EISCH - amont Mersch - 2016
Etat écologique
| Paramètres biologiques | Résultat | Etat | Valeurs seuils | Info. |
|---|---|---|---|---|
| Cote Macrozoobenthos Indice macro-invertébrés (IBGN) | 13 | bon | 12 - 16 |  |
| IPR Poissons Indice poissons Rivière (IPR) | |
|||
| IPS diatomées Indice diatomées (IBD?) | 18.2 | très bon | 16,81 | |
| IBMR macrophythes Indice macrophytes (IBMR) | 11.2 | très bon | 9,59 | |
| Moyenne | Valeur seuil bon état écologique |
Maximum mesuré | Valeur seuil concentration maximale admissible | Unité | Nombre d'échantillons | |
|---|---|---|---|---|---|---|
| Physico-chimie | Moyenne | Valeur seuil bon état écologique |
Maximum mesuré | Valeur seuil concentration maximale admissible | Unité | Nombre d'échantillons |
| Turbidité | 29.8 | / | 160 | / | FNU | 13 |
| Température de l'eau | 9.6 | 20 | 17 | / | °C | 13 |
| Conductibilité électrique 20°C | 532 | / | 618 | / | µS/cm | 13 |
| Oxygène dissous | 10.6 | >7 | 13 | / | mg/l | 13 |
| Saturation en oxygène | 94 | / | 99 | / | % | 13 |
| Demande biochim. en oxy. (DbO-5) | 1.2 | / | 3.9 | / | mg/l | 13 |
| Phosphate-ortho-P | 0.14 | 0.07 | 0.2 | / | mg/l | 13 |
| Phosphore total-P | 0.22 | 0.1 | 0.52 | / | mg/l | 13 |
| Ammonium-NH4 | 0.08 | 0.13 | 0.36 | / | mg/l | 13 |
| Nitrites-NO2 | 0.09 | 0.16 | 0.26 | / | mg/l | 13 |
| Nitrates-NO3 | 21 | 25 | 27 | / | mg/l | 13 |
| Sodium-Na | 18.1 | / | 25 | / | mg/l | 13 |
| Calcium-Ca | 95.4 | / | 112 | / | mg/l | 13 |
| Magnésium-Mg | 5.9 | / | 7 | / | mg/l | 13 |
| Chlorures-Cl | 27.8 | 200 | 41 | / | mg/l | 13 |
| Sulfates-SO4 | 46.3 | / | 59 | / | mg/l | 13 |
| TOC | 4.2 | 7 | 11 | / | mg/l | 13 |
| Chlorophylle-a | 6.5 | / | 19.7 | / | ug/l | 13 |
| Potassium-K | 3.2 | / | 5.3 | / | mg/l | 13 |
| Dureté carbonatée | 20.2 | / | 23.7 | / | d°fr | 13 |
| Matière en suspension | 20.8 | / | 120 | / | mg/l | 13 |
| Polluants organiques spécifiques | Moyenne | Valeur seuil bon état écologique |
Maximum mesuré | Valeur seuil concentration maximale admissible | Unité | Nombre d'échantillons |
| Arsenic dissous | 0.0008 | 0.00083 | 0.001 | / | mg/l | 13 |
| Chrome dissous | <0.001 | 0.018 | <0.001 | / | mg/l | 13 |
| Cobalt dissous | <0.0001 | 0.0003 | 0.0003 | / | mg/l | 13 |
| Cuivre dissous | <0.001 | 0.0014 | 0.0019 | / | mg/l | 13 |
| Sélénium dissous | <0.0005 | 0.00095 | 0.003 | / | mg/l | 13 |
| Zinc dissous | <0.005 | 0.0078 | <0.005 | / | mg/l | 13 |
| 2,4-D | <25 | 2200 | <25 | / | ng/l | 13 |
| MCPA | <25 | 500 | 10 | / | ng/l | 13 |
| Chlortoluron | <25 | 100 | <25 | / | ng/l | 13 |
| Diflufenican | <25 | 10 | <25 | / | ng/l | 13 |
| Flufenacet | <25 | 40 | 82 | / | ng/l | 13 |
| Glyphosate | 28 | 28000 | 161 | / | ng/l | 26 |
| Metazachlor | <25 | 19 | <25 | / | ng/l | 13 |
| Metazachlor-ESA | 123 | 3000 | 231 | / | ng/l | 13 |
| Metazachlor-OXA | 40 | 3000 | 152 | / | ng/l | 13 |
| Metolachlor | <25 | 70 | 36 | / | ng/l | 13 |
| Metolachlor ESA | 80 | 3000 | 176 | / | ng/l | 13 |
| Metolachlor OXA | 26 | 3000 | 117 | / | ng/l | 13 |
| Nicosulfuron | <25 | 35 | <25 | / | ng/l | 5 |
| Tebuconazole | <25 | 1000 | 84 | / | ng/l | 13 |
| Terbuthylazine | 26 | 60 | 137 | / | ng/l | 13 |
| Carbamazepine | <25 | 2500 | 36 | / | ng/l | 13 |
| Etat chimique | ||||||
