Little Hallingbury Brook Water Body

Poor ecological status

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Attributes

  • Water Body IDGB106038033250
  • Water Body TypeRiver
  • Hydromorphological designationnot designated artificial or heavily modified
  • NGRTL5038217057
  • Catchment area1109.26 ha
  • Length3.266 km
  • Catchment area11.093 km2
  • Surveillance Water BodyNo

Classifications

Classification Item2019
EcologicalPoor
Biological quality elementsPoor
InvertebratesGood
Macrophytes and Phytobenthos CombinedPoor
Macrophytes Sub ElementPoor
Physico-chemical quality elementsModerate
Ammonia (Phys-Chem)High
Dissolved oxygenHigh
PhosphateModerate
TemperatureHigh
pHHigh
Hydromorphological Supporting ElementsSupports good
Hydrological RegimeSupports good
MorphologySupports good
Specific pollutantsHigh
TriclosanHigh
ChemicalFail
Priority hazardous substancesFail
Benzo(a)pyreneGood
Benzo(b)fluorantheneGood
Benzo(g-h-i)peryleneGood
Benzo(k)fluorantheneGood
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

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
RNAGDiffuse sourceOther (not in list, must add details in comments)Agriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGPhysical modificationLand use - arableAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourceTransport DrainageUrban and transportPhosphateDetails
RNAGPoint sourceFarm/site infrastructureAgriculture and rural land managementMacrophytes and Phytobenthos CombinedDetails
RNAGPoint sourceFarm/site infrastructureAgriculture and rural land managementPhosphateDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGDiffuse sourceOther (not in list, must add details in comments)Agriculture and rural land managementPhosphateDetails

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 management1000020
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
Total1000020

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 RegimeSupports good2015
Supporting elements (Surface Water)Not assessed2015
Specific pollutantsHigh2015
TriclosanHigh2015
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
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
LEE NVZS443Nitrates Directive
LeeSWSGZ4006Safeguard Zone

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
STORT AT SAWBRIDGEWORTH PLER01512010, 2009
STORT AT BURNT MILL PLER01442010, 2009
LT HALLINGBURY BROOK AT GRINSTEAD LANE PLER06432013, 2014, 20122013, 2016, 2019, 2015, 20142019
STORT D/S OF RYE MEADS QUARRY PLER04542009
STORT AT SPELLBROOK WEIR PLER01522010, 2009
STORT AT ROYDON PLER01492010, 2009
154089 1540892012, 2013, 2014, 20112015, 2016, 2014
STORT ABOVE ROYDON AT BRIGGENS PLER02572010, 2009
160626 16062620142014, 2016, 2019, 20152019

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