Officials stress that it is both illegal and dangerous to enter the city's 7,400 miles of sewer pipes.
Residents say flooding and sewage backflow are big problems during heavy rainfall.
County officials say the foul odors first started coming from a tank where maintenance was being performed. They later emanated from some other processing tanks.
It's a renter's nightmare in Brooklyn as a woman living in a first-floor apartment has been dealing with a major sewage problem for nearly a week.
The vice chair of the White House Environmental Justice Advisory Council was in New York Monday to tour waste sites in Mount Vernon amid what officials are calling an unprecedented sewage crisis.
The New York City Department of Design and Construction is investigating whether on-going tunneling caused a sinkhole that opened up and swallowed a car in Queens Thursday.