Countries Less than 0.8 mg NO₃-N/l (%) 0.8-2.0 mg NO₃-N/l (%) 2.0-3.6 mg NO₃-N/l (%) 3.6-5.6 mg NO₃-N/l (%) 5.6-11.3 mg NO₃-N/l (%) Greater than 11.3 mg NO₃-N/l (%)
Switzerland (125) 30.4 28.8 12 18.4 10.4 0
Sweden (128) 77.8 13.5 4.8 3.2 0.8 0
Spain (2,893) 44.3 30.7 12.6 5.9 5.2 1.2
Slovenia (17) 30 70 0 0 0 0
Slovakia (16) 0 75 25 0 0 0
Serbia (36) 37.1 62.9 0 0 0 0
Romania (121) 53.3 39.2 7.5 0 0 0
Portugal (126) 56.7 29.1 8.7 4.7 0.8 0
Poland (2,961) 52.3 27.6 13.2 3.7 2.7 0.5
Norway (87) 100 0 0 0 0 0
North Macedonia (19) 38.9 61.1 0 0 0 0
Lithuania (330) 20.8 29.6 19 14.3 14.7 1.6
Latvia (23) 47.1 29.4 14.7 5.9 2.9 0
Kosovo* (47) 44.7 48.9 6.4 0 0 0
Italy (1,959) 35.7 34 18.6 8 3.1 0.7
Ireland (182) 44 25.3 18.7 9.3 2.7 0
Iceland (3) 100 0 0 0 0 0
Germany (248) 6.5 24.2 48 19 2.4 0
France (1,542) 22.7 36.4 18.2 13.6 4.5 4.5
Finland (106) 88.3 10.7 1 0 0 0
Estonia (142) 39.9 32.9 16.2 5.2 5.8 0
Denmark (41) 0 15 47.5 35 2.5 0
Czechia (863) 7.3 25.8 32.4 21.6 12.4 0.5
Cyprus (25) 81.5 14.8 0 3.7 0 0
Croatia (48) 60.4 39.6 0 0 0 0
Belgium (109) 0.9 12.8 45 33 8.3 0
Austria (81) 34.6 35.8 23.5 6.2 0 0
Albania (26) 100 0 0 0 0 0