Abbreviated Name:
Population using safely managed sanitation services
Indicator Name:
Percentage of population using safely managed sanitation services
Domain:
Health determinants and risks / Demographic and socioeconomic determinants
Related Terms:
Environmental health, communicable diseases
Definition:
Population using an improved sanitation facility that is not shared with other households and where excreta are safely disposed of in situ or treated off site. Improved sanitation facilities include flush/pour flush to piped sewer systems, septic tanks or pit latrines; pit latrines with slabs (including ventilated pit latrines), and composting toilets.
Measurment Method:
Data on improved sanitation facilities are routinely collected in household surveys and censuses. These data sources may also collect information on sharing of sanitation facilities are shared, and on emptying of on-site sanitation facilities. Household-level responses, weighted by household size, are used to compute population coverage. Data on treatment of wastewater and faecal sludge from on-site sanitation systems are routinely collected by drinking water regulators, ministries, utilities, municipalities and other government institutions with authority for oversight of service delivery.
Numerator:
Population using safely managed sanitation services
Denominator
Total population.
Estimation method:
The JMP assembles, reviews and assesses data collected by national statistics offices and other relevant institutions including sectoral authorities. Linear regression is used to provide estimates of the population using improved sanitation facilities, as well as the proportion practising open defecation. Regressions are also made to estimate the population using improved sanitation facilities connected to sewers and septic tanks; these are constrained to not exceed the estimates for total improved facilities. Regressions are extrapolated for two years beyond the last available data point, after which coverage is held constant for four years. The proportion of the population sharing sewered and non-sewered sanitation facilities is estimated by taking an average all available data on sharing from household surveys and censuses. The population using safely managed sanitation services is calculated as the sum of three groups: (1) The population using sewer connections which are not shared and deliver excreta to treatment plants where they receive treatment (at least secondary treatment , or primary treatment with a long ocean outfall); (2) The population using non-sewered sanitation facilities which are not shared and are emptied, and the excreta are transported and treated off-site, (3) The population using non-sewered sanitation facilities which are not shared and are not emptied, and the excreta are considered safely disposed of in situ. Separate regressions are made of the proportion of sewage waste which receives treatment, and of the proportion of wastes from on-site systems which are transported off-site and receive treatment. A third regression is made on the proportion of wastes from on-site systems which have never been emptied, and are considered safely disposed of in situ. These three figures are multiplied by the proportion of the population using sewer connections or non-sewered facilities which are not shared, and then summed to calculate the population using safely managed sanitation services. Separate estimates are made for urban and rural areas. The most recent household survey or census available for most countries was typically conducted two to six years ago. The JMP extrapolates regressions for two years beyond the last available data point. Beyond this point the estimates remain unchanged for up to four years unless coverage is below 0.5 per cent or above 99.5 per cent, in which case the line is extended indefinitely. National estimates are generated as weighted averages of the two, using population data from the most recent report of the United Nations Population Division. For more information see https://washdata.org/monitoring/methods/estimation-methods Predominant type of statistics: adjusted and predicted
Disaggregation:
Place of residence (urban/rural), socioeconomic status (wealth, affordability etc.)
Also: population with hand washing facility with soap and water
Definition: population with basic hand washing materials in the home, including a hand washing facility, soap and water.
Numerator: population with basic hand washing materials in the home.
Denominator: total population.
Also: population with hand washing facility with soap and water
Definition: population with basic hand washing materials in the home, including a hand washing facility, soap and water.
Numerator: population with basic hand washing materials in the home.
Denominator: total population.
Primary data sources:
Household surveys, population census
Alternate data sources:
Administrative reporting system
Measurment frequency:
Population based survey are implemented 3-5 years, estimation would be updated annually