Drain Cleaning in San Antonio, TX

Because they are cast iron that has spent sixty years carrying very hard water. Minerals from the Edwards Aquifer plate onto the inside of the pipe, and the iron beneath corrodes into a rough, flaking surface. Together they build a lining that can take a three- or four-inch drain down to a fraction of its size. Cabling punches a hole through the clog but leaves the lining, which is why the same line slows again within months. Hydro jetting scours the scale back to the pipe wall and restores the full diameter. If the camera shows the iron itself has rusted through in places, we will talk about lining or replacing that section rather than jetting a pipe that is already failing.

They are the most common cause of main-line backups in the older parts of the city. Live oaks, pecans and hackberries are all thirsty, and a sewer line is a steady source of water and nutrients underground. Older clay and cast-iron sewer lines have joints every few feet, and as the clay soil shifts, those joints open just enough for a hair root to find its way in. Once inside, the root thickens, catches paper and grease, and eventually plugs the line. We cut roots out with a cable or jetter, then run a camera to find the joint they entered. Cutting is a seasonal fix; sealing or replacing the damaged section is the permanent one, and we will quote both.

For scale, jetting. A cable is the right tool for a soft clog in a single line: hair in a tub, paper in a toilet line, grease in a kitchen run. It bores through the blockage and restores flow. Mineral scale on cast iron is hard and bonded to the pipe wall, and a cable just polishes a channel through it. Hydro jetting uses a high-pressure stream that strips the scale off and flushes it out, which is why a jetted line in an older San Antonio home stays clear far longer. The one caution is pipe condition; on badly rusted cast iron we run a camera first to make sure the pipe can take it. If it cannot, that is a repair conversation, not a cleaning.

Most San Antonio homes built from the 1970s on have one: a capped pipe, usually three or four inches across, sticking a few inches out of the ground near the foundation on the side of the house closest to the street, or sometimes in the front flower bed. Newer homes past Loop 1604 often have a two-way cleanout that lets a cable run toward the house or toward the street. Homes from the 1950s and earlier near downtown frequently have none, which means clearing the main line through a roof vent or by pulling a toilet. If your house has no cleanout, adding one is a modest job and it pays for itself the first time the line needs service. It is also where a plumber should be running a camera from.

Usually yours, unfortunately. When a heavy San Antonio rain saturates the clay, groundwater finds its way into any sewer line with a crack or an open joint and fills it faster than it can drain. A line that is already narrowed by roots or scale goes from slow to backed up in an hour. The city main can surcharge in extreme storms, but a house that backs up in ordinary heavy rain almost always has a defect in its own line. The way to know is a camera inspection after the line is cleared: it shows the crack, the belly or the root mass, and where along the run it is. From there we can quote a spot repair or lining, and the sewer repair options are covered in detail.