Irk (Wince to Irwell) Water Body
Moderate ecological status
Get Irk (Wince to Irwell) data
Attributes
- Water Body IDGB112069061131
- Water Body TypeRiver
- Hydromorphological designationheavily modified
- NGRSD8388703156
- Catchment area30.975 km2
- Surveillance Water BodyNo
- Length17.854 km
- Catchment area3097.52 ha
Classifications
| Classification Item | 2019 |
|---|---|
| Ecological | Moderate |
| Biological quality elements | Poor |
| Invertebrates | Poor |
| Physico-chemical quality elements | Moderate |
| Acid Neutralising Capacity | High |
| Ammonia (Phys-Chem) | Good |
| Biochemical Oxygen Demand (BOD) | High |
| Dissolved oxygen | High |
| Phosphate | Moderate |
| Temperature | High |
| pH | High |
| Supporting elements (Surface Water) | Moderate |
| Mitigation Measures Assessment | Moderate or less |
| Specific pollutants | High |
| Copper | High |
| Iron | High |
| Manganese | High |
| Triclosan | High |
| Zinc | High |
| Chemical | Fail |
| Priority hazardous substances | Fail |
| Benzo(a)pyrene | Good |
| Cadmium and Its Compounds | 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 |
| Nonylphenol | Good |
| Perfluorooctane sulphonate (PFOS) | Fail |
| Polybrominated diphenyl ethers (PBDE) | Fail |
| Priority substances | Fail |
| Cypermethrin (Priority) | Fail |
| Fluoranthene | Good |
| Lead and Its Compounds | Good |
| Nickel and Its Compounds | Good |
| Other Pollutants | Does not require assessment |
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 Type | SWMI | Activity | Category | Classification Element | More information |
|---|---|---|---|---|---|
| RNAG | Point source | Sewage discharge (intermittent) | Water Industry | Invertebrates | Details |
| RNAG | Physical modification | Other (not in list, must add details in comments) | Urban and transport | Mitigation Measures Assessment | Details |
| RNAG | Point source | Sewage discharge (continuous) | Water Industry | Invertebrates | Details |
| RNAG | Physical modification | Other (not in list, must add details in comments) | Local and Central Government | Mitigation Measures Assessment | Details |
| RNAG | Point source | Misconnections | Domestic General Public | Invertebrates | Details |
| RNAG | Physical modification | Other (not in list, must add details in comments) | Water Industry | Mitigation Measures Assessment | Details |
| RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Phosphate | Details |
| RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Ammonia (Phys-Chem) | Details |
| RNAG | Point source | Sewage discharge (continuous) | Water Industry | Phosphate | Details |
| RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Polybrominated diphenyl ethers (PBDE) | Details |
| RNAG | Point source | Sewage discharge (continuous) | Water Industry | Ammonia (Phys-Chem) | Details |
| RNAG | Diffuse source | Urbanisation - urban development | Urban and transport | Invertebrates | Details |
| RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Mercury and Its Compounds | Details |
| RNAG | Diffuse source | Riparian/in-river activities (inc bankside erosion) | Agriculture and rural land management | Ammonia (Phys-Chem) | Details |
| RNAG | Point source | Sewage discharge (intermittent) | Water Industry | Invertebrates | Details |
| RNAG | Point source | Sewage discharge (continuous) | Water Industry | Invertebrates | Details |
| RNAG | Diffuse source | Poor soil management | Agriculture and rural land management | Ammonia (Phys-Chem) | Details |
| RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Ammonia (Phys-Chem) | Details |
| RNAG | Point source | Sewage discharge (intermittent) | Water Industry | Ammonia (Phys-Chem) | Details |
| RNAG | Diffuse source | Poor Livestock Management | Agriculture and rural land management | Ammonia (Phys-Chem) | Details |
| RNAG | Diffuse source | Transport Drainage | Urban and transport | Ammonia (Phys-Chem) | Details |
| RNAG | Diffuse source | Contaminated land | Urban and transport | Ammonia (Phys-Chem) | Details |
| RNAG | Unknown (pending investigation) | Unknown (pending investigation) | Sector under investigation | Perfluorooctane sulphonate (PFOS) | Details |
| RNAG | Point source | Landfill leaching | Urban and transport | Invertebrates | 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 | 0 | 0 |
| Industry | 0 | 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 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| Water Industry | 1 | 5 | 0 | 0 | 0 | 0 | 0 |
| Local & central government | 1 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 3 | 5 | 0 | 0 | 0 | 0 | 0 |
Objectives
| Classification Item | Status | Year | Reasons |
|---|---|---|---|
| Ecological | Moderate | 2015 | Disproportionately expensive: Disproportionate burdens; Disproportionately expensive: Unfavourable balance of costs and benefits; Technically infeasible: No known technical solution is available |
| Biological quality elements | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens; Disproportionately expensive: Unfavourable balance of costs and benefits |
| Invertebrates | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens; Disproportionately expensive: Unfavourable balance of costs and benefits |
| Physico-chemical quality elements | Moderate | 2015 | Disproportionately expensive: Disproportionate burdens; Technically infeasible: No known technical solution is available |
| Acid Neutralising Capacity | Good | 2015 | |
| Ammonia (Phys-Chem) | Good | 2021 | Disproportionately expensive: Disproportionate burdens |
| Dissolved oxygen | Good | 2015 | |
| Phosphate | Moderate | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens; Technically infeasible: No known technical solution is available |
| Temperature | Good | 2015 | |
| pH | Good | 2015 | |
| Hydromorphological Supporting Elements | Not assessed | 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 | High | 2015 | |
| Copper | High | 2015 | |
| Iron | High | 2015 | |
| Manganese | High | 2015 | |
| Triclosan | High | 2015 | |
| Zinc | High | 2015 | |
| Chemical | Good | 2063 | Disproportionately expensive: Disproportionate burdens; Natural conditions: Chemical status recovery time; Technically infeasible: No known technical solution is available |
| Priority hazardous substances | Good | 2063 | Natural conditions: Chemical status recovery time; Technically infeasible: No known technical solution is available |
| Benzo(a)pyrene | Good | 2015 | |
| Cadmium and Its Compounds | 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 |
| Nonylphenol | Good | 2015 | |
| Perfluorooctane sulphonate (PFOS) | Good | 2039 | Technically infeasible: No known technical solution is available |
| Polybrominated diphenyl ethers (PBDE) | Good | 2063 | Natural conditions: Chemical status recovery time |
| Priority substances | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
| Cypermethrin (Priority) | Good | 2027 - Low confidence | Disproportionately expensive: Disproportionate burdens |
| Fluoranthene | Good | 2015 | |
| Lead and Its Compounds | Good | 2015 | |
| Nickel and Its Compounds | Good | 2015 | |
| Other Pollutants | Does not require assessment | 2015 |
Protected areas
| PA Name | Id | Directive | More information |
|---|---|---|---|
| River Irk (Moston Brook to River Irwell) NVZ | S638 | 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.