The Water Framework Directive is a piece of European legislation that states that all UK waterbodies (rivers, lakes, seas) must be in ‘good ecological status’ by 2027.

Current WFD Waterbody Classifications for Lower Lea Catchment taken from Catchment Data Explorer
Waterbody  Overall Waterbody Classification  Reasons For Failure  Hydromorphological Supporting Elements  Supporting Elements (Surface Water Chemical
 Lee Navigation (Fieldes Weir to Enfield Lock)   Poor  Macrophytes and Phytobenthos Combined (Poor) Hydrological Regime Does Not Support Good Mitigation Measure Assessment (Moderate or Less) Tributyltin Compounts (Fail)
Phosphate (Poor)  Morphology Not Assessed
 Small River Lee (and tributaries)   Moderate Invertebrates (Moderate)   Hydrological Regime Supports Good Not Assessed  
Macrophytes and Phytobenthos Combined (Moderate) Morphology

Supports Good

Dissolved Oxygen (Moderate)
Phosphate (Poor)
Nazeing Brook Poor Invertebrates (Poor) Hydrological Regime High Not Assessed  
Macrophytes (Poor) Morphology Supports Good
Macrophytes and Phytobenthos Combined (Moderate)
Phosphate (Bad)
Turkey Brook and Cuffley Brook Poor Macrophytes and Phytobenthos Combined (Poor) Hydrological Regime Supports Good Not Assessed  
Phosphate (Poor) Morphology Supports Good
Cobbins Brook Poor Invertebrates (Moderate) Hydrological Regime High Not Assessed  
Macrophytes and Phytobenthos Combined (Poor) Morphology Supports Good
Phosphate (Poor)

Design by LTD Design Consultants and build by Garganey Consulting.