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Many brick homes in areas like Soulard or the Central West End still have original galvanized steel supply lines that corrode internally over decades, eventually restricting flow or causing pinhole leaks. Another red flag is a sudden drop in water pressure after a heavy rainstorm. The heavy alluvial clay in the Mississippi River valley expands when wet, putting immense physical pressure on buried sewer laterals that can cause older clay or cast iron pipes to crack or separate at the joints.\u003C/p>",{"question":23,"answer":24},"Is there anything I can check before calling a plumbing professional in St. Louis?","\u003Cp>If you have low pressure at a single sink, unscrew the aerator and look for white, chalky flakes. Our water is often moderately hard, and these mineral deposits can quickly clog fixtures. You should also check your sump pump before the spring rainy season hits; if the basin is dry but the pump won't trigger, the high water table near the river could lead to a quick basement flood when the next storm arrives. During our 100-plus freeze days each year, ensure your outdoor hoses are disconnected to prevent ice from backing up into your interior walls. However, if you see a lead service line—common in pre-1950 homes—or suspect a leak under your slab due to our shifting clay soil, stop immediately and call a licensed plumbing company.\u003C/p>",{"question":26,"answer":27},"What types of plumbing services are commonly offered in St. Louis?","\u003Cp>Water heater replacement is a year-round staple locally because the moderate-to-hard mineral content in our water causes sediment to settle in the bottom of tanks, often leading to early failure within seven years. For those living in the city's vast inventory of historic brick homes, lead service line replacement has become a priority to ensure water safety as older infrastructure ages out. Additionally, many local plumbers specialize in sewer lateral repair using trenchless methods. This is essential because the local expansive clay tends to shift during our extreme temperature swings, which can crack the older clay pipes that connect most local homes to the Metropolitan Sewer District's main lines.\u003C/p>",{"question":29,"answer":30},"How do I find the best plumbing company in St. Louis?","\u003Cp>The first step in vetting a local plumber is verifying they hold a valid license from the City of St. Louis or St. Louis County, as these jurisdictions require separate trade certifications. You should also confirm they carry active general liability and workers' compensation insurance to protect your property during repairs beneath your foundation. To save time on research, you can use Best Pick Reports. They identify the best plumbing companies through a rigorous six-step merit-based process that includes verifying credentials and requiring a 4.0+ Google rating or an 80% satisfaction rate from independent surveys. Choosing an expert who understands how our local loess and clay soils settle will ensure your new pipes are installed at the proper grade to handle heavy seasonal runoff.\u003C/p>",[],[],{"categories":34},[35,43,50,57,64,71,77,83,90,97,102,109,116,122,128,135,141,148,155,160,166,172,179,186,193,200,206,212,219,225,230,236,243,248,255,261,267,273,280,285,292,299,305,310,316,323,329,335,340,346,350,355,361,367,372,378,384,389,395,401,407,413,419,425,431,437,443,450],{"category_id":36,"display_name":37,"url_name":38,"friendly_name":37,"icon":39,"contractor_count":40,"review_count":41,"hiring_title":42},26,"Air Conditioning & Heating","air-conditioning-and-heating",null,217,400445,"HVAC Companies",{"category_id":44,"display_name":45,"url_name":46,"friendly_name":45,"icon":39,"contractor_count":47,"review_count":48,"hiring_title":49},43,"Appliance Repair","appliance-repair",24,8466,"Appliance Repair 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