Chess Stream Water Body Moderate ecological status
Attributes Water Body ID GB107041012110 Water Body Type River Hydromorphological designation not designated artificial or heavily modified NGR TQ2357217415 Catchment area 2711.163 ha Length 9.29 km Catchment area 27.112 km2 Surveillance Water Body Yes Classifications Classification Item 2019 Ecological Moderate Biological quality elements Moderate Fish Good Invertebrates Moderate Macrophytes and Phytobenthos Combined Moderate Macrophytes Sub Element Moderate Phytobenthos Sub Element Moderate Physico-chemical quality elements Moderate Ammonia (Phys-Chem) High Dissolved oxygen Good Phosphate Moderate Temperature High pH High Hydromorphological Supporting Elements Supports good Hydrological Regime Supports good Morphology Supports good Specific pollutants High Chlorothalonil High Pendimethalin High Chemical Fail Priority hazardous substances Fail Benzo(a)pyrene Good Cadmium and Its Compounds Good Dioxins and dioxin-like compounds Good Heptachlor and cis-Heptachlor epoxide Good Hexabromocyclododecane (HBCDD) Good Hexachlorobenzene Good Hexachlorobutadiene Good Hexachlorocyclohexane Good Mercury and Its Compounds Fail Nonylphenol Good Perfluorooctane sulphonate (PFOS) Good Polybrominated diphenyl ethers (PBDE) Fail Quinoxyfen Good Tributyltin Compounds Good Priority substances Good 1,2-dichloroethane Good Aclonifen Good Alachlor Good Benzene Good Bifenox Good Cybutryne Good Cypermethrin (Priority) Good Dichloromethane Good Dichlorvos (Priority) Good Fluoranthene Good Lead and Its Compounds Good Nickel and Its Compounds Good Terbutryn Good Trichloromethane Good Other Pollutants Good Carbon Tetrachloride Good DDT Total Good para - para DDT Good
Why do all water bodies have a chemical status of fail?
Investigations into classification status Classification Element Cycle Year Status Outcome Phosphate 2 2013 Moderate Quite certain there is a problem Macrophytes and Phytobenthos Combined 2 2013 Moderate Quite certain there is a problem Invertebrates 2 2013 Moderate Quite certain there is a problem Dissolved oxygen 2 2013 Moderate Quite certain 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 Point source Sewage discharge (continuous) Water Industry Phosphate Details RFD Point source Sewage discharge (continuous) Water Industry Invertebrates Details RNAG Diffuse source Poor soil management Agriculture and rural land management Phosphate Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Mercury and Its Compounds Details RNAG Point source Sewage discharge (continuous) Water Industry Macrophytes and Phytobenthos Combined Details RNAG Diffuse source Poor nutrient management Agriculture and rural land management Macrophytes and Phytobenthos Combined 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 2 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 2 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 2 0 0 0 2 0
Objectives Classification Item Status Year Reasons Ecological Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Biological quality elements Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Fish Good 2021 Disproportionately expensive: Disproportionate burdens Invertebrates Good 2015 Macrophytes and Phytobenthos Combined Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Physico-chemical quality elements Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Ammonia (Phys-Chem) Good 2015 Dissolved oxygen Good 2015 Phosphate Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Temperature Good 2015 pH Good 2015 Hydromorphological Supporting Elements Supports good 2015 Hydrological Regime Supports good 2015 Supporting elements (Surface Water) Not assessed 2015 Specific pollutants High 2015 Chlorothalonil High 2015 Pendimethalin High 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 Cadmium and Its Compounds Good 2015 Dioxins and dioxin-like compounds Good 2015 Heptachlor and cis-Heptachlor epoxide Good 2015 Hexabromocyclododecane (HBCDD) Good 2015 Hexachlorobenzene Good 2015 Hexachlorobutadiene Good 2015 Hexachlorocyclohexane Good 2015 Mercury and Its Compounds Good 2040 Natural conditions: Chemical status recovery time Nonylphenol Good 2015 Perfluorooctane sulphonate (PFOS) Good 2015 Polybrominated diphenyl ethers (PBDE) Good 2063 Natural conditions: Chemical status recovery time Quinoxyfen Good 2015 Tributyltin Compounds Good 2015 Priority substances Good 2015 1,2-dichloroethane Good 2015 Aclonifen Good 2015 Alachlor Good 2015 Benzene Good 2015 Bifenox Good 2015 Cybutryne Good 2015 Cypermethrin (Priority) Good 2015 Dichloromethane Good 2015 Dichlorvos (Priority) Good 2015 Fluoranthene Good 2015 Lead and Its Compounds Good 2015 Nickel and Its Compounds Good 2015 Terbutryn Good 2015 Trichloromethane Good 2015 Other Pollutants Good 2015 Carbon Tetrachloride Good 2015 DDT Total Good 2015 para - para DDT Good 2015
Protected areas PA Name Id Directive More information Adur East (Sakeham) NVZ S522 Nitrates Directive Chess Stream NVZ S808 Nitrates 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 CHESS STREAM CHESS BRIDGE F0002654 2011, 2014, 2012, 2009, 2010, 2013 2014, 2015, 2016, 2019, 2013 2019 42810 42810 2010, 2013, 2012, 2011, 2009, 2014 2016, 2015, 2019, 2014, 2013 2019 42794 42794 2010, 2012, 2011, 2009, 2013, 2014 2016, 2013, 2019, 2015, 2014 2019 CHESS STREAM PARK FARM F0002658 2014, 2012, 2009, 2013 2014, 2015, 2016, 2019, 2013 2019 ADUR/ADUR TRIBUTARIES/CHESS STREAM/PARSONAGE WOOD/ 5638 2012, 2010, 2013, 2009, 2011 2013 ADUR/ADUR TRIBUTARIES/CHESS STREAM/PARK FARM/ 19693 2012, 2010, 2013, 2009, 2011 2015, 2013, 2016, 2019 2019 ADUR/ADUR TRIBUTARIES/CHESS STREAM/D/S CHESS BRIDGE/ 19691 2015, 2016, 2019 2019