Activities relating to drinking water and wastewater services. Guidelines for the management of wastewater utilities and for the assessment of wastewater services— 72 стр.
Activities relating to drinking water and wastewater services. Guidelines for the management of drinking water utilities and for the assessment of drinking water services— 68 стр.
Activities relating to drinking water and wastewater services. Examples of the use of performance indicators using ISO 24510, ISO 24511 and ISO 24512 and related methodologies— 74 стр.
Activities relating to drinking water and wastewater services. Guidelines for the management of drinking water utilities and for the assessment of drinking water services— 68 стр.