Plumbers in San Marcos

The city uses MGO Connect to take in, review and process permit applications, and plumbing is one of its categories alongside residential, commercial and site work. Inspections are booked through the same portal, so you can see whether yours has passed. Questions go to the permit center at 512.393.8230 or planninginfo@sanmarcostx.gov. Ask the permit center, too, whether San Marcos requires plumbing contractors to register.

State law sets the floor. Texas cities of more than 5,000 people must regulate plumbing by ordinance, water heaters included, and require a permit, except for small jobs such as fixing a leak or replacing a faucet, toilet, ballcock or disposal. Before issuing the permit, the city must confirm with the Texas State Board of Plumbing Examiners (TSBPE) that the Responsible Master Plumber has insurance on file, and installed work is checked by a licensed plumbing inspector. TSBPE adopts the Uniform and International Plumbing Codes, and cities may amend them for local concerns.

Owners can do plumbing on their own homestead without a state license, but check the city's permit and inspection rules with the permit center first.

The city says flooding comes mainly from the San Marcos River, the Blanco River and Purgatory Creek, and that floodwater can cover many blocks three or four feet deep. In November 2001 the Blanco flooded within an hour of a thunderstorm starting. If floodwater reaches your home, have the water heater, drains and lower supply lines checked. The city provides elevation certificates and flood map information; ask the permit center what rebuilding rules apply before a plumber starts replacing pipe in a flooded home.

Cold snaps matter too. Texas health officials confirmed 246 deaths related to the February 2021 winter storm. Ask your plumber to check exposed attic and exterior lines in the fall, and know where your shut-off valve is. A burst pipe costs $400 to $2,000 to repair nationally, according to HomeGuide, or about $150 to $250 per linear foot.

SMTX Utilities provides city water and wastewater, pumping groundwater from the Edwards Aquifer. Ask SMTX Utilities about a leak at the meter or the main; a licensed plumber handles the pipes in your home.

San Marcos Stage 3 irrigation limits

As of October 22, 2026, the city was in Stage 3. Hose-end and automatic sprinklers can run only one day every other week on your designated weekday, before 10 a.m. or after 8 p.m.; drip or soaker lines one day a week; hand watering any day in those hours. With so few watering days, a broken head or leaking valve is worth fixing quickly.

The Edwards Aquifer Authority moved its permit holders in the San Antonio Pool, including parts of Hays County, back to Stage 2 effective October 5, 2026. That stage governs well permit holders; city customers follow the city's own watering stage.

Backflow testing in San Marcos

If your irrigation system has a backflow prevention assembly, anyone testing or repairing it in Texas must hold a TCEQ Backflow Prevention Assembly Tester license, valid three years.

1. Read the paperwork. Every written Texas plumbing proposal, invoice or contract must show the Responsible Master Plumber's name and license number and TSBPE's name, address and phone. You should get an invoice at the end.
2. Search TSBPE. The Public License Search works by name, license number, city or county. TSBPE also runs a Find-a-Plumber map built from the same data.
3. Confirm insurance. An RMP must keep at least $300,000 of commercial general liability insurance on file.
4. Look at the van. It should carry the company name and the RMP's license number.

San Marcos quotes vary, so compare them with HomeGuide's national figures, which put plumbers at $45 to $150 an hour, typical jobs at $125 to $450 and service calls at $50 to $200, usually covering the first hour. The Texas plumbing guide has the full cost guide. Complaints go to TSBPE at (512) 936-5200.

Book heating and cooling work with San Marcos AC repair. Utility, flood and permit rules are on the San Marcos hub, and Kyle plumbers cover the city to the north.