MEME A SAINT-MARTIN-DU-VIEUX-BELLEME, paramètre Nitrates
mg(NO3)/L
20/03/19
18
21/05/19
19
23/07/19
17
22/08/19
16
19/09/19
25
20/11/19
19
20/07/22
16
23/08/22
15
20/09/22
18
16/11/22
11
21/03/23
15
09/05/23
6
27/09/23
23