ORNE CHAMPENOISE à ETIVAL-LES-LE-MANS, paramètre Nitrates
mg(NO3)/L
14/02/17
34.9
13/04/17
34.3
26/06/17
38.3
21/08/17
37
24/10/17
30
18/12/17
30
14/02/19
39
10/04/19
33
19/06/19
38
12/08/19
39
22/10/19
27
10/12/19
34