| 0.2. 2 | 6-Dichlorobenzamide | “2 | 6-Dichlorobenzamide | also known as BAM or 2 | 6-DCBA | is a degradation product of plant protection products | primarily dichlobenil. It can also be formed from fluopicolide. Dichlobenil was used |
| 1 | Aclonifen | | | | | False | |
| 2 | Amidosulfuron | | | | | False | |
| 3 | AMPA | AMPA stands for aminomethylphosphonic acid. It is primarily known as a degradation product of glyphosate, but may also originate from other phosphonate-containing substances, such as certain cleaning or detergent additives. | Primarily via agriculture, glyphosate degradation, surface runoff, soil, sewage treatment works, wastewater and contaminated surface waters. AMPA can be relatively persistent and can therefore be detected in water bodies. | AMPA has no beneficial use in drinking water. It is generally not regarded as a classic active ingredient, but rather as a metabolite or degradation product. The main concern is that it may indicate inputs from plant protection products or other anthropogenic sources and, as a persistent trace substance, is relevant to the water cycle. | Reverse osmosis membrane: effective in reducing many dissolved trace substances.
Activated carbon: may be effective depending on the type of activated carbon, contact time and water chemistry, but this cannot always be reliably predicted. | | In Germany, AMPA is generally classified as an irrelevant metabolite. For relevant pesticide metabolites, the drinking water limit of 0.1 µg/l applies, and for total pesticides, 0.5 µg/l. According to the regulatory information found, there is no standard drinking water limit for AMPA itself, as there is for relevant metabolites; it is instead treated in terms of assessment/guidance values. |
| 4 | Atrazine | | | | | False | |
| 5 | Atrazine-2-hydroxy | | | | | False | |
| 6 | Atrazine-desethyl-desisopropyl | | | | | False | |
| 7 | Azoxystrobin | | | | | False | |
| 8 | Beflubutamid | | | | | False | |
| 9 | Bentazon | | | | | False | |
| 10 | Bixafen | | | | | False | |
| 11 | Boscalid | | | | | False | |
| 12 | Bromacil | | | | | False | |
| 13 | Bromoxynil | | | | | False | |
| 14 | Carbendazim | | | | | False | |
| 15 | Carbetamid | | | | | False | |
| 16 | Chloridazon | | | | | | |
| 17 | Chloridazon-desphenyl | Chloridazon-desphenyl, also known as desphenyl-chloridazon or chloridazon metabolite B, is a degradation product of the herbicide chloridazon. Chloridazon was primarily used in sugar beet cultivation. The active substance was degraded relatively quickly in the soil to desphenyl-chloridazon and methyl-desphenyl-chloridazon. | Across agricultural land. The substance is highly polar and mobile and can therefore enter the groundwater via seepage water. In Germany | desphenyl-chloridazon is one of the most frequently detected non-relevant pesticide metabolites in groundwater. | It is considered a non-relevant metabolite. This means that it is not assessed in the same way as a toxicologically relevant active substance in pesticides. Nevertheless, it is undesirable in drinking water because it indicates agricultural inputs and, as a persistent trace substance, may be present in the water cycle. | Reverse osmosis membrane: effective in reducing many dissolved pesticide metabolites.
Activated carbon: may be effective depending on the substance, type of carbon and contact time; however, its effectiveness cannot always be reliably predicted for highly polar metabolites. | |
| 18 | Chloridazon-methyl-desphenyl | Chloridazon-methyl-desphenyl, also known as methyl-desphenyl-chloridazon, is a degradation product of the herbicide chloridazon. Chloridazon was used primarily in sugar beet cultivation. The active substance has not been authorised in the EU since 2018, but its metabolites may still be detectable in groundwater. | Via agricultural land. Following the application of chloridazon, degradation products are formed which are relatively mobile and can migrate into groundwater. Desphenyl chloridazon and methyl desphenyl chloridazon are among the most frequently detected pesticide metabolites in groundwater in Germany. | It is considered a non-relevant metabolite. This means: it is not assessed in the same way as a toxicologically relevant active pesticide ingredient, but is nevertheless undesirable because it indicates agricultural inputs and persistent trace substances in the water cycle. | Reverse osmosis membrane: effective in reducing many dissolved pesticide metabolites.
