This is a rejoinder to a comment by Profs. Cutler and Miller (CM) on a recent paper of ours, “Public Health Efforts and the Decline in Urban Mortality” (NBER WP No. 25027), in which we examine the effect of water filtration on infant and total mortality using the same data as were used by CM...

The issue of sludge utilization from wastewater treatment in agriculture is an important socio-economic and environmental problem in the European Union (EU) and Bulgaria. It is becoming topical issue along with constantly growing amount of produced wastewater treatment sludge, deficiency of...