Best Plumbing in Lewisville, TX — 7 Vetted Contractors

Texas licenses plumbers at the state level through the Texas State Board of Plumbing Examiners (TSBPE) — there is no separate City of Lewisville plumbing license. However, your contractor still needs to pull permits through the City of Lewisville Development Services Department for qualifying work. Verify state license status at tsbpe.texas.gov before hiring.

Quite possibly. Lewisville's clay soils make slab leaks more common than in many other Texas cities. Log into the City of Lewisville utility portal to pull your daily usage data — a steady baseline leak will show as consistent overnight usage. A licensed plumber with electronic leak detection equipment can pinpoint the location without breaking concrete first. Don't ignore it; a slow slab leak can undermine your foundation over time.

For a standard 40-gallon gas tank water heater, expect $1,100–$1,800 fully installed in the Lewisville market as of 2026. Tankless (on-demand) units run $2,500–$4,500 installed, and may require a gas line upgrade. Given Lewisville's hard water, ask about anode rod condition and consider a water softener if you're already doing the work — it will meaningfully extend the new unit's life.

Yes, this is worth investigating. Homes built in Lewisville between roughly 1978 and 1995 frequently used polybutylene (PB) pipe, which degrades over time when exposed to chlorinated municipal water. Failures can be sudden and cause major water damage. A plumber can do a visual inspection of exposed pipe in your utility areas. If it's gray flexible plastic with gray, blue, or black fittings, you likely have PB. Full repiping in a typical Lewisville home runs $4,000–$12,000 depending on size and access.

Yes. Per the City of Lewisville Development Services Department, water heater replacements require a permit and inspection. The permit should be pulled by your licensed plumbing contractor, not by you as the homeowner — if a contractor asks you to pull it yourself, that's a liability red flag. Unpermitted water heater work can also create issues when you sell the home.

The City of Lewisville requires annual testing of backflow prevention devices on irrigation systems. Testing must be performed by a licensed backflow prevention assembly tester (a credential separate from a general plumbing license). Your plumber may hold this credential, or they can refer you to someone who does. Testing typically costs $50–$150 and results must be submitted to the city. Skipping this can result in a notice from Lewisville's water utility.

Yes, meaningfully so. Per Trinity River Authority reporting, Lewisville's municipal water supply runs approximately 300–350 mg/L in total dissolved solids — well above the 'hard' threshold of 180 mg/L. This accelerates scale buildup in water heaters, shortens anode rod life, and clogs aerators and appliance inlets over time. A whole-home water softener ($800–$2,500 installed) is a legitimate investment if you're doing major plumbing work or replacing a water heater.

It depends on the repair method. Electronic leak detection alone takes a few hours. If the repair involves spot excavation through the slab, expect one to two days and temporary water shutoff — you may want to make other arrangements for that period. A full pipe reroute (running new lines through walls instead of the slab) can take two to four days. Tunneling under the slab is the most disruptive method and can take a week or more. Your plumber should walk you through the tradeoffs before you commit to a method.