Cornwall South Water Body

Good ecological status

Attributes

  • Water Body IDGB620806570000
  • Water Body TypeCoastal Water
  • Hydromorphological designationnot designated artificial or heavily modified
  • NGRSW3694019102
  • Surface area12258.288 ha
  • Surface area122.583 km2
  • Surveillance Water BodyYes

Classifications

Classification Item2019
EcologicalGood
Biological quality elementsGood
InvertebratesGood
Infaunal Quality IndexGood
MacroalgaeGood
Rocky Shore MacroalgaeGood
PhytoplanktonHigh
Physico-chemical quality elementsHigh
Dissolved Inorganic NitrogenHigh
Dissolved oxygenHigh
Hydromorphological Supporting ElementsSupports good
MorphologySupports good
Specific pollutantsHigh
ArsenicHigh
Chromium (VI)High
CopperHigh
IronHigh
ZincHigh
ChemicalFail
Priority hazardous substancesFail
Benzo(a)pyreneGood
Benzo(b)fluorantheneGood
Benzo(g-h-i)peryleneGood
Benzo(k)fluorantheneGood
Cadmium and Its CompoundsGood
Dioxins and dioxin-like compoundsGood
Heptachlor and cis-Heptachlor epoxideGood
Hexabromocyclododecane (HBCDD)Good
HexachlorobenzeneGood
HexachlorobutadieneGood
Mercury and Its CompoundsFail
NonylphenolGood
Perfluorooctane sulphonate (PFOS)Good
Polybrominated diphenyl ethers (PBDE)Fail
Tributyltin CompoundsGood
Priority substancesGood
FluorantheneGood
Lead and Its CompoundsGood
Nickel and Its CompoundsGood
OctylphenolGood
TrichloromethaneGood
Other PollutantsDoes 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 TypeSWMIActivityCategoryClassification ElementMore information
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsibleMercury and Its CompoundsDetails

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 issuePhysical modificationsPollution from waste waterPollution from towns, cities and transportChanges to the natural flow and level of waterInvasive non-native speciesPollution from rural areasPollution from abandoned mines
Agriculture and rural land management0000000
Industry0000000
Mining and quarrying0000000
Navigation0000000
Urban and transport0000000
Water Industry0000000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total0000000

Objectives

Classification ItemStatusYearReasons
EcologicalGood2015
Biological quality elementsGood2015
InvertebratesGood2015
MacroalgaeGood2015
PhytoplanktonGood2015
Physico-chemical quality elementsGood2015
Dissolved Inorganic NitrogenGood2015
Dissolved oxygenGood2015
Hydromorphological Supporting ElementsNot assessed2015
Supporting elements (Surface Water)Not assessed2015
Specific pollutantsHigh2015
ArsenicHigh2015
Chromium (VI)High2015
CopperHigh2015
IronHigh2015
ZincHigh2015
ChemicalGood2063Natural conditions: Chemical status recovery time
Priority hazardous substancesGood2063Natural conditions: Chemical status recovery time
Benzo(a)pyreneGood2015
Benzo(b)fluorantheneGood2015
Benzo(g-h-i)peryleneGood2015
Benzo(k)fluorantheneGood2015
Cadmium and Its CompoundsGood2015
Dioxins and dioxin-like compoundsGood2015
Heptachlor and cis-Heptachlor epoxideGood2021Natural conditions: Chemical status recovery time
Hexabromocyclododecane (HBCDD)Good2015
HexachlorobenzeneGood2015
HexachlorobutadieneGood2015
Mercury and Its CompoundsGood2040Natural conditions: Chemical status recovery time
NonylphenolGood2015
Perfluorooctane sulphonate (PFOS)Good2015
Polybrominated diphenyl ethers (PBDE)Good2063Natural conditions: Chemical status recovery time
Tributyltin CompoundsGood2015
Priority substancesGood2015
FluorantheneGood2015
Lead and Its CompoundsGood2015
Nickel and Its CompoundsGood2015
OctylphenolGood2015
TrichloromethaneGood2015
Other PollutantsDoes not require assessment2015

Protected areas

PA NameIdDirectiveMore information
Porthleven SandsUK29800Bathing Water Directive
The LizardUK0012799Special Area of ConservationNatural England
Lizard PointUK0030374Special Area of ConservationNatural England
Praa Sands WestUK30000Bathing Water Directive
Poldhu CoveUK29500Bathing Water Directive
Lands End And Cape BankUK0030375Special Area of ConservationNatural England
Polurrian CoveUK29400Bathing Water Directive
Church CoveUK29501Bathing Water Directive
Praa Sands EastUK29900Bathing Water Directive
PorthcurnoUK30600Bathing Water Directive
PerranuthnoeUK30100Bathing Water 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 SiteCycle 1Cycle 2Cycle 3
MOUNTS BAY OFF PORTH CURNO 8221492220132015, 2016
MOUNTS BAY OFF CUDDEN POINT 8211486520132015, 2016
MOUNTS BAY OFF POLLURIAN COVE 8191499420132015, 2016
250M FROM PORTHLEVEN STW SURFACE BOIL 820148602015, 2016

Downstream water bodies