Wastewater treatment plants - Principles for the design of structures and technical equipment - Part 8: Specific principles for the equipment for sewage treatment in granular media filter and granular fixed bed filter
Edition 2005-06

Plastics piping systems for drainage and sewerage without pressure - Non-circular pipes and joints made of glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resins (UP) - Dimensions, requirements and tests (ISO 16611:2017)
Edition 2020-01

Pipes and fittings of polypropylene (PP) for buried cable ducting - Dimensions and technical delivery conditions
Edition 2017-07

Silage and liquid manure containers, containers in biogas plants, bunker silos and trench silos - Part 5: Bunker silos and trench silos
Edition 2015-09

Service activities relating to drinking water supply systems and wastewater systems - Guidelines for benchmarking of water utilities (ISO 24523:2017)
Edition 2018-03

Pipes and fittings of high-density polyethylene (PE-HD) for buried cable ducting - Dimensions and technical delivery condition
Edition 2016-12

Sports grounds - Part 3: Drainage
Edition 2006-09

Wastewater treatment plants - Part 14: Disinfection; German version EN 12255-14:2003
Edition 2004-03

Wastewater treatment plants - Part 8: Sludge treatment and storage; German version EN 12255-8:2001
Edition 2001-10

Wastewater treatment plants - Part 15: Measurement of the oxygen transfer in clean water in aeration tanks of activated sludge plants; German version EN 12255-15:2003
Edition 2004-04