Methods, construction products and materials for the repair of sewers and drains in non-accessible areas - Part 1: Requirements, testing and marking

German standard methods for the examination of water, waste water and sludge - General information (group A) - Part 60: Analytical quality assurance for chemical and physicochemical water analysis (A 60)

German standard methods for the examination of water, waste water and sludge - Anions (group D) - Part 13: Determination of cyanides by gas extraction method (D 13)

German standard methods for the examination of water, waste water and sludge - Jointly determinable substances (group F) - Part 53: Determination of Trifluoroacetic acid (TFA) in water - Method using liquid chromatography and mass spectrometric detection (LC-MS/MS) after direct injection (F 53)

German standard methods for the examination of water, waste water and sludge - Microbiological methods (group K) - Part 25: Protocol for the validation of alternative confirmation procedures and for verifications of validated alternative confirmation procedures (K 25)

Plastics piping systems for soil and waste discharge (low and high temperature) within the building structure - Unplasticized poly(vinyl chloride) (PVC-U) - Part 2: Guidance for the assessment of conformity

Drain and sewer systems outside buildings - Sewer system management; German and English version EN 752:2017/prA1:2025

Plastics piping systems for soil and waste discharge (low and high temperature) within the building structure - Unplasticized poly(vinyl chloride) (PVC-U) - Part 1: Specifications for pipes, fittings and the system; German and English version prEN 1329-1:2024

Wastewater treatment plants - Part 3: Preliminary treatment; German version EN 12255-3:2024

Wastewater treatment plants - Part 5: Lagooning processes; German version EN 12255-5:2024