On 30-31 January 2024, the German Ordinance on Facilities Handling Substances That Are Hazardous to Water (AwSV) List of published water hazard class (WGK) classifications was updated. The following substances were newly assigned a WGK:

1. 2-ethyl-N,N-bis(2-ethylhexyl)hexylamine

   WGK 2 (obviously hazardous to water)

2. Undecan-6-one

   WGK 2 (obviously hazardous to water)

3. Lithium zirconium phosphate

   WGK 1 (slightly hazardous to water)

4. 1,1-Dimethoxy-4-methyl-2-pentanamine

   WGK 2 (obviously hazardous to water)