Wealth (v2.1)

	% Piped water
Chad (Africa)
Total	3.55
Zone 1 (N'Djamena)	30.3
Zone 2 (Borkou, Ennedi, Tibesti, Kanem, Barh El Gazal, Lac)	2.74
Zone 3 (Guera, Batha, Salamat)	2.28
Zone 4 (Ouaddai, Assongha, Sila, Biltine - Wadi Fira)	6.49
Zone 5 (Chari-Baguimi, Dababa, Baguirmi, Hadjer Lamis)	0.01
Zone 6 (Mayo-Kebbi Est and Ouest)	2.02
Zone 7 (Logone Occidental & Oriental, Monts de Lam, Tandjile Est & Ouest)	0.44
Zone 8 (Mandoul, Moyen-Chari, Bahr Koh, Lac Iro)	0.01

Lighter numbers are estimates; years may differ