MEDINA Water Body
Moderate ecological status
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Attributes
- Water Body IDGB520710101600
- Water Body TypeTransitional Water
- Hydromorphological designationheavily modified
- NGRSZ5042393612
- Surface area163.233 ha
- Surface area1.632 km2
- Surveillance Water BodyNo
Classifications
Classification Item | 2019 | 2022 |
---|---|---|
Ecological | Moderate | Moderate |
Biological quality elements | Moderate | Moderate |
Invertebrates | Moderate | Moderate |
Infaunal Quality Index | Moderate | Moderate |
Macroalgae | Moderate | Moderate |
Opportunistic Macroalgae | Moderate | Moderate |
Phytoplankton | High | High |
Physico-chemical quality elements | Moderate | Moderate |
Dissolved Inorganic Nitrogen | Moderate | Moderate |
Dissolved oxygen | High | High |
Hydromorphological Supporting Elements | Supports good | Supports good |
Hydrological Regime | Does not support good | Does not support good |
Supporting elements (Surface Water) | Good | Good |
Mitigation Measures Assessment | Good | Good |
Specific pollutants | High | High |
Arsenic | High | High |
Copper | 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 | |
Mercury and Its Compounds | Fail | |
Perfluorooctane sulphonate (PFOS) | Good | |
Polybrominated diphenyl ethers (PBDE) | Fail | |
Priority substances | Good | Does not require assessment |
Fluoranthene | Good | |
Lead and Its Compounds | Good | |
Nickel and Its Compounds | Good | |
Other Pollutants | Does not require assessment | Does not require assessment |
Investigations into classification status
Classification Element | Cycle | Year | Status | Outcome |
---|---|---|---|---|
Macroalgae | 2 | 2013 | Moderate | Quite certain there is a problem |
Dissolved Inorganic Nitrogen | 2 | 2013 | Moderate | Quite certain there is a problem |
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 | Diffuse source | Poor nutrient management | Agriculture and rural land management | Dissolved Inorganic Nitrogen | Details |
RNAG | Suspect data | Not applicable | No sector responsible | Hydrological Regime | Details |
RNAG | Point source | Sewage discharge (continuous) | Water Industry | Macroalgae | Details |
RNAG | Other pressures | Unknown (pending investigation) | Urban and transport | Macroalgae | Details |
RNAG | Diffuse source | Coastal Background DIN | No sector responsible | Macroalgae | Details |
RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Macroalgae | Details |
RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Mercury and Its Compounds | Details |
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 | Dissolved Inorganic Nitrogen | Details |
RNAG | Unknown (pending investigation) | Unknown (pending investigation) | Sector under investigation | Invertebrates | Details |
RNAG | Other pressures | Unknown (pending investigation) | Urban and transport | Dissolved Inorganic Nitrogen | Details |
RNAG | Diffuse source | Coastal Background DIN | No sector responsible | Dissolved Inorganic Nitrogen | 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 | 2033 | Disproportionately expensive: Disproportionate burdens; Natural conditions: Ecological recovery time; Technically infeasible: Cause of adverse impact unknown |
Biological quality elements | Good | 2033 | Natural conditions: Ecological recovery time; Technically infeasible: Cause of adverse impact unknown |
Invertebrates | Good | 2027 - Low confidence | Technically infeasible: Cause of adverse impact unknown |
Macroalgae | Good | 2033 | Natural conditions: Ecological recovery time |
Phytoplankton | Good | 2015 | |
Physico-chemical quality elements | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Dissolved Inorganic Nitrogen | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Dissolved oxygen | Good | 2015 | |
Hydromorphological Supporting Elements | Supports good | 2015 | |
Hydrological Regime | Does not support good | 2015 | Disproportionately expensive: Unfavourable balance of costs and benefits |
Supporting elements (Surface Water) | Good | 2015 | |
Mitigation Measures Assessment | Good | 2015 | |
Specific pollutants | High | 2015 | |
Arsenic | High | 2015 | |
Copper | 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 | 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 | |
Lead and Its Compounds | Good | 2015 | |
Nickel and Its Compounds | Good | 2015 | |
Other Pollutants | Does not require assessment | 2015 |
Protected areas
PA Name | Id | Directive | More information |
---|---|---|---|
Cowes and Medina_M | UKSW45 | Shellfish Water Directive | |
Solent Maritime | UK0030059 | Special Area of Conservation | Natural England |
Solent And Dorset Coast | UK9020330 | Special Protection Area | Natural England |
Solent & Southampton Water | UK9011061 | Special Protection Area | Natural England |
Solent & Southampton Water | UK11063 | Ramsar Site | Natural England |
Newtown harbour, Mediina Estuary and Eastern Yar Eutrophic NVZ (TraC) | ET7 | Nitrates Directive | |
East Cowes | UK17850 | Bathing Water Directive | |
Medina Estuary | UKENCA121 | 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.