Folly Brook and Salteye Brook. Water Body

Moderate ecological status

Attributes

  • Water Body IDGB112069061430
  • Water Body TypeRiver
  • Hydromorphological designationheavily modified
  • NGRSJ7539398859
  • Catchment area2379.77 ha
  • Length5.865 km
  • Catchment area23.798 km2
  • Surveillance Water BodyNo

Classifications

Classification Item20192022
EcologicalModerateModerate
Biological quality elementsPoorPoor
FishGoodGood
InvertebratesPoorPoor
Macrophytes and Phytobenthos Combined
Macrophytes Sub ElementBadBad
Physico-chemical quality elementsModerateModerate
Acid Neutralising CapacityHighHigh
Ammonia (Phys-Chem)ModeratePoor
Biochemical Oxygen Demand (BOD)BadPoor
Dissolved oxygenHighHigh
PhosphateGoodGood
TemperatureHighHigh
pHHighHigh
Hydromorphological Supporting ElementsSupports goodSupports good
Hydrological RegimeSupports goodSupports good
Supporting elements (Surface Water)ModerateModerate
Mitigation Measures AssessmentModerate or lessModerate or less
Specific pollutantsHighHigh
CopperHighHigh
ManganeseHighHigh
PermethrinHighHigh
TriclosanHighHigh
ZincHighHigh
ChemicalFailDoes not require assessment
Priority hazardous substancesFailDoes not require assessment
AnthraceneGood
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)Fail
Polybrominated diphenyl ethers (PBDE)Fail
Tributyltin CompoundsGood
Priority substancesFailDoes not require assessment
Cypermethrin (Priority)Fail
FluorantheneGood
NapthaleneGood
Other PollutantsDoes not require assessmentDoes not require assessment

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

Investigations into classification status

Classification ElementCycleYearStatusOutcome
Ammonia (Phys-Chem)22016GoodQuite certain there is a problem
Phosphate22016GoodQuite 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
RNAGUnknown (pending investigation)Unknown (pending investigation)Sector under investigationPerfluorooctane sulphonate (PFOS)Details
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsiblePolybrominated diphenyl ethers (PBDE)Details
RNAGPoint sourceSewage discharge (intermittent)Water IndustryInvertebratesDetails
RFDMonitoring Site Changed (RFD only)Not applicableNo sector responsibleBiochemical Oxygen Demand (BOD)Details
RNAGDiffuse sourceContaminated landUrban and transportInvertebratesDetails
RFDMonitoring Site Changed (RFD only)Not applicableNo sector responsibleAmmonia (Phys-Chem)Details
RNAGDiffuse sourceContaminated landUrban and transportAmmonia (Phys-Chem)Details
RNAGPhysical modificationOther (not in list, must add details in comments)Urban and transportMitigation Measures AssessmentDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryAmmonia (Phys-Chem)Details
RNAGPoint sourceSewage discharge (continuous)Water IndustryPhosphateDetails
RNAGmeasures delivered to address reason, awaiting recoveryNot applicableNo sector responsibleMercury and Its CompoundsDetails
RNAGPoint sourceSewage discharge (continuous)Water IndustryInvertebratesDetails
RNAGDiffuse sourceUrbanisation - urban developmentUrban and transportInvertebratesDetails
RNAGDiffuse sourceTransport DrainageUrban and transportInvertebratesDetails
RNAGPoint sourceSewage discharge (intermittent)Water IndustryInvertebratesDetails

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 Industry0400000
Local & central government0000000
Domestic general public0000000
Recreation0000000
Waste treatment and disposal0000000
Other0000000
No sector responsible0000000
Sector under investigation0000000
Total1400000

Objectives

Classification ItemStatusYearReasons
EcologicalGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Biological quality elementsGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
FishGood2015
InvertebratesGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Macrophytes and Phytobenthos CombinedNot assessed2015Disproportionately expensive: Disproportionate burdens
Physico-chemical quality elementsGood2015
Acid Neutralising CapacityGood2015
Ammonia (Phys-Chem)Good2015
Dissolved oxygenGood2015
PhosphateGood2015
TemperatureGood2015
pHGood2015
Hydromorphological Supporting ElementsSupports good2015
Hydrological RegimeSupports good2015
Supporting elements (Surface Water)Good2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Mitigation Measures AssessmentGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Specific pollutantsHigh2015
CopperHigh2015
ManganeseHigh2015
PermethrinHigh2015
TriclosanHigh2015
ZincHigh2015
ChemicalGood2063Disproportionately expensive: Disproportionate burdens;
Natural conditions: Chemical status recovery time;
Technically infeasible: No known technical solution is available
Priority hazardous substancesGood2063Natural conditions: Chemical status recovery time;
Technically infeasible: No known technical solution is available
AnthraceneGood2015
Benzo (b) and (k) fluorantheneGood2015
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)Good2039Technically infeasible: No known technical solution is available
Polybrominated diphenyl ethers (PBDE)Good2063Natural conditions: Chemical status recovery time
Tributyltin CompoundsGood2015
Priority substancesGood2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
Cypermethrin (Priority)Good2027 - Low confidenceDisproportionately expensive: Disproportionate burdens
FluorantheneGood2015
NapthaleneGood2015
Other PollutantsDoes not require assessment2015

Protected areas

No data to show

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
SALTEYE BROOK ABOVE CONFLUENCE WITH MSC 8800243920192019, 2022
WORSLEY BRK ABOVE LIVERPOOL ROAD BARTON 880024372009, 2013, 2011, 2014, 2012, 20102016, 2019, 2015, 2013, 20142019, 2022
FOLLY BROOK U/S OF WORSLEY BROOK 880024342009, 2013, 2014, 20122016, 2019, 2015, 2013, 20142019
69174 691742014, 20092014, 2015, 2016
66105 661052014, 20092014, 2016, 2015
MERSEY/SALTEYE BROOK/MRSE05/ 539862019, 2015, 20162019
68306 6830620092015, 2016

Upstream water bodies