LE BLANC A LES HERBIERS, paramètre Nitrates
mg(NO3)/L
30/03/20
25
23/04/20
15
20/05/20
9.7
29/06/20
4.8
30/10/20
22
01/11/20
22
23/12/20
27
18/01/21
25
09/02/21
24
08/03/21
22
15/04/21
19
10/05/21
9.9
07/06/21
5.3
12/07/21
7.2
16/08/21
4.2
11/10/21
6.3
08/11/21
9.6
06/12/21
14