There are no clearly defined standards for on-site sanitation and no means of enforcement to ensure that only improved facilities get built and are adequately serviced. In addition, LSGBs have not invested in sites for the safe emptying and handling of septage, i.e. the content of pit latrines and septic tanks. Sanitation services can be operated in an isolated manner, or combined with other services (water supply, district heating, storm water collection, solid waste collection, etc.).