According to ECHO's guidance, the indicator's value should be calculated as the average percentage of the following indicators' value:
> % of the population considering that their basic WASH needs are met
> % of the population with adequate hygiene practices (according to SPHERE standards on appropriate use and regular maintenance of facilities and hand washing)
Guidance on collecting and analysing data on the first indicator is provided here.
The second indicator's value should be calculated as the average of the following sub-indicators:
> use of sanitation facility - see guidance here
> maintenance of sanitation facility - see guidance here
> hand washing with soap/ash - see guidance here
Report to ECHO not only the proportion of the target population with adequate WASH services and hygiene practices but also the value of individual sub-indicators.