A 1-0 win away to Nakambala took them to a breakaway 15 points with four wins and two draws.
Lumwana have broken away from second placed Zesco United that has 11 points having played an equal number of matches.
Only Zanaco and Nchanga Rangers have played one game less.
Lusaka Dynamos recorded their second successive win away to In Choma Eagles to hit sixth position.
Dynamos seem to have shaken off their early season blues since turning a corner in their 3-1 win against Red Arrows last weeend.
Dynamos goalkeeper Monga Ndala saved a Mwila Phiri penalty before Potiphar Zulu netted for Patrick Phiri’s side. Captain Clatous Chota Chama set up Zulu.
Leading league top scorer Chris Mutshimba Mugalu grabbed the second to move Dynamos to number six on the log.
Zanaco, who returned from Egypt today after that fine effort in a 0-0 draw against Al-Ahly, face Nchanga Rangers in the bankers’ rescheduled Super Division Week 6 match on Wednesday.
MTN/FAZ Super League Full Week Six results:
Nkana 1-0 City of Lusaka
Red Arrows 1-1 Power Dynamos
Buildcon 1-0 Napsa Stars
Forest 0-2 Nkwazi
Choma Eagles 0-2 Lusaka Dynamos
Mufulira Wanderers 1-1 Kabwe Warriors
Konkola Blades 1-0 Real Nakonde
Nakambala 0-1 Lumwana
Note: Zesco 2-2 Green Buffaloes was played on Wednesday.
Zanaco v Nchanga Rangers will be played on Wednesday.