Plumbing in Louisiana fails in cast iron stacks, low-slope sewers, wells and septic in the country, and yard lines that sit in mud. A raised house may show the leak if you look. A slab will not. Say whether the water is clean, sewage, or a drain that returns when the street is full.
Older town houses still have galvanized supply that flakes and stains, and cast iron that rusts through a chase. Lead at an old tub weep is common on raised houses. Soft black sewer lines collapse in the yard. Water heaters in damp closets and under raised floors sweat and rust out. A pan that has been full for months rots the floor around it before the burner looks failed. If the heater sits low, a wet yard can drown it.
Drainage is the regional pain. A long house with little fall will gurgle at the far fixture when the washer runs. Bellies form where the trench was soft. In heavy rain, a city main or a ditch that cannot take more water pushes back through a low floor drain or a cleanout. That backup is not the same repair as a clogged lavatory stopper. On north Louisiana slabs, a warm stripe and a night hiss are the leak you cannot see. Septic wet ground is its own conversation.
Freeze nights in Shreveport and Monroe still split exposed bibs and lines under piers. The southern parishes rarely give you that warning and instead give you corrosion and roots in the yard line. Live oaks over a Baton Rouge or Lafayette lateral are a clue when the line slows every wet season. Find the shutoff if you can. Say whether it turns. Sewage smell should be reported apart from a clean drip at a valve.
Call with the town, the fixture, and the house form. Raised, slab, or a crawl you can enter. Ceiling stain under a bath, gurgling kitchen, no hot water, or a floor drain that burps after rain. Say if oaks sit on the yard line. A bayou parish backup and a Shreveport slab leak are different jobs. Give the path. The trade cannot guess it from the word plumbing alone. Call the number on this page.