Mole (Hersham to R. Thames conf at East Molesey) Water Body
Moderate ecological status
Get Mole (Hersham to R. Thames conf at East Molesey) data
Attributes
- Water Body IDGB106039017622
- Water Body TypeRiver
- Hydromorphological designationheavily modified
- NGRTQ1550368221
- Surveillance Water BodyNo
- Length9.507 km
- Catchment area21.803 km2
- Catchment area2180.28 ha
Classifications
| Classification Item | 2019 |
|---|---|
| Ecological | Moderate |
| Biological quality elements | Good |
| Fish | Good |
| Invertebrates | High |
| Physico-chemical quality elements | Moderate |
| Acid Neutralising Capacity | High |
| Ammonia (Phys-Chem) | High |
| Dissolved oxygen | High |
| Phosphate | Poor |
| Temperature | High |
| pH | High |
| Hydromorphological Supporting Elements | Supports good |
| Hydrological Regime | Supports good |
| Supporting elements (Surface Water) | Moderate |
| Mitigation Measures Assessment | Moderate or less |
| Specific pollutants | High |
| Arsenic | High |
| Copper | High |
| Iron | High |
| Manganese | High |
| Permethrin | 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 |
| Hexachlorocyclohexane | Good |
| Mercury and Its Compounds | Fail |
| Perfluorooctane sulphonate (PFOS) | Fail |
| Polybrominated diphenyl ethers (PBDE) | Fail |
| Tributyltin Compounds | Good |
| Priority substances | Good |
| 1,2-dichloroethane | Good |
| Cypermethrin (Priority) | Good |
| Fluoranthene | Good |
| Lead and Its Compounds | Good |
| Nickel and Its Compounds | Good |
| Pentachlorophenol | Good |
| Trichlorobenzenes | Good |
| Trichloromethane | Good |
| Other Pollutants | Good |
| Aldrin, Dieldrin, Endrin & Isodrin | Good |
| Carbon Tetrachloride | Good |
| DDT Total | Good |
| Tetrachloroethylene | Good |
| Trichloroethylene | Good |
| para - para DDT | Good |
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 (continuous) | Water Industry | Phosphate | Details |
| RNAG | Unknown (pending investigation) | Unknown (pending investigation) | Sector under investigation | Perfluorooctane sulphonate (PFOS) | Details |
| RNAG | Physical modification | Other (not in list, must add details in comments) | Urban and transport | Mitigation Measures Assessment | Details |
| RNAG | Physical modification | Other (not in list, must add details in comments) | Local and Central Government | Mitigation Measures Assessment | Details |
| RNAG | Physical modification | Other (not in list, must add details in comments) | Recreation | Mitigation Measures Assessment | Details |
| RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Polybrominated diphenyl ethers (PBDE) | Details |
| RNAG | measures delivered to address reason, awaiting recovery | Not applicable | No sector responsible | Mercury and Its Compounds | 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 | 0 | 1 | 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 | 1 | 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 | 1 | 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 | 2015 | |
| Fish | Good | 2015 | |
| Invertebrates | Good | 2015 | |
| Physico-chemical quality elements | Moderate | 2015 | Disproportionately expensive: Disproportionate burdens; Disproportionately expensive: Unfavourable balance of costs and benefits; 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 | Poor | 2015 | Disproportionately expensive: Unfavourable balance of costs and benefits; Technically infeasible: No known technical solution is available |
| 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 | High | 2015 | |
| Arsenic | High | 2015 | |
| Copper | High | 2015 | |
| Iron | High | 2015 | |
| Manganese | High | 2015 | |
| Permethrin | High | 2015 | |
| Triclosan | High | 2015 | |
| Zinc | High | 2015 | |
| Chemical | Good | 2063 | 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 (b) and (k) fluoranthene | Good | 2015 | |
| Benzo (ghi) perelyene and indeno (123-cd) pyrene | Good | 2015 | |
| 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 | |
| Hexachlorocyclohexane | Good | 2015 | |
| Mercury and Its Compounds | Good | 2040 | Natural conditions: Chemical status recovery time |
| 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 |
| Tributyltin Compounds | Good | 2015 | |
| Priority substances | Good | 2015 | |
| 1,2-dichloroethane | Good | 2015 | |
| Cypermethrin (Priority) | Good | 2015 | |
| Fluoranthene | Good | 2015 | |
| Lead and Its Compounds | Good | 2015 | |
| Nickel and Its Compounds | Good | 2015 | |
| Pentachlorophenol | Good | 2015 | |
| Trichlorobenzenes | Good | 2015 | |
| Trichloromethane | Good | 2015 | |
| Other Pollutants | Good | 2015 | |
| Aldrin, Dieldrin, Endrin & Isodrin | Good | 2015 | |
| Carbon Tetrachloride | Good | 2015 | |
| DDT Total | Good | 2015 | |
| Tetrachloroethylene | Good | 2015 | |
| Trichloroethylene | Good | 2015 | |
| para - para DDT | Good | 2015 |
Protected areas
| PA Name | Id | Directive | More information |
|---|---|---|---|
| River Mole | UKENRI58 | Urban Waste Water Treatment Directive |