Wroxall Stream Water Body

Poor ecological status

Attributes

  • Water Body IDGB107101006210
  • Water Body TypeRiver
  • Hydromorphological designationnot designated artificial or heavily modified
  • NGRSZ5500681946
  • Catchment area1703.7 ha
  • Length7.723 km
  • Catchment area17.037 km2
  • Surveillance Water BodyNo

Classifications

Classification Item2019
EcologicalPoor
Biological quality elementsPoor
InvertebratesGood
Macrophytes and Phytobenthos CombinedPoor
Macrophytes Sub ElementPoor
Phytobenthos Sub ElementGood
Physico-chemical quality elementsModerate
Ammonia (Phys-Chem)High
Dissolved oxygenHigh
PhosphatePoor
TemperatureHigh
pHHigh
Hydromorphological Supporting ElementsSupports good
Hydrological RegimeDoes not support good
MorphologySupports good
ChemicalFail
Priority hazardous substancesFail
Benzo(a)pyreneGood
Dioxins and dioxin-like compoundsGood
Heptachlor and cis-Heptachlor epoxideGood
Hexabromocyclododecane (HBCDD)Good
HexachlorobenzeneGood
HexachlorobutadieneGood
Mercury and Its CompoundsGood
Perfluorooctane sulphonate (PFOS)Good
Polybrominated diphenyl ethers (PBDE)Fail
Priority substancesGood
Cypermethrin (Priority)Good
FluorantheneGood
Other PollutantsDoes not require assessment

Why do all water bodies have a chemical status of fail?

Investigations into classification status

Classification ElementCycleYearStatusOutcome
Macrophytes and Phytobenthos Combined22015PoorVery certain there is a problem
Hydrological Regime22015Does Not Support GoodUncertain there is a problem
Phosphate22015PoorVery certain 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 TypeSWMIActivityCategoryClassification ElementMore information
RNAGPoint sourcePrivate Sewage TreatmentDomestic General PublicMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourceTransport DrainageUrban and transportMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourcePoor nutrient managementAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryMacrophytes and Phytobenthos CombinedDetails
RNAGInvasive non-native speciesOther riparian plantsNo sector responsibleMacrophytes and Phytobenthos CombinedDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGFlowNo further action (Flow is below the EFI but NOT causing an ecological failure)No sector responsibleHydrological RegimeDetails
RNAGFlowGroundwater abstractionWater IndustryHydrological RegimeDetails
RNAGDiffuse sourcePoor soil managementAgriculture and rural land managementPhosphateDetails
RNAGDiffuse sourcePoor soil managementAgriculture and rural land managementPhosphateDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryPhosphateDetails
RNAGPoint sourceMisconnectionsDomestic General PublicPhosphateDetails
RNAGPoint sourceSewage discharge (intermittent)Water IndustryPhosphateDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryPhosphateDetails

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 management0000010
Industry0000000
Mining and quarrying0000000
Navigation0000000
Urban and transport0000000
Water Industry0400000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000100
Sector under investigation0000000
Total0400110

Objectives

Classification ItemStatusYearReasons
EcologicalGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Biological quality elementsGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
InvertebratesGood2015
Macrophytes and Phytobenthos CombinedGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Physico-chemical quality elementsGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
PhosphateGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsSupports good2015
Hydrological RegimeDoes not support good2015Disproportionately expensive: Unfavourable balance of costs and benefits
Supporting elements (Surface Water)Not assessed2015
Specific pollutantsNot assessed2015
ChemicalGood2063Natural conditions: Chemical status recovery time
Priority hazardous substancesGood2063Natural conditions: Chemical status recovery time
Benzo(a)pyreneGood2015
Dioxins and dioxin-like compoundsGood2015
Heptachlor and cis-Heptachlor epoxideGood2015
Hexabromocyclododecane (HBCDD)Good2015
HexachlorobenzeneGood2015
HexachlorobutadieneGood2015
Mercury and Its CompoundsGood2015
Perfluorooctane sulphonate (PFOS)Good2015
Polybrominated diphenyl ethers (PBDE)Good2063Natural conditions: Chemical status recovery time
Priority substancesGood2015
Cypermethrin (Priority)Good2015
FluorantheneGood2015
Other PollutantsDoes not require assessment2015

Protected areas

PA NameIdDirectiveMore information
Newtown harbour, Mediina Estuary and Eastern Yar Eutrophic NVZ (TraC)ET7Nitrates Directive
Eastern Yar (Lower)SWSGZ4318Safeguard Zone
Wroxall Stream NVZS531Nitrates Directive
Isle Of Wight DownsUK0016254Special Area of ConservationNatural 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 SiteCycle 1Cycle 2Cycle 3
WROXALL STREAM BATHING BOURNE Y00044212014, 20092015, 2014, 2016, 20192019
WROXALL STREAM UPSTREAM OF STW Y00044242014, 20092015, 2014, 2016, 20192019
42804 428042010, 2011, 2014, 20092015, 2016, 2014
42805 428052010, 2011, 2014, 20092015, 2016, 2014, 2013

Upstream water bodies

    Downstream water bodies