Cobbins Brook Water Body Poor ecological status
Attributes Water Body ID GB106038033190 Water Body Type River Hydromorphological designation not designated artificial or heavily modified NGR TL4205602655 Catchment area 38.708 km2 Surveillance Water Body No Length 15.222 km Catchment area 3870.79 ha Classifications Classification Item 2019 2022 Ecological Poor Poor Biological quality elements Poor Poor Invertebrates Poor Poor Macrophytes and Phytobenthos Combined Poor Moderate Macrophytes Sub Element Poor Moderate Physico-chemical quality elements Moderate Moderate Ammonia (Phys-Chem) Good High Dissolved oxygen High High Phosphate Poor Poor Temperature High High pH High High Hydromorphological Supporting Elements Supports good Supports good Hydrological Regime High High Morphology Supports good Supports 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 Good Perfluorooctane sulphonate (PFOS) Good Polybrominated diphenyl ethers (PBDE) Fail Priority substances Good Does not require assessment Cypermethrin (Priority) Good 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 No data to show
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 Diffuse source Poor nutrient management Agriculture and rural land management Invertebrates Details RNAG Point source Private Sewage Treatment Urban and transport Phosphate Details RNAG Point source Private Sewage Treatment Other Invertebrates Details RNAG Natural Drought No sector responsible Invertebrates Details RNAG Diffuse source Transport Drainage Urban and transport Invertebrates Details RNAG Physical modification Urbanisation - urban development Urban and transport Invertebrates Details RNAG Point source Misconnections Domestic General Public Invertebrates Details RNAG Physical modification Flood protection - structures Local and Central Government Invertebrates Details RNAG Diffuse source Poor soil management Agriculture and rural land management Invertebrates Details RNAG Diffuse source Urbanisation - urban development Urban and transport Macrophytes and Phytobenthos Combined Details RNAG Point source Private Sewage Treatment Other Invertebrates Details RNAG Diffuse source Poor Livestock Management Agriculture and rural land management Macrophytes and Phytobenthos Combined Details RNAG Diffuse source Poor nutrient management Agriculture and rural land management Phosphate Details RNAG Diffuse source Transport Drainage Urban and transport Invertebrates Details RNAG Diffuse source Poor nutrient management Agriculture and rural land management Macrophytes and Phytobenthos Combined Details RNAG Diffuse source Urbanisation - urban development Urban and transport Phosphate Details RNAG Point source Misconnections Domestic General Public Invertebrates Details RNAG Point source Private Sewage Treatment Urban and transport Macrophytes and Phytobenthos Combined Details RNAG Diffuse source Poor Livestock Management Agriculture and rural land management Phosphate Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Polybrominated diphenyl ethers (PBDE) Details RFD High to Good deterioration, no action required (RFD only) Not applicable No sector responsible Dissolved oxygen 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 6 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 1 0 6 0 0 0 0 Water Industry 0 0 0 0 0 0 0 Local & central government 1 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 2 0 6 0 0 6 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 Invertebrates Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens 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 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 2015 Hexabromocyclododecane (HBCDD) Good 2015 Hexachlorobenzene Good 2015 Hexachlorobutadiene Good 2015 Mercury and Its Compounds Good 2015 Perfluorooctane sulphonate (PFOS) Good 2015 Polybrominated diphenyl ethers (PBDE) Good 2063 Natural conditions: Chemical status recovery time Priority substances Good 2015 Cypermethrin (Priority) Good 2015 Fluoranthene Good 2015 Other Pollutants Does not require assessment 2015
Protected areas PA Name Id Directive More information LEE NVZ S443 Nitrates Directive Lee SWSGZ4006 Safeguard Zone
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 89161 89161 2013, 2016, 2019 2019, 2022 COBBINS BROOK AT SEWARDSTONE RD PLER0023 2010, 2013, 2011, 2009, 2014, 2012 2019, 2016, 2014, 2015 2022, 2019 34243 34243 2009, 2014 2016, 2019, 2014, 2015 2019, 2022 LEE/COBBINS BROOK/WALTHAM CROSS FOOTBALL GROUND/ 41611 2013, 2014 LEE/COBBINS BROOK/COBBINSEND ROAD MITIGATION SITE/ 36353 2013 LEE/COBBINS BROOK/COBBINSEND ROAD CONTROL SITE/ 36354 2013, 2011 167687 167687 2014 2016, 2015, 2019, 2014 2022, 2019