Registration number (WIID)Project No.TitleStatus
69387LVS EN 12255-3:2024Wastewater treatment plants - Part 3: Preliminary treatmentStandarts spēkā
69387EN 12255-3:2024Wastewater treatment plants - Part 3: Preliminary treatmentStandarts spēkā
69386EN 12255-13:2023Wastewater treatment plants - Part 13: Chemical treatment - Treatment of wastewater by precipitation/flocculationIzstrādē
69386LVS EN 12255-13:2023Wastewater treatment plants - Part 13: Chemical treatment - Treatment of wastewater by precipitation/flocculationStandarts spēkā
69385prEN 12255-15 revWastewater treatment plants - Part 15: Measurement of the oxygen transfer in clean water in aeration tanks of activated sludge plantsIzstrādē
68378-Requirements and test methods for renovation methods for non-pressure drainage and sewerage networks inside buildingsIzstrādē
67883EN 14654-1:2021Drain and sewer systems outside buildings - Management and control of activities - Part 1: General requirementsIzstrādē
67883LVS EN 14654-1:2021Drain and sewer systems outside buildings - Management and control of activities - Part 1: General requirementsStandarts spēkā
67881EN 14654-3:2021Drain and sewer systems outside buildings - Management and control of activities - Part 3: Drain and sewer cleaningIzstrādē
67881LVS EN 14654-3:2021Drain and sewer systems outside buildings - Management and control of activities - Part 3: Drain and sewer cleaningStandarts spēkā
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