PATERSON, New Jersey (WABC) -- About 185,000 residents remain under a boil water advisory in Paterson as crews work to repair a water main break -- and efforts to find the source of the crack have taken longer than anyone could have imagined.

Water service has been interrupted for four days after the 30-inch water main broke Friday . Some residents have had no water and many still have extremely low pressure.

But officials in Paterson - the state's third-largest city - said some relief should arrive by Tuesday night.

Paterson Mayor Andrew Sayegh is calling on residents to conserve water. He said he has taken action to shut down water parks in the city as residents struggle to deal with zero to little water as the heat begins to build.

Officials say crews are working to fix the main,

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