What Council Directive 91/271/EEC of 21 May 1991 concerning urban waste-water treatment and discharge requires
The Council Directive 91/271/EEC, adopted on 21 May 1991 and published in the Official Journal L 135 on 30 May 1991, governs the collection, treatment, and discharge of urban waste water, as well as the treatment and discharge of industrial waste water from certain sectors. Its primary objective is to protect the environment from adverse effects caused by insufficiently treated waste water. The Directive defines key terms: 'urban waste water' as domestic waste water mixed with industrial waste water and/or run-off rain water; '1 p.e. (population equivalent)' as the organic biodegradable load with a BOD5 of 60 g of oxygen per day; 'primary treatment' as a physical/chemical process reducing BOD5 by at least 20% and total suspended solids by at least 50%; and 'secondary treatment' as a biological process meeting Annex I Table 1 requirements. Member States are required to ensure all agglomerations have collecting systems by 31 December 2000 for those over 15000 p.e. and by 31 December 2005 for those between 2000 and 15000 p.e.; sensitive areas require systems by 31 December 1998 for agglomerations over 10000 p.e. Secondary treatment deadlines are set for discharges from agglomerations over 15000 p.e. by 31 December 2000, and between 10000 and 15000 p.e. by 31 December 2005. Industrial waste water entering collecting systems must have prior regulations or specific authorizations by 31 December 1993. Sludge disposal to surface waters must be phased out by 31 December 1998. A committee assists the Commission on implementation. Member States must adopt implementing laws by 30 June 1993.
Pillar: Water & Environmental Resources · Authority: European Commission (DG ENV) · Version: 1.0.0 · Last updated:
Primary source: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:31991L0271
SHA-256 integrity: f51d6b7b0aca7c4099f299f29cd27b546a50bae96ec3309b9dcc19497f7eec4b
Primary Citations — 7 traced to source
- Council Directive 91/271/EEC of 21 May 1991 concerning urban waste-water treatment, OJ L 135, 30/05/1991, P. 0040-0052 - Article 1: Scope and objective of the Directive.
- Council Directive 91/271/EEC, Article 2: Definitions of urban waste water, domestic waste water, industrial waste water, agglomeration, collecting system, p.e., primary treatment, secondary treatment, appropriate treatment, sludge, eutrophication, estuary, coastal waters.
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