Activated carbon: may be effective depending on the substance, type of activated carbon and contact time, but its effectiveness cannot always be reliably predicted for highly polar metabolites. | | The standard pesticide limit of 0.1 µg/l does not automatically apply to non-relevant metabolites. For chloridazon-desphenyl and methyl-desphenyl-chloridazon, a health-based guideline value of 3 µg/l is specified. |
| 19 | Chlorthalonil sulphonic acid (R 417888/M12) | Chlorthalonil sulphonic acid R 417888 / M12 is a degradation product of the fungicide chlorthalonil. Chlorthalonil was used in agriculture as a broad-spectrum fungicide against fungal infestation; its EU authorisation expired at the beginning of 2020 and was not renewed." "Across agricultural land. Chlorthalonil degrades in soil and the environment; this process produces mobile metabolites such as R 417888 / M12 | which can enter groundwater via seepage water." | In Germany, the substance is classified as a non-relevant metabolite. This means that it is not assessed in the same way as a toxicologically relevant active substance in pesticides. Nevertheless, it is undesirable in drinking water because it indicates past agricultural inputs and, as a persistent, mobile trace substance, may occur in the water cycle. | Reverse osmosis membrane: effective in reducing many dissolved pesticide metabolites.
Activated carbon: may be effective depending on the substance, type of carbon and contact time, but its effectiveness cannot always be reliably predicted for highly mobile/polar metabolites. | | The standard pesticide limit of 0.1 µg/l does not automatically apply to non-relevant metabolites. A health-based guideline value (GOW) of 3 µg/l has been set for the chlorothalonil metabolites R 471811 and R 417888. |
| 20 | Chlortoluron | | | | | | |
| 21 | Clodinafop-propargyl | | | | | | |
| 22 | Clomazone | | | | | | |
| 23 | Clopyralid | | | | | | |
| 24 | Clothianidin | | | | | | |
| 25 | Cyflufenamid | | | | | | |
| 26 | Desethylatrazine | | | | | | |
| 27 | Desethylterbuthylazine | | | | | False | |
| 28 | Desisopropylatrazine | | | | | False | |
| 29 | Dicamba | | | | | | |
| 30 | Dichlorprop (2,4-DP) | | | | | False | |
| 31 | Difenoconazole | | | | | False | |
| 32 | Diflufenican | | | | | False | |
| 33 | Dimefuron | | | | | False | |
| 34 | Dimethachlor | | | | | False | |
| 35 | Dimethachlor acid metabolite (CGA 50266) | CGA 50266 is a degradation product of the plant protection product dimethachlor. Dimethachlor is a herbicide that has been, and continues to be, used primarily in arable farming, including on rapeseed. CGA 50266 is also referred to as dimethachlor carboxylic acid / dimethachloric acid. | Across agricultural land. The active substance breaks down in the soil, producing mobile metabolites that can enter the groundwater via seepage water. | CGA 50266 is considered a non-relevant metabolite. This means that it is not assessed in the same way as a toxicologically relevant pesticide active substance. Nevertheless, it is undesirable in drinking water because it indicates agricultural inputs and persistent trace substances in the water cycle. | Reverse osmosis membrane: effective in reducing many dissolved pesticide metabolites.
Activated carbon: may be effective depending on the substance, type of activated carbon and contact time; however, its effectiveness cannot always be reliably predicted for polar metabolites. | | The standard pesticide limit of 0.1 µg/l does not automatically apply to CGA 50266. For non-relevant metabolites, health guidance values are used. For dimethachloric acid CGA 50266, a health guidance value of 3.0 µg/l is specified. |
| 36 | Dimethachlor sulphonic acid metabolite (CGA 354742) | CGA 354742 is a degradation product of the plant protection product dimethachlor. It is also known as dimethachlor sulphonic acid or dimethachlor ESA. Dimethachlor is a herbicide that is, or was, used primarily in arable farming, for example on rapeseed. | Across agricultural land. Dimethachlor breaks down in the soil, producing mobile metabolites such as CGA 354742, which can enter the groundwater via leachate. | CGA 354742 is considered an irrelevant metabolite. This means that it is not assessed in the same way as a toxicologically relevant active substance in pesticides. Nevertheless, it is undesirable in drinking water because it indicates agricultural inputs and persistent trace substances in the water cycle. | Reverse osmosis membrane: effective in reducing many dissolved pesticide metabolites.
