Septic tank
While a properly maintained and located septic tank does not pose any more environmental problems than centralized municipal sewage treatment, certain problems can arise with septic tanks in unsuitable locations. Since septic systems require large drainfields, they are not suitable for densely built areas.
Bettani
The proposed Tank Zam Dam Project is situated across FR Tank at about 30 miles from Tank city, Khyber Pakhtunkhwa. According to rough estimate the Head Tank Zam has 1200 feet bottom and in its South West it has a semi solid hill and on its northern eastern side hills made of mud are located. Flood arriving here from different hilly torrents usually remains out of control and often splash out of its banks and start flowing in different directions and due to this reason its flood water was not fully utilized, he added. In the framed laws of 1965-66, Tank Zam has six Roodhs (Channels), which include Takwara, Siddqi, Chauha, Pir Katch, Lohra and Kiryani from the Northern side. Roodh Siddqi is the major one because large parts of the villages are irrigated with this canal. In present form, almost all the water of this Zam is used for drinking water and is supplied to city. The Bittani tribes residing near Zam also use the water for irrigation of their lands.