Ouzel DS Caldecote Mill Water Body
Moderate ecological status
Get Ouzel DS Caldecote Mill data
Attributes
- Water Body IDGB105033037972
- Water Body TypeRiver
- Hydromorphological designationnot designated artificial or heavily modified
- NGRSP8793743211
- Catchment area10.263 km2
- Surveillance Water BodyNo
- Length2.615 km
- Catchment area1026.34 ha
Classifications
Classification Item | 2019 |
---|---|
Ecological | Moderate |
Biological quality elements | Good |
Invertebrates | Good |
Physico-chemical quality elements | Moderate |
Ammonia (Phys-Chem) | High |
Dissolved oxygen | High |
Phosphate | Moderate |
Temperature | High |
pH | High |
Hydromorphological Supporting Elements | Supports good |
Hydrological Regime | Supports good |
Chemical | Fail |
Priority hazardous substances | Fail |
Anthracene | Good |
Benzo(a)pyrene | Good |
Benzo(b)fluoranthene | Good |
Benzo(g-h-i)perylene | Good |
Benzo(k)fluoranthene | Good |
Dioxins and dioxin-like compounds | Good |
Heptachlor and cis-Heptachlor epoxide | Good |
Hexabromocyclododecane (HBCDD) | Good |
Hexachlorobenzene | Good |
Hexachlorobutadiene | Good |
Mercury and Its Compounds | Good |
Perfluorooctane sulphonate (PFOS) | Fail |
Polybrominated diphenyl ethers (PBDE) | Fail |
Priority substances | Good |
Cypermethrin (Priority) | Good |
Fluoranthene | Good |
Other Pollutants | Does not require assessment |
Investigations into classification status
Classification Element | Cycle | Year | Status | Outcome |
---|---|---|---|---|
Phosphate | 2 | 2014 | Moderate | Very 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 | Unknown (pending investigation) | Unknown (pending investigation) | Sector under investigation | Perfluorooctane sulphonate (PFOS) | 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 | Phosphate | Details |
RNAG | Diffuse source | Poor Livestock Management | Agriculture and rural land management | Phosphate | Details |
RNAG | Diffuse source | Poor nutrient management | Agriculture and rural land management | Phosphate | 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 | 1 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Water Industry | 0 | 1 | 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 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Total | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
Objectives
Classification Item | Status | Year | Reasons |
---|---|---|---|
Ecological | Moderate | 2015 | Disproportionately expensive: Unfavourable balance of costs and benefits; Technically infeasible: No known technical solution is available |
Biological quality elements | Good | 2015 | |
Invertebrates | Good | 2015 | |
Physico-chemical quality elements | Moderate | 2015 | Disproportionately expensive: Unfavourable balance of costs and benefits; Technically infeasible: No known technical solution is available |
Ammonia (Phys-Chem) | Good | 2015 | |
Dissolved oxygen | Good | 2015 | |
Phosphate | Moderate | 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) | Not assessed | 2015 | |
Specific pollutants | Not assessed | 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 |
Anthracene | Good | 2015 | |
Benzo(a)pyrene | Good | 2015 | |
Benzo(b)fluoranthene | Good | 2015 | |
Benzo(g-h-i)perylene | Good | 2015 | |
Benzo(k)fluoranthene | 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 | 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 | 2015 | |
Cypermethrin (Priority) | Good | 2015 | |
Fluoranthene | Good | 2015 | |
Other Pollutants | Does not require assessment | 2015 |
Protected areas
PA Name | Id | Directive | More information |
---|---|---|---|
River Great Ouse | UKENRI61 | Urban Waste Water Treatment Directive | |
Headwaters of the Great Ouse | UKENRI61_&_UKENRI83b | Urban Waste Water Treatment Directive | |
Great Ouse NVZ | S391 | Nitrates Directive | |
Bedford Great Oolite | G74 | 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.