and lead 1991 to 1994 24/1/97
7/97 Disinfection after mains bursts and repairs and other mains activities 11/04/97
8/97 S19 distribution system undertakings 18/4/97
9/97 Prohibition of use of cementitious and other linings 30/04/97
14/97 Drinking water quality compliance returns 5/12/97
16/97 1997 data returns for distribution system undertakings 19/12/97

DWI Information Letters 1998


DWI reference Subject or Short Title Date
1/98 CCM - Approval of substances, products and processes 01/01/98
5/98 S19 distribution system undertakings - collation of information requirements 04/03/98
6/98 Drinking Water Quality - Comparative Measures 19/05/98
9/98 The Periodic Review of Prices 23/07/98
10/1998 Year 2000 "Millenium Bug" and Implications for Water Supply 23/08/98
16/98 Risk Assessment, Sampling and Analysis Protocol - Cryptosporidium Regulations 22/12/98

DWI Information Letters 1999


DWI reference Subject or Short Title Date
1/99 Risk Assessment - Cryptosporidium Regulations 19/01/99
2/99 Feedback from Water Companies on DWI Performance in 1998 14/01/99
 
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Drinking Water Inspectorate,
Floor 2/A1, Ashdown House, 123 Victoria Street, London, SW1E 6DE
Telephone : 020 7944 5956 - Facsimile : 020 7944 5969
E-mail: dwi.enquiries@defra.gsi.gov.uk


Updated 29 October 2002
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