Affordability of water and sanitation services 2015, para. 76
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Ensuring the affordability of water and sanitation services requires an effective legal and policy framework, which includes a strong regulatory system. The International Water Association Lisbon Charter recognizes the importance of regulation, recommending that regulators "supervise tariff schemes to ensure they are fair, sustainable and fit for purpose; promoting efficiency and affordability".
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Non-negotiated soft law
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Special Rapporteur on the human rights to safe drinking water and sanitation