Pipp Brook Water Body

Poor ecological status

Attributes

  • Water Body IDGB106039017580
  • Water Body TypeRiver
  • Hydromorphological designationheavily modified
  • NGRTQ1326348171
  • Catchment area20.965 km2
  • Surveillance Water BodyNo
  • Length12.164 km
  • Catchment area2096.52 ha

Classifications

Classification Item20192022
EcologicalPoorPoor
Biological quality elementsPoorPoor
FishModerateGood
InvertebratesGoodGood
Macrophytes and Phytobenthos CombinedPoorPoor
Phytobenthos Sub ElementPoorPoor
Physico-chemical quality elementsModerateModerate
Ammonia (Phys-Chem)HighHigh
Dissolved oxygenHighHigh
PhosphateModerateModerate
TemperatureGoodGood
pHHighHigh
Hydromorphological Supporting ElementsSupports goodSupports good
Hydrological RegimeSupports goodSupports good
Supporting elements (Surface Water)ModerateModerate
Mitigation Measures AssessmentModerate or lessModerate or less
ChemicalFailDoes not require assessment
Priority hazardous substancesFailDoes not require assessment
Benzo(a)pyreneGood
Dioxins and dioxin-like compoundsGood
Heptachlor and cis-Heptachlor epoxideGood
Hexabromocyclododecane (HBCDD)Good
HexachlorobenzeneGood
HexachlorobutadieneGood
Mercury and Its CompoundsFail
Perfluorooctane sulphonate (PFOS)Good
Polybrominated diphenyl ethers (PBDE)Fail
Priority substancesGoodDoes not require assessment
Cypermethrin (Priority)Good
FluorantheneGood
Other PollutantsDoes not require assessmentDoes 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
RNAGPhysical modificationOther (not in list, must add details in comments)Urban and transportMitigation Measures AssessmentDetails
RNAGPoint sourceLeaking utility sewersWater IndustryMacrophytes and Phytobenthos CombinedDetails
RNAGPoint sourceMisconnectionsDomestic General PublicMacrophytes and Phytobenthos CombinedDetails
RNAGDiffuse sourcePoor Livestock ManagementAgriculture and rural land managementFishDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGPhysical modificationUrbanisation - urban developmentUrban and transportFishDetails
RFDHigh to Good deterioration, no action required (RFD only)Not applicableNo sector responsibleTemperatureDetails
RNAGPhysical modificationBarriers - ecological discontinuityOtherFishDetails
RNAGPoint sourceLeaking utility sewersWater IndustryPhosphateDetails
RNAGPoint sourceMisconnectionsDomestic General PublicPhosphateDetails
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 transport1000000
Water Industry0020000
Local & central government0000000
Domestic general public0020000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total1040000

Objectives

Classification ItemStatusYearReasons
EcologicalGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens;
Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use
Biological quality elementsModerate2015Disproportionately expensive: Disproportionate burdens;
Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use
FishModerate2015Good status prevented by A/HMWB designated use: Action to get biological element to good would have significant adverse impact on use
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 good2021Disproportionately expensive: Disproportionate burdens
Supporting elements (Surface Water)Good2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Mitigation Measures AssessmentGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
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 CompoundsGood2040Natural conditions: Chemical status recovery time
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
Leatherhead and ElmerG725Nitrates 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
RIVER MOLE/MOLE TRIBUTARIES/PIPP BROOK/PIXHAM PUMPING STATION/ 320122013, 2011, 2012, 2010, 2009
PIPP BROOK AT PIXHAM LANE, DORKING PMLR02322010, 2009, 2011, 20122019, 2015, 20162019
156258 1562582014, 20132016, 2014, 2015, 2013
RIVER MOLE/MOLE TRIBUTARIES/PIPP BROOK/SONDES PLACE FARM/ 224902013, 2011, 2014, 2012, 2010, 20092013, 2016, 2014, 2015
34758 347582009, 2014, 20102015, 2014, 2016
RIVER MOLE/MOLE TRIBUTARIES/PIPP BROOK/U/S PIXHAM PUMPING STATION/ 449842013, 20142013, 2016, 2014, 2019, 20152022, 2019
RIVER MOLE/MOLE TRIBUTARIES/PIPP BROOK/DEEPDENE STATION/ 319962013, 2011, 2012, 2010, 2009
RIVER MOLE/MOLE TRIBUTARIES/PIPP BROOK/SQUIRES FARM, PIPPBROOK/ 224922013, 2011, 2014, 2012, 2010, 20092013, 2016, 2014, 2019, 20152022, 2019
RIVER MOLE/MOLE TRIBUTARIES/PIPP BROOK/SONDES PLACE FARM DS BRIDGE/ 680922022

Upstream water bodies

    Downstream water bodies