Activated carbon: may be effective depending on the substance, type of activated carbon and contact time, but its effectiveness cannot always be reliably predicted for polar metabolites. | | The standard pesticide limit of 0.1 µg/l does not automatically apply to CGA 354742. In LAWA documents, CGA 354742 is listed as an irrelevant metabolite; a health guideline value of 3.0 µg/l is specified there. |
| 37 | Dimethenamid | | | | | False | |
| 38 | Dimethoate | | | | | False | |
| 39 | Dimethomorph | | | | | False | |
| 40 | Dimoxystrobin | | | | | False | |
| 41 | Diuron | | | | | False | |
| 42 | Epoxiconazole | | | | | False | |
| 43 | Ethidimuron | | | | | False | |
| 44 | Ethofumesate | | | | | False | |
| 45 | Glyphosate | Glyphosate is a herbicide, i.e. a weedkiller. It is used in agriculture and, to some extent, in non-agricultural contexts. In drinking water, glyphosate is an undesirable active ingredient in plant protection products. | It enters the water cycle primarily through agricultural use, run-off from land, soil input, surface water, seepage water and contaminated groundwater. The main degradation product is AMPA. | Glyphosate serves no useful purpose in drinking water. The main concern is that it indicates the presence of plant protection products and may occur as a trace substance in the water cycle. The assessment of glyphosate has been the subject of controversy for years; consequently, the strict precautionary limit for plant protection products applies to drinking water. | Reverse osmosis membrane: effective in reducing many dissolved pesticides and trace substances.
Activated carbon: can reduce glyphosate depending on the type of activated carbon, contact time and water chemistry, but this cannot always be reliably predicted. | True | For glyphosate as an individual active substance in plant protection products, the drinking water limit of 0.00010 mg/l, i.e. 0.1 µg/l, applies. For the total of plant protection products, the limit is 0.5 µg/l. |
| 46 | Isopyrazam | | | | | False | |
| 47 | Metazachloric acid (BH479-4) | Metazachloric acid, also known as metazachlor-OA, metazachlor carboxylic acid or BH479-4, is a degradation product of the plant protection product metazachlor. Metazachlor is a herbicide used primarily in arable farming, particularly on rapeseed. | Across agricultural land. Metazachlor degrades in the soil, producing mobile metabolites such as BH479-4, which can enter the groundwater via seepage water. | BH479-4 is considered a non-relevant metabolite. This means that it is not assessed in the same way as a toxicologically relevant active pesticide ingredient. Nevertheless, the substance is undesirable in drinking water because it indicates agricultural inputs and can persist for a long time in the water cycle. | Reverse osmosis membrane: effective in reducing many dissolved pesticide metabolites.
Activated carbon: may be effective depending on the substance, type of activated carbon and contact time; however, its effectiveness for polar metabolites cannot always be reliably predicted. | | The standard pesticide limit of 0.1 µg/l does not automatically apply to non-relevant metabolites. For metazachloric acid BH479-4, a health-based guideline value or assessment value of 3.0 µg/l is specified. |
| 48 | Metazachlor sulphonic acid (BH479-8) | Metazachlor sulphonic acid, also known as metazachlor-ESA or BH479-8, is a degradation product of the herbicide metazachlor. Metazachlor is, or was, used primarily in arable farming, particularly on rapeseed crops. BH479-8 is one of the main metabolites of metazachlor. | Across agricultural land. Metazachlor degrades in the soil, producing mobile metabolites such as BH479-8, which can enter the groundwater via leachate. The LAWA describes metazachlor sulphonic acid as a metabolite with very high mobility in the soil, which is relatively frequently analysed for and detected in groundwater. | BH479-8 is considered a non-relevant metabolite. This means that it is not assessed in the same way as a toxicologically relevant active pesticide ingredient. Nevertheless, the substance is undesirable in drinking water because it indicates agricultural inputs and can persist and remain mobile within the water cycle. | Reverse osmosis membrane: effective in reducing many dissolved pesticide metabolites.
Activated carbon: may be effective depending on the substance, type of activated carbon and contact time; however, its effectiveness for polar metabolites cannot always be reliably predicted. | | The standard pesticide limit of 0.1 µg/l does not automatically apply to non-relevant metabolites. For metazachlor sulphonic acid / BH479-8, a health-based guideline value of 3.0 µg/l is cited. |
| 49 | N | N-dimethylsulfamide (DMS) | N,N-dimethylsulfamide, or DMS for short, is a degradation product of the fungicide tolylfluanid. Tolylfluanid was used, amongst other things, in fruit growing and viticulture. DMS is considered an irrelevant metabolite of a plant protection product. | Regarding past agricultural applications of tolylfluanid. The active substance breaks down in soil, during which DMS may be formed and enter the groundwater via seepage water. Due to its mobility, it can still be detected in raw and drinking water even years later. | DMS itself is assessed as a metabolite of no toxicological relevance, but is nevertheless undesirable in drinking water. Particularly important: during drinking water treatment with ozone, DMS can give rise to the carcinogenic N-nitrosodimethylamine (NDMA). DMS is therefore of particular relevance in terms of water hygiene. | Reverse osmosis membrane: effective in reducing many dissolved pesticide metabolites.