| Substances prioritaires et substances dangereuses et prioritaires | Moyenne | Valeur seuil bon état écologique | Maximum mesuré | Valeur seuil concentration maximale admissible | Unité | Nombre d'échantillons |
| Alachlore | <0.01 | 0.3 | <0.01 | 0.7 | µg/l | 13 |
| Anthracène | 0.0078 | 0.1 | 0.024 | 0.1 | ug/l | 13 |
| Atrazine | <25 | 600 | <25 | 2000 | ng/l | 13 |
| Benzène | <1 | 10 | <1 | 50 | ug/l | 13 |
| Diphényléthers bromés | <0.005 | / | <0.005 | 0.14 | µg/l | 13 |
| Cadmium dissous | <0.0001 | 8.0E-5 | <0.0001 | 0.00045 | mg/l | 13 |
| Chloroalcanes C10-13 | <5 | 0.4 | <5 | 1.4 | µg/l | 13 |
| Chlorfenvinphos | <0.02 | 0.1 | <0.02 | 0.3 | µg/l | 13 |
| Chlorpyrifos | <0.01 | 0.03 | <0.01 | 0.1 | µg/l | 13 |
| 1,2-Dichloroéthane | <2 | 10 | <2 | / | ug/l | 13 |
| Dichlorométhane | <1 | 20 | <1 | / | ug/l | 13 |
| Di(2-ethylhexyl)phtalate (DEHP) | <0.4 | 1.3 | <0.4 | / | µg/l | 13 |
| Diuron | <25 | 200 | <25 | 1800 | ng/l | 13 |
| Endosulfan | <0.01 | 0.005 | <0.01 | 0.01 | µg/l | 13 |
| Fluoranthène | 0.027 | 0.0063 | 0.103 | 0.12 | ug/l | 13 |
| Hexachlorobenzène | <0.01 | / | <0.01 | 0.05 | µg/l | 13 |
| Hexachlorobutadiène | <0.01 | / | <0.01 | 0.6 | µg/l | 13 |
| Hexachlorocyclohexane | <0.01 | 0.02 | <0.01 | 0.04 | µg/l | 13 |
| Isoproturon | <25 | 300 | 58 | 1000 | ng/l | 13 |
| Plomb dissous | <0.0005 | 0.0012 | <0.0005 | / | mg/l | 13 |
| Mercure | <0.005 | / | <0.005 | 0.07 | ug/l | 13 |
| Naphtalène | <0.02 | 2 | <0.02 | 130 | ug/l | 13 |
| Nickel dissous | <0.005 | 0.004 | <0.005 | / | mg/l | 13 |
| Nonylphénol | <0.1 | 0.3 | 0.16 | 2 | µg/l | 13 |
| Octylphénol | <0.01 | 0.1 | <0.01 | / | µg/l | 13 |
| Pentachlorobenzène | <0.01 | 0.007 | <0.01 | / | µg/l | 13 |
| Pentachlorophénol | <0.01 | 0.4 | <0.01 | 1 | µg/l | 13 |
| Benzo(a)pyrène | 0.0177 | 0.00017 | 0.076 | 0.27 | ug/l | 13 |
| Benzo(b)fluoranthène | 0.0214 | / | 0.09 | 0.017 | ug/l | 13 |
| Benzo(k)fluoranthène | 0.0108 | / | 0.048 | 0.017 | ug/l | 13 |
| Benzo(ghi)pérylène | 0.0112 | / | 0.032 | 0.0082 | ug/l | 13 |
| Simazine | <25 | 1000 | <25 | 4000 | ng/l | 13 |
| Tributylétain | <6E-05 | 0.0002 | <6E-05 | 0.0015 | µg/l | 13 |
| Trichlorobenzènes | <0.01 | 0.4 | <0.01 | / | µg/l | 13 |
| Chloroforme | <1 | 2.5 | <1 | / | ug/l | 13 |
| Trifluraline | <0.01 | 0.03 | <0.01 | / | µg/l | 13 |
| Tétrachlorométhane | <1 | 12 | <1 | / | ug/l | 13 |
| Somme (Isodrine, Endrine, Dieldrine, Aldrine) | 0.02 | 0.01 | <0.01 | / | µg/l | 52 |
| DDT total | <0.01 | 0.025 | <0.01 | / | µg/l | 13 |
| para-para-DDT | <0.01 | 0.01 | <0.01 | / | µg/l | 13 |
| Tétrachloroéthylène | <1 | 10 | <1 | / | ug/l | 13 |
| Trichloroéthylène | <1 | 10 | <1 | / | ug/l | 13 |
| Dicofol | <0.01 | 0.0013 | <0.01 | / | µg/l | 13 |
| PFOS | <0.01 | 0.00065 | <0.01 | 36 | µg/l | 13 |
| Quinoxyfène | <25 | 0.15 | <25 | 2.7 | ng/l | 25 |
| Aclonifène | <0.02 | 0.12 | <0.02 | 0.12 | µg/l | 13 |
| Bifénox | <0.01 | 0.012 | <0.01 | 0.04 | µg/l | 13 |
| Cybutryne | <0.01 | 0.0025 | <0.01 | 0.016 | µg/l | 13 |
| Cyperméthrine | <0.02 | 8.0E-5 | <0.02 | 0.0006 | µg/l | 13 |
| Dichlorvos | <0.03 | 0.0006 | <0.03 | 0.0007 | µg/l | 13 |
| Hexabromocyclododécanes | <0.05 | 0.0016 | <0.05 | 0.5 | µg/l | 13 |
| Heptachlore et époxyde d'heptachlore | <0.01 | 2.0E-7 | <0.01 | 0.0003 | µg/l | 26 |
| Terbutryne | <0.02 | 0.065 | <0.02 | 0.34 | µg/l | 13 |