translate English to French: The P response in the Central Basin offshore has been more modest because the basin is larger and nutrient loads were relatively smaller as the majority of controllable municipal sewage discharges are located in the West Basin.
C’est dans ce bassin que les progrès les plus importants ont été enregistrés, la concentration de phosphore dans l’eau y passant de 40 µg/L à environ 20 µg/L.