| 26 | Report on the quality of bathing waters in Hampshire, Sussex, Kent and the Isle of Wight : 1992 bathing season |
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| 27 | The application of toxicity-based criteria for the regulatory control of wastewater dicharges Response compendium March 1997 |
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| 28 | Rising groundwater levels in the chalk-basal sands aquifer of the Central London Basin. Progress report, March 1996 |
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| 29 | Second interim report on the environmental impacts of the drought on Yorkshire's rivers April 1995 to April 1996 |
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| 30 | Interim report on the environmental impacts of the drought on Yorkshire rivers April 1995 to April 1996 |
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| 31 | An investigation into the bacterial water quality of the River Umber, N. Devon : December 1996 : DEV/WQ/14/96 |
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| 32 | A desk top study into the probable causes of poor water quality at Higher Hollacombe Farm (RO5K013) on the Hollacombe Lake |
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| 33 | Assessment of the Trophic Status of Rivers using Macrophytes - supporting documentation for evaluation of the Mean Trophic Rank |
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| 34 | Biosensors for environmental monitoring : a review of capabilities and strategies for the future : consultant's report to the NRA |
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| 35 | NRA report of the blue-green algal monitoring 1990 : a report by the toxic blue-green algae task group |
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| 36 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
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| 37 | Quality audit of biological samples for the 1991 river quality survey |
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| 38 | Pesticides in the aquatic environment 1997 full report |
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| 39 | Charging for discharges scheme : guidance to the agricultural industry |
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| 40 | Guidance for estimating the air quality impact of stationary sources - GN 24 |
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| 41 | The National Centre for Toxic and Persistent Substances |
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| 42 | The groundwater regulations (Bilingual) : Rheoliadau dwr daear (Bilingual) |
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| 43 | River quality in England and Wales : a report of the 1990 survey |
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| 44 | Stream survey and assessment in the Ashford and Folkestone areas |
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| 45 | The 1990 river and estuary classification survey of England and Wales |
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| 46 | Investigation into the cause of high phenols in Budleigh Brook (1998) |
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| 47 | Leachate Monitoring For The Brogborough Test Cell Project |
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| 48 | An investigation into the sewage system and storm overflow at Beer (1997) |
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| 49 | Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide |
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| 50 | Guidance on the use of Bioassays in Ecological Risk Assessment |
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