Rainford Brook Water Body
Moderate ecological status
Get Rainford Brook data
Attributes
- Water Body IDGB112069061240
- Water Body TypeRiver
- Hydromorphological designationheavily modified
- NGRSJ5011298015
- Catchment area34.231 km2
- Surveillance Water BodyNo
- Length9.228 km
- Catchment area3423.089 ha
Classifications
Classification Item | 2019 | 2022 |
---|---|---|
Ecological | Moderate | Moderate |
Biological quality elements | Poor | Poor |
Fish | Poor | Poor |
Invertebrates | Moderate | Moderate |
Macrophytes and Phytobenthos Combined | Good | Good |
Macrophytes Sub Element | Moderate | Moderate |
Phytobenthos Sub Element | Good | Good |
Physico-chemical quality elements | Moderate | Moderate |
Ammonia (Phys-Chem) | Good | Good |
Biochemical Oxygen Demand (BOD) | High | |
Dissolved oxygen | Moderate | Good |
Phosphate | Moderate | Moderate |
Temperature | High | High |
pH | High | High |
Hydromorphological Supporting Elements | Supports good | Supports good |
Hydrological Regime | Supports good | High |
Supporting elements (Surface Water) | Moderate | Moderate |
Mitigation Measures Assessment | Moderate or less | Moderate or less |
Chemical | Fail | Does not require assessment |
Priority hazardous substances | Fail | Does not require assessment |
Benzo(a)pyrene | Good | |
Dioxins and dioxin-like compounds | Good | |
Heptachlor and cis-Heptachlor epoxide | Good | |
Hexabromocyclododecane (HBCDD) | Good | |
Hexachlorobenzene | Good | |
Hexachlorobutadiene | Good | |
Mercury and Its Compounds | Fail | |
Perfluorooctane sulphonate (PFOS) | Good | |
Polybrominated diphenyl ethers (PBDE) | Fail | |
Priority substances | Good | Does not require assessment |
Cypermethrin (Priority) | Good | |
Fluoranthene | Good | |
Other Pollutants | Does not require assessment | Does not require assessment |
Investigations into classification status
Classification Element | Cycle | Year | Status | Outcome |
---|---|---|---|---|
Macrophytes and Phytobenthos Combined | 2 | 2016 | Good | Quite 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 Type | SWMI | Activity | Category | Classification Element | More information |
---|---|---|---|---|---|
RNAG | Physical modification | Flood protection - structures | Sector under investigation | Invertebrates | Details |
RNAG | Physical modification | Other (not in list, must add details in comments) | Sector under investigation | Mitigation Measures Assessment | Details |
RNAG | Physical modification | Land drainage | Agriculture and rural land management | Invertebrates | Details |
RNAG | Physical modification | Other (not in list, must add details in comments) | Sector under investigation | Mitigation Measures Assessment | Details |
RNAG | Physical modification | Urbanisation - urban development | Urban and transport | Invertebrates | Details |
RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Phosphate | Details |
RNAG | Point source | Private Sewage Treatment | Urban and transport | Invertebrates | Details |
RNAG | Physical modification | Flood protection - structures | Sector under investigation | Macrophytes and Phytobenthos Combined | Details |
RNAG | Point source | Private Sewage Treatment | Domestic General Public | Phosphate | Details |
RNAG | Diffuse source | Poor soil management | Agriculture and rural land management | Invertebrates | Details |
RNAG | Physical modification | Urbanisation - urban development | Urban and transport | Macrophytes and Phytobenthos Combined | Details |
RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Phosphate | Details |
RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Fish | Details |
RNAG | Physical modification | Land drainage | Agriculture and rural land management | Macrophytes and Phytobenthos Combined | Details |
RNAG | Diffuse source | Poor soil management | Agriculture and rural land management | Phosphate | Details |
RNAG | Diffuse source | Poor soil management | Agriculture and rural land management | Fish | Details |
RNAG | Diffuse source | Unknown (pending investigation) | Agriculture and rural land management | Macrophytes and Phytobenthos Combined | Details |
RNAG | Suspect data | Not applicable | No sector responsible | Dissolved oxygen | Details |
RNAG | Physical modification | Barriers - ecological discontinuity | Industry | Fish | Details |
RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Macrophytes and Phytobenthos Combined | Details |
RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Invertebrates | Details |
RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Mercury and Its Compounds | Details |
RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Polybrominated diphenyl ethers (PBDE) | Details |
RNAG | Diffuse source | Transport Drainage | Urban and transport | Invertebrates | Details |
RNAG | Physical modification | Other (not in list, must add details in comments) | Sector under investigation | Mitigation Measures Assessment | Details |
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 issue | Physical modifications | Pollution from waste water | Pollution from towns, cities and transport | Changes to the natural flow and level of water | Invasive non-native species | Pollution from rural areas | Pollution from abandoned mines |
---|---|---|---|---|---|---|---|
Agriculture and rural land management | 0 | 0 | 0 | 0 | 0 | 6 | 0 |
Industry | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Mining and quarrying | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Navigation | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Urban and transport | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Water Industry | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Local & central government | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Domestic general public | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Recreation | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Waste treatment and disposal | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Other | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
No sector responsible | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Sector under investigation | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
Total | 4 | 0 | 1 | 0 | 0 | 6 | 0 |
Objectives
Classification Item | Status | Year | Reasons |
---|---|---|---|
Ecological | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Biological quality elements | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Fish | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Invertebrates | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Macrophytes and Phytobenthos Combined | Good | 2015 | |
Physico-chemical quality elements | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Ammonia (Phys-Chem) | Good | 2015 | |
Dissolved oxygen | Good | 2015 | |
Phosphate | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Temperature | Good | 2015 | |
pH | Good | 2015 | |
Hydromorphological Supporting Elements | Supports good | 2015 | |
Hydrological Regime | Supports good | 2015 | |
Supporting elements (Surface Water) | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Mitigation Measures Assessment | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
Specific pollutants | Not assessed | 2015 | |
Chemical | Good | 2063 | Natural conditions: Chemical status recovery time |
Priority hazardous substances | Good | 2063 | Natural conditions: Chemical status recovery time |
Benzo(a)pyrene | Good | 2015 | |
Dioxins and dioxin-like compounds | Good | 2015 | |
Heptachlor and cis-Heptachlor epoxide | Good | 2015 | |
Hexabromocyclododecane (HBCDD) | Good | 2015 | |
Hexachlorobenzene | Good | 2015 | |
Hexachlorobutadiene | Good | 2015 | |
Mercury and Its Compounds | Good | 2040 | Natural conditions: Chemical status recovery time |
Perfluorooctane sulphonate (PFOS) | Good | 2015 | |
Polybrominated diphenyl ethers (PBDE) | Good | 2063 | Natural conditions: Chemical status recovery time |
Priority substances | Good | 2015 | |
Cypermethrin (Priority) | Good | 2015 | |
Fluoranthene | Good | 2015 | |
Other Pollutants | Does not require assessment | 2015 |
Protected areas
PA Name | Id | Directive | More information |
---|---|---|---|
Sankey Brook (Black Bk to Mersey) NVZ | S639 | Nitrates 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.