Itchen (Cheriton Stream) Water Body Moderate ecological status
Get Itchen (Cheriton Stream) data Attributes Water Body ID GB107042016670 Water Body Type River Hydromorphological designation not designated artificial or heavily modified NGR SU5741331788 Catchment area 7689.151 ha Length 11.045 km Catchment area 76.892 km2 Natural England Revised WB Protected Area targets http://publications.naturalengland.org.uk/publication/5077964668534784 Surveillance Water Body No Classifications Classification Item 2019 2022 Ecological Good Moderate Biological quality elements Good Moderate Invertebrates High High Macrophytes and Phytobenthos Combined Good Moderate Macrophytes Sub Element Good Moderate Physico-chemical quality elements High High Acid Neutralising Capacity High Ammonia (Phys-Chem) High High Biochemical Oxygen Demand (BOD) High Dissolved oxygen High High Phosphate High High Temperature High High pH High High Hydromorphological Supporting Elements Supports good Supports good Hydrological Regime Supports good High Morphology Supports good Supports good Specific pollutants High High Zinc High High 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 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 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 Good 2015 Invertebrates Good 2015 Macrophytes and Phytobenthos Combined Good 2015 Physico-chemical quality elements Good 2015 Ammonia (Phys-Chem) Good 2015 Dissolved oxygen Good 2015 Phosphate Good 2015 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 Zinc 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 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 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 Cypermethrin (Priority) Good 2015 Fluoranthene Good 2015 Other Pollutants Does not require assessment 2015
Protected areas PA Name Id Directive More information Hamble Estuary Eutrophic NVZ (TraC) ET3 Nitrates Directive Hampshire Chalk G143 Nitrates Directive River Itchen UK0012599 Special Area of Conservation Natural England
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 ITCHEN/CHERITON STREAM/UPSTREAM OF FLYOVER/ 16114 2011, 2012, 2010, 2009 ITCHEN/CHERITON STREAM/TICHBORNE/ 16236 2011, 2012, 2010, 2009 TEST AND ITCHEN/ITCHEN/CHERITON STREAM/UPSTREAM OF MUDDY LAN 35989 2011, 2012 43102 43102 2012, 2009, 2014, 2010, 2013, 2011 2016, 2015, 2019, 2013, 2014 2019, 2022 ITCHEN/CHERITON STREAM/VERNAL FARM/ 6248 2011, 2014, 2012, 2010, 2009, 2013 110041 110041 2011, 2010 ITCHEN/CHERITON STREAM/CHERITON STREAM 1: DOWNSTREAM OF FLYOVER/ 30238 2011, 2012, 2010, 2013 ITCHEN/CHERITON STREAM/UPSTREAM OF CHERITON MILL/ 35992 2011, 2012, 2013 42062 42062 2009, 2010 ITCHEN D/S ALRESFORD BYPASS G0003812 2009, 2012, 2013, 2014 ITCHEN/CHERITON STREAM/D/S VERNAL FARM/ 44441 2013 ITCHEN/CHERITON STREAM/CHERITON STREAM 4: CHERITON MILL/ 30237 2011, 2014, 2012, 2010, 2013 ITCHEN/CHERITON STREAM/CHERITON STREAM 2: HABITAT WORKS/ 30239 2011, 2012, 2010, 2013 ITCHEN/CHERITON STREAM/CHERITON STREAM 3: IRONBRIDGE/ 30240 2011, 2012, 2010, 2013 DOWNSTREAM SEWARDS BRIDGE EQSD G0006490 2016 TITCHBOURNE SEWARDS B G0003814 2009 2015, 2016, 2019 2022, 2019