At this point the environmental PEC/PNEC ratio is not addressed. The environmental risk assessment is a step later at the end. To ensure the proper performance within the WWTP, the protection of WWTP’s microorganism flora is in focus here.

E: Take into account that the substance might be used in different products / mixtures or processes. Worst case is that PEC / PNEC > 1. For more detailed information please refer to the following ECHA Guidance documents on exposure assessment as well as risk management measures and operational conditions.

ECHA Guidance R 16- Guidance on information requirements and chemical safety assessment - Chapter R.16: Environmental exposure assessment:Link
ECHA Guidance R 13- Guidance on information requirements and chemical safety assessment - Chapter R.13: Risk management measures and operational conditions. Link
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