Public Health Engineering Department chuan mipuiin tui thianghlim an chanthat theih nan hma a la zel a. Kumin September thla thlenga a hmalak tawhna te hetiangin :
Greater Saitual WSS (Pumping), Greater Hnahthial WSS (Pumping), Tuipang & Surrounding Village WSS (Pumping), Bilkhawthlir WSS (Pumping), Phuaibuang (Pumping) WSS leh Zamuang (Pumping) WSS te siam zawh tawh niin hman tan tawh a ni a. Heng bakah hian Sairang WSS (Pumping), Tlabung WSS (Pumping) leh Chhippui/Kawnmawi WSS te pawh hna thawh zawh tawh niin hman theih tura buatsaih mek a ni bawk.
