| DWI reference | Subject or Short Title | Date |
|
| 1/90 | Technical Audit of Water Companies under S60 of the Water Act | 31/10/90 |
|
| 2/90 | Lead in drinking water ...treatment to reduce plumbosolvency | 8/11/90 |
|
| 3/90 | Approval of substances, products and processes | 21/12/90 |
|
| 1/91 | Technical Audit of Water Companies under S60 of the Water Act | 24/1/91 |
|
| 2/91 | Provision of information to the Inspectorate | 14/2/91 |
|
| 3/91 | Tech. Audit- provision of info. and Inspection prog for 1991 | 9/8/91 |
|
| 4/91 | Inspectorate organisation | 2/9/91 |
|
| 5/91 | Regulations 25 & 26: Approval of substances, products and processes | 21/12/90 |
|
| 1/92 | Provision of information for 1991 | 13/1/92 |
|
| 2/92 | Review of distribution undertakings | 31/1/92 |
|
| 3/92 | Investigation into a Drinking Water Incident at a Large Treatment Works | 10/3/92 |
|
| 4/92 | Water Byelaws | 6/5/92 |
|
| 5/92 | 1992 inspection prog. and provision of information (and erratum) | 21/8/92 |
|
| 6/92 | Technical audit 1992 | 13/10/92 |
|
| 7/92 | Review of technical audit procedures | 20/10/92 |
|
| 8/92 | Fluoride concentrations in water supplies | 11/12/92 |
|
| 9/92 | Approval of substances and products | 23/12/92 |
|
| 1/93 | Conditions of approval for epoxy resins | 28/1/93 |
|
| 2/93 | Information requirements(and subsequent invite to seminar) | 1/2/93 |
|
| 3/93 | WHO guidelines | 18/2/93 |
|
| 4/93 | Statistical aspects of water quality information requirements | 24/2/93 |
|
| 5/93 | Outbreak of Cryptosporidiosis in North Humberside | 7/4/93 |
|
| 6/93 | 1993 inspection prog. and provision of information | 4/6/93 |
|
| 7/93 | NAMAS agreement | 4/11/93 |
|
| 8/93 | Further guidance on analytical systems | 4/11/93 |
|
| 9/93 | Approval of substances and products | 30/12/93 |
|
| 2/94 | Guidance on implementation of paragraph 5(1) of the Water Undertakers (Information) Direction 1992 | 9/5/94 |
|
| 4/94 | Approval of in-situ applied epoxy resin products - third party certification | 11/5/94 |
|
| 5/94 | Technical Audit of Companies and 1994 inspection programme | 7/6/94 |
|
| 6/94 | Communication and liaison with the Inspectorate, Water Services Division and Welsh Office | 15/7/94 |
|
| 7/94 | Use of Colilert for compliance analysis | 15/7/94 |
|
| 8/94 | Treatment of values less than the limit of detection when calculating means | 12/8/94 |
|
| 9/94 | Fluoride concentrations in Water Supplies | 10/10/94 |
|
| 10/94 | Information requirements | 11/11/94 |
|
| 11/94 | Report 71 - "The Microbiology of Water 1994 - Part 1 - Drinking Water" | 2/12/94 |
|
| 12/94 | Regulations 25 & 26: Approval of substances, products and processes | 28/12/94 |
|
| 1/95 | Analytical Quality Control Data required to be provided by contract laboratories | 11/4/95 |
|
| 2/95 | Drinking water quality improvement programme: Periodic review of price limits 1995 - 2005 | 12/4/95 |
|
| 4/95 | Technical Audit of water companies under section 86 of the water Industry Act 1991 | 16/5/95 |
|
| 5/95 | Distribution system undertakings | 30/6/95 |
|
| 6/95 | Supplementary data requirements for statistical assessment of analytical performance | 23/8/95 |
|
| 8/95 | Review of incidents, and inspection of treatment works and service reservoirs | 18/9/95 |
