Service delivery in troubled Alexandra was hampered by overcrowding, according to Johannesburg City manager Ndivhoniswani Lukhwareni.
Lukhwareni was speaking at a South African Human Rights Commission inquiry into Alexandra in Johannesburg on Thursday.
He said the mushrooming of illegal structures made it difficult for City employees to provide services in the area.
"Alexandra is reaching a point where services are not as easy as in other areas.
"Alexandra is a congested area. Our fire engines need broader roads to respond to fire outbreaks."
Lukhwareni added that there were 1 200 chemical toilets in the area. One toilet serves 11 households.
"We service those toilets twice a week minimum. We have a unique methodology.
"We also have issues of water management and have instituted waste water strategies. We have about R86m to address the matter on a multi-year project," he said.
Blockages
Lukhwareni told the inquiry that this financial year, they have dealt with 1 300 sewerage blockages in Alexandra.
The municipality has also attended to 22 water burst complaints within 24 hours. He complained about vandalism of municipal properties and the incorrect use of sewerage systems.
Lukhwareni claimed that in one instance, residents deliberately blocked a drain to use sewerage water to irrigate their vegetable gardens.
"If Alexandra was properly demarcated, it would be easy to reach all points (of complaints). We have areas where people have built structures on top of pipe networks.