You will have to lift the manhole covers; a strong garden spade will raise the edge enough for you to grasp the cover inspect the chamber that is nearer to the main drain, septic tank or cesspool than the overflowing chamber or gully. You don't have to use your energy provider's boiler cover! You are responsible for maintaining or repairing any drains inside the boundaries of your property. Amagansett, east hampton, montauk, sag harbor, wainscott. Absolutely true i hug a plumber today karan.