C1 Action(s) to terminate or mitigate the cause C2 Action(s) to replace source D1 Replacement, disconnection or repair of defective components D2 Cleaning, scouring and/or disinfecting contaminated components E Emergency actions for the consumers' health and safety E1 Notification of and instructions to consumers for example, prohibition of use, boil water order, temporary limitations on consumption). E2 Provision of a temporary alternative drinking water supply (for example, bottled water, water in containers, tankers) O Others P1 Replacement, disconnection or repair of defective components P2 Cleaning, scouring and/or disinfecting contaminated components S1 Security measures to prevent unauthorised access T Establishing, upgrading or improving treatment