Over Water Water Body Moderate ecological status
Attributes Water Body ID GB31228806 Water Body Type Lake Hydromorphological designation heavily modified NGR NY2517335073 Altitude 188 m Mean depth 2.258 m Surveillance Water Body Yes Surface area 0.197 km2 Surface area 19.741 ha Catchment area 500.5 ha Classifications Classification Item 2019 2022 Ecological Moderate Moderate Biological quality elements Moderate Moderate Chironomids (CPET) Good Good Macrophytes and Phytobenthos Combined Moderate Moderate Macrophytes Sub Element Moderate Moderate Phytobenthos Sub Element Good Good Phytoplankton Good Good Physico-chemical quality elements Moderate Moderate Acid Neutralising Capacity High High Ammonia (Phys-Chem) High High Salinity High High Total Nitrogen Good Good Total Phosphorus Moderate Moderate Supporting elements (Surface Water) Moderate Moderate Expert Judgement Moderate Moderate Mitigation Measures Assessment Good Good Specific pollutants High High Chlorothalonil High High Chromium (VI) High High Copper High High Diazinon High High Dimethoate High High Iron High High Manganese High High Pendimethalin High High Zinc High High Chemical Fail Does not require assessment Priority hazardous substances Fail Does not require assessment 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 Pentachlorobenzene Good Perfluorooctane sulphonate (PFOS) Good Polybrominated diphenyl ethers (PBDE) Fail Quinoxyfen Good Tributyltin Compounds Good Priority substances Good Does not require assessment 1,2-dichloroethane Good Aclonifen Good Alachlor Good Benzene Good Bifenox Good Cybutryne 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 Does not require assessment 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 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 Flow Surface water abstraction Water Industry Macrophytes and Phytobenthos Combined Details RNAG Diffuse source Poor nutrient management Agriculture and rural land management Macrophytes and Phytobenthos Combined Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Polybrominated diphenyl ethers (PBDE) Details RNAG Point source Private Sewage Treatment Domestic General Public Total Phosphorus Details RNAG Diffuse source Poor nutrient management Agriculture and rural land management Total Phosphorus Details RNAG measures delivered to address reason, awaiting recovery Not applicable No sector responsible Mercury and Its Compounds Details RNAG Physical modification Other (not in list, must add details in comments) Water Industry Mitigation Measures Assessment 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 0 0 0 0 0 0 Local & central government 0 0 0 0 0 0 0 Domestic general public 0 0 1 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 1 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 Chironomids (CPET) Good 2015 Macrophytes and Phytobenthos Combined Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Phytoplankton Good 2015 Physico-chemical quality elements Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Acid Neutralising Capacity Good 2015 Ammonia (Phys-Chem) Good 2015 Dissolved oxygen Good 2015 Salinity Good 2015 Total Nitrogen Good 2015 Total Phosphorus Good 2027 - Low confidence Disproportionately expensive: Disproportionate burdens Hydromorphological Supporting Elements Not assessed 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 2021 Disproportionately expensive: Disproportionate burdens Specific pollutants High 2015 Chlorothalonil High 2015 Chromium (VI) High 2015 Copper High 2015 Diazinon High 2015 Dimethoate High 2015 Iron High 2015 Manganese High 2015 Pendimethalin 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 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 Pentachlorobenzene 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 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 Over Water UKGB31228806 Drinking Water Protected Area
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 RIVER ELLEN AT OVERWATER 88005781 2013, 2014, 2012 2013, 2019, 2016, 2015, 2014 2019, 2022 154958 154958 2014, 2012, 2013 2016, 2015, 2019, 2014, 2013 2019 154959 154959 2013, 2014 2015, 2014, 2013, 2016 155153 155153 2016, 2019 2022, 2019 OVERWATER RAW WATER @ OVERWATER RES 88019603 2014