Quality of rivers in relation to total phosphorus in Brittany

Total phosphorus concentrations at all Breton sites monitored from 1995 to 2023.

Sources: Naiades - OFB, OSUR - AELB, LYXEA - Dreal Bretagne.
Processing:
Environment Observatory in Brittany, 2024.

Go further: consult the regulatory context and methodology in the datavisualisation "Phosphorous materials in Breton rivers:
Analysis of annual trends since 1995 " by the EPO.