KS I ISO 24512:2019 Activities relating to drinking water and wastewater services ― Guidelines for the management of drinking water utilities and for the assessment of drinking water services
2019KS I ISO 24512:2019 Activities relating to drinking water and wastewater services ― Guidelines for the management of drinking water utilities and for the assessment of drinking water services
2013KS I ISO 24512:2013 Activities relating to drinking water and wastewater services ― Guidelines for the management of drinking water utilities and for the assessment of drinking water services