AWWA manual M36 provides complete operating guidance on water audits, leak detection, and water loss control programs for drinking water systems.The third edition is significantly expanded with important new information has been added on a major advancement in water-auditing methodology. Codeveloped by the American Water Works Association and the International Water Association, the method provides true accountability of real losses (leaks) and apparent losses (billing errors, meter inaccuracy), so water utilities may quickly recover lost revenue.