Plumbing in Milwaukee spends the heating season tied to the boiler and the basement. Radiator valves drip into plaster and get mistaken for a supply leak. Makeup water that never stops can mean the boiler, not the heater. Duplex stacks of old galvanized pinhole when a stuck valve is forced. Floor drains take melt and rain on frozen ground. Say if the water is hot, cold, or dirty.
A sill cock splits when a hose stays on through a freeze that lasts for weeks. The inside stop may be a closet you have not opened since fall. Ejector pits in low basements fail at the float, and the lid tells you. If the main shutoff spins without closing, say so. Sewage at the floor drain is not a lavatory clog. Look at the radiator before you blame the supply.
A lower-unit sink that backs up while the upper one drains is grease in a shared stack. Roots and a bellied lateral show up when the washer runs. Say where the cleanout is. A water heater that has been recovering all heating season leaks at the tank on the busiest morning. Know gas or electric, and whether a pan exists. Mineral crust on every aerator can mean the lines, not the tank.
Lines on an outside wall freeze when a room was shut and the rest of the house stayed warmer. If you already closed the water on a flooding tank, say so. This is a bad month to learn there is no isolation valve. A leak on your side of a parkway meter pit still belongs in the call. Do not mix boiler water with domestic hot water until you know the source.
Lead with backup, burst, no hot water, or a radiator that is actually the leak. Name duplex or bungalow. Say if the hose is still attached. Say whether the basement drain is involved. Milwaukee's heating season will not pause for a slow drip. Call the number on this page.