Langstone Oysterbeds Water Body Good ecological status
Get Langstone Oysterbeds data Attributes Water Body ID GB510070073000 Water Body Type Transitional Water Hydromorphological designation artificial NGR SU7136903561 Surface area 15.938 ha Surface area 0.159 km2 Surveillance Water Body No Classifications Classification Item 2019 2022 Ecological Good Hydromorphological Supporting Elements Supports good Hydrological Regime High Supporting elements (Surface Water) Moderate Expert Judgement Moderate Mitigation Measures Assessment Good Chemical Fail Does not require assessment Priority hazardous substances Fail Does not require assessment Benzo(a)pyrene Good Dioxins and dioxin-like compounds Good Heptachlor and cis-Heptachlor epoxide Good Hexabromocyclododecane (HBCDD) Good Hexachlorobenzene Good Hexachlorobutadiene Good Mercury and Its Compounds Fail Perfluorooctane sulphonate (PFOS) Good Polybrominated diphenyl ethers (PBDE) Fail Priority substances Good Does not require assessment Fluoranthene Good Other Pollutants Does not require assessment Does not require assessment
Why do all water bodies have a chemical status of fail?
Investigations into classification status Classification Element Cycle Year Status Outcome Hydrological Regime 2 2013 Does Not Support Good Uncertain there is a problem
Reasons for not achieving good (RNAG) and reasons for deterioration (RFD) All reasons (RFDs and RNAGs) attributed to the classification elements in
this water body.
Reason Type SWMI Activity Category Classification Element More information RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Polybrominated diphenyl ethers (PBDE) Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Mercury and Its Compounds Details
Reasons for not achieving good status by business sector The issues preventing waters reaching good status and the sectors
identified as contributing to them. The numbers in the table are
individual counts of the reasons for not achieving good status with a
confidence status of 'confirmed' and 'probable', where the latest
classification is less than good status. There may be more than one
reason in a single water body. Note, table does not include reasons for
deterioration.
Significant water management issue Physical modifications Pollution from waste water Pollution from towns, cities and transport Changes to the natural flow and level of water Invasive non-native species Pollution from rural areas Pollution from abandoned mines Agriculture and rural land management 0 0 0 0 0 0 0 Industry 0 0 0 0 0 0 0 Mining and quarrying 0 0 0 0 0 0 0 Navigation 0 0 0 0 0 0 0 Urban and transport 0 0 0 0 0 0 0 Water Industry 0 0 0 0 0 0 0 Local & central government 0 0 0 0 0 0 0 Domestic general public 0 0 0 0 0 0 0 Recreation 0 0 0 0 0 0 0 Waste treatment and disposal 0 0 0 0 0 0 0 Other 0 0 0 0 0 0 0 No sector responsible 0 0 0 0 0 0 0 Sector under investigation 0 0 0 0 0 0 0 Total 0 0 0 0 0 0 0
Objectives Classification Item Status Year Reasons Ecological Good 2015 Biological quality elements Not assessed 2015 Physico-chemical quality elements Not assessed 2015 Hydromorphological Supporting Elements Supports good 2015 Hydrological Regime Supports good 2015 Supporting elements (Surface Water) Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Expert Judgement Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Mitigation Measures Assessment Good 2015 Specific pollutants Not assessed 2015 Chemical Good 2063 Natural conditions: Chemical status recovery time Priority hazardous substances Good 2063 Natural conditions: Chemical status recovery time Benzo(a)pyrene Good 2015 Dioxins and dioxin-like compounds Good 2015 Heptachlor and cis-Heptachlor epoxide Good 2021 Natural conditions: Chemical status recovery time Hexabromocyclododecane (HBCDD) Good 2015 Hexachlorobenzene Good 2015 Hexachlorobutadiene Good 2015 Mercury and Its Compounds Good 2040 Natural conditions: Chemical status recovery time Perfluorooctane sulphonate (PFOS) Good 2015 Polybrominated diphenyl ethers (PBDE) Good 2063 Natural conditions: Chemical status recovery time Priority substances Good 2015 Fluoranthene Good 2015 Other Pollutants Does not require assessment 2015
Protected areas PA Name Id Directive More information Chichester,Langstone and Portsmouth Harbours Eutrophic NVZ (TraC) ET2 Nitrates Directive Chichester And Langstone Harbours UK9011011 Special Protection Area Natural England Solent Maritime UK0030059 Special Area of Conservation Natural England Chichester And Langstone Harbours UK11013 Ramsar Site Natural England Langstone Harbour UKSW33 Shellfish Water Directive Langstone Harbour UKENCA55 Urban Waste Water Treatment Directive
Monitoring sites which have been used to classify this water body Shows which sites were used for classification for which years within
each cycle.
Monitoring Site Cycle 1 Cycle 2 Cycle 3