best practicable environmental option (BPEO)

In the UK, suggested pragmatic approach for the control of polluting effluents and emissions, without unduly penalizing the offending industry. Based on the concept that the costs of pollution are at least partially offset by the economic and social benefits of a viable industry, BPEO is criticized for permitting release of polluting substances in volumes greater than that would have been allowed under an absolute standard. Also called best practicable means.