This European Standard is applicable to the construction and testing of drains and sewers normally buried in the ground and usually operating under gravity. The construction of pipelines operating under pressure is covered by this European Standard together with EN 805 as appropriate. This European Standard is applicable to drains and sewers installed in trenches, under embankments or above ground. For trenchless construction EN 12889 applies. Additionally other local regulation should be taken into account e.g. concerning health and safety pavement reinstatement and requirements for tightness testing. This standard does not apply for planning and design in accordance with EN 752.