RAU DE L'ETANG PETREAU A BOUILLE-LORETZ, paramètre Nitrates
mg(NO3)/L
03/02/16
13.2
11/04/16
10.6
16/06/16
9.3
10/10/16
9.5
16/12/16
45.2
22/02/22
4.8
20/04/22
1.6