Activated carbon: may be effective depending on the substance, type of carbon and contact time; however, its effectiveness for polar metabolites cannot always be reliably predicted. | |
| 50 | S-metolachlor acid (CGA 351916/51202) | S-metolachlor acid, also known as metolachlor-OA, metolachlor carboxylic acid or CGA 351916 / CGA 51202, is a degradation product of the herbicide S-metolachlor. S-metolachlor was used in agriculture for weed control, including on maize, beet, sunflowers and other crops. | Across agricultural land. The active substance breaks down in the soil, producing mobile metabolites such as CGA 351916 / CGA 51202, which can enter the groundwater via seepage water. According to LAWA, metolachlor carboxylic acid is one of the metabolites that are frequently analysed for and detected. | The substance is classified as a non-relevant metabolite. This means that it is not assessed in the same way as a toxicologically relevant active pesticide ingredient. Nevertheless, it is undesirable in drinking water because it indicates agricultural inputs and can occur as a mobile trace substance in the water cycle. | Reverse osmosis membrane: effective in reducing many dissolved pesticide metabolites.
Activated carbon: may be effective depending on the substance, type of activated carbon and contact time; however, its effectiveness for polar metabolites cannot always be reliably predicted. | | The standard pesticide limit of 0.1 µg/l does not automatically apply to non-relevant metabolites. For S-metolachlor acid CGA 351916 / CGA 51202, a health-based guideline value of 3.0 µg/l is specified. |
| 51 | S-metolachlor sulphonic acid (CGA 380168/354743) | S-metolachlor sulphonic acid, also known as metolachlor-ESA, is a degradation product of the herbicide S-metolachlor. S-metolachlor has been and continues to be used in agriculture for weed control, including on maize, beet, sunflowers and other crops. | Across agricultural land. The active substance is broken down in the soil, producing mobile metabolites such as CGA 380168 / CGA 354743, which can enter the groundwater via seepage water. The LAWA describes metolachlor sulphonic acid as a metabolite frequently detected in groundwater. | The substance is classified as a non-relevant metabolite. This means that it is not assessed in the same way as a toxicologically relevant active ingredient in pesticides. Nevertheless, it is undesirable in drinking water because it indicates agricultural inputs and can be highly mobile within the water cycle. | Reverse osmosis membrane: effective in reducing many dissolved pesticide metabolites.
Activated carbon: may be effective depending on the substance, type of activated carbon and contact time; however, its effectiveness cannot always be reliably predicted for polar metabolites. | | The standard pesticide limit of 0.1 µg/l does not automatically apply to non-relevant metabolites. For S-metolachlor sulphonic acid CGA 380168 / CGA 354743, a health-based guideline value of 3.0 µg/l is specified. |
| 52 | S-metolachlor sulphonic acid (NOA 413173) | “S-metolachlor sulphonic acid NOA 413173 is a degradation product of the herbicide S-metolachlor. S-metolachlor has been and continues to be used in agriculture for weed control | including on maize | beet | sunflowers and other crops." | Across agricultural land. The active substance degrades in the soil; in the process, mobile metabolites such as NOA 413173 are formed, which can enter the groundwater via seepage water. According to LAWA, the metabolite NOA 413173 from metolachlor/S-metolachlor was detected at around 20% of the groundwater monitoring points investigated. | NOA 413173 is considered a non-relevant metabolite. This means that it is not assessed in the same way as a toxicologically relevant active substance in pesticides. Nevertheless, it is undesirable in drinking water because it indicates agricultural inputs and, as a mobile trace substance, may occur in the water cycle. |
| 53 | Trifluoroacetic acid (TFA) | Trifluoroacetic acid, or TFA for short, is a very small, water-soluble and extremely persistent chemical. It is classified as a highly persistent and highly mobile substance. This means that it is hardly degraded in the environment and moves easily with water through soil, rivers and groundwater. | TFA is formed, amongst other things, as a degradation product of fluorinated chemicals, for example from certain refrigerants, plant protection products, industrial chemicals and other PFAS-like precursors. It can enter the water cycle via the air, rain, surface water, wastewater, agriculture and industry. | TFA is notable not so much for its acute toxicity, but primarily for its extreme persistence and mobility. Once in the water cycle, it is very difficult to remove. The Federal Environment Agency states that TFA cannot be removed in practice using conventional water treatment methods and that inputs should be avoided as far as possible. | Reverse osmosis membrane: one of the most relevant domestic technologies, but TFA is challenging to treat due to its small molecular size and high mobility. Activated carbon: generally not reliable for TFA, as TFA is highly mobile and hardly binds to activated carbon. | | There is currently no standard limit value for TFA in the Drinking Water Ordinance. However |
| 54 | Supconazole | | | | | | |
| 55 | | | | | | False | |
| 56 | | | | | | False | |
| 57 | | | | | | False | |
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