Backflow Testing in Texas
Backflow Testing across Texas: the 1,353 ZIP codes and 562 cities we route calls in, and who licenses plumbers in the state.
Free to homeowners in Texas — the contractor pays us for the introduction, you never do.
Who has to test
Our backflow testing coverage in Texas runs to 1,353 ZIP codes in 562 cities. Backflow assemblies are required where a premises can push water back into the main, and in a state of large municipalities that duty is usually written into one city-wide water ordinance that applies the same way across tens of thousands of connections.
Source: coverage area as published by our call partner; place and county names from the US Census Bureau.
We route backflow testing calls in 1,353 ZIP codes across 562 Texas cities, in 108 counties.
What this site is
CrossConnect is a referral service, not a contractor. We connect property owners and managers with independent contractors. Backflow assembly testing is normally restricted to testers holding a specific certification and using calibrated equipment, and the report usually has to reach your water purveyor — ask to see the certification and ask who files the report. We carry out no testing, we certify nobody, we do not set prices, and we never charge callers anything. Nothing here selects a device for any installation or states that any assembly is passing.Checking a credential in Texas
Texas licenses are issued by the Texas State Board of Plumbing Examiners, which publishes a public search you can use before work begins.
18 of the 107 Texas counties we cover, from the top of the alphabet
- Andrews County 1 ZIP code
Andrews - Angelina County 9 ZIP codes
Lufkin, Diboll, Huntington, Pollok, Zavalla - Atascosa County 3 ZIP codes
Lytle, Pleasanton, Poteet - Austin County 1 ZIP code
Wallis - Bandera County 4 ZIP codes
Bandera, Medina, Pipe Creek, Tarpley - Bastrop County 8 ZIP codes
Bastrop, Cedar Creek, Elgin, McDade, Paige, Red Rock, Rosanky, Smithville - Bell County 22 ZIP codes
Killeen, Temple, Bartlett, Belton, Fort Hood, Harker Heights, Holland, Little River Academy, Nolanville, Rogers, Salado, Troy - Bexar County 95 ZIP codes
San Antonio, Adkins, Atascosa, Converse, Elmendorf, Helotes, Jbsa Ft Sam Houston, Jbsa Lackland, Jbsa Randolph, Saint Hedwig, Somerset, Universal City, Von Ormy - Blanco County 4 ZIP codes
Blanco, Hye, Johnson City, Round Mountain - Brazoria County 10 ZIP codes
Pearland, Alvin, Freeport, Lake Jackson, Manvel, Rosharon - Brazos County 14 ZIP codes
Bryan, College Station, Millican - Burleson County 5 ZIP codes
Caldwell, Deanville, Lyons, Snook, Somerville - Burnet County 2 ZIP codes
Briggs, Marble Falls - Caldwell County 5 ZIP codes
Dale, Lockhart, Luling, Martindale, Maxwell - Callahan County 4 ZIP codes
Baird, Clyde, Cross Plains, Putnam - Camp County 1 ZIP code
Pittsburg - Chambers County 3 ZIP codes
Anahuac, Mont Belvieu, Wallisville - Cherokee County 2 ZIP codes
Rusk, Wells
89 more Texas counties are inside the coverage area and are not listed here. If your ZIP code is in Texas, the call reaches a contractor.
What that coverage looks like
The 108 counties in our Texas footprint are served by many separate water suppliers, and each one decides which premises must test and how often. Harris County, with 235 covered ZIP codes, is the largest single block of them; Houston alone holds 178.
How a backflow testing job goes
A backflow test is a scheduled job that ends in a document. The assembly is isolated, the differential across it is measured, the result is written down, and the report goes to whoever requires it. A failed test means a repair or a rebuild and then a re-test; it does not mean the premises closes that day.
What the call asks about backflow testing
- What kind of premises it is and what is connected to the supply — irrigation, a boiler, a fire line, a commercial kitchen.
- Who is asking for the test: a water supplier, a health department, or a landlord.
- Whether there is an existing assembly with a serial number on it, and when it was last tested.
Every Texas city we route in
154 cities, ordered by the share of buildings with twenty or more units. Containment assemblies are required building by building, and that is where the buildings are. Each page carries that city’s own numbers and the ZIP codes we route there.
- Addison 54%
- Webster 33%
- Dallas 27%
- Stafford 26%
- Richardson 25%
- Irving 23%
- Austin 23%
- San Marcos 22%
- Houston 21%
- The Colony 20%
- Frisco 20%
- Pasadena 18%
- Grapevine 17%
- Plano 17%
- Lewisville 17%
- Seabrook 15%
- Carrollton 14%
- Galveston 14%
- Euless 14%
- Kingwood 14%
- College Station 14%
- Denton 13%
- Cedar Park 13%
- Grand Prairie 13%
- Allen 12%
- Roanoke 12%
- Waco 12%
- Round Rock 12%
- McKinney 12%
- Coppell 12%
- Texas City 11%
- Fort Worth 11%
- San Antonio 11%
- Lake Jackson 11%
- Mansfield 11%
- Garland 10%
- Huntsville 10%
- Balch Springs 10%
- Bryan 10%
- Rowlett 10%
- Spring 10%
- League City 10%
- North Richland Hills 9%
- Katy 9%
- New Braunfels 9%
- Kemah 9%
- Humble 9%
- Conroe 9%
- Arlington 9%
- Mesquite 9%
- Tomball 9%
- Bedford 9%
- Waller 9%
- Midland 8%
- Temple 8%
- Amarillo 8%
- San Angelo 8%
- Longview 8%
- Baytown 8%
- Pflugerville 8%
- Kyle 8%
- Flower Mound 8%
- Waxahachie 7%
- Haltom City 7%
- Lancaster 7%
- Sugar Land 7%
- Sachse 7%
- Odessa 7%
- Woodway 7%
- Universal City 7%
- Nacogdoches 7%
- Keller 7%
- Belton 7%
- Dickinson 7%
- Lufkin 7%
- Georgetown 6%
- Cedar Hill 6%
- Big Spring 6%
- Cypress 6%
- Deer Park 6%
- La Porte 6%
- Pearland 6%
- Buda 6%
- Hurst 6%
- Van Alstyne 5%
- Hutto 5%
- Kerrville 5%
- DeSoto 5%
- La Grange 5%
- Joshua 5%
- Richmond 5%
- Sherman 5%
- Mineral Wells 5%
- Abilene 5%
- Greenville 5%
- Hillsboro 5%
- Seagoville 5%
- Commerce 5%
- South Houston 5%
- Boerne 5%
- Forney 5%
- Anna 5%
- Rockwall 5%
- Granbury 5%
- Aubrey 4%
- Burleson 4%
- Schertz 4%
- Midlothian 4%
- Magnolia 4%
- Mineola 4%
- Hewitt 4%
- Killeen 4%
- Alvin 4%
- Leander 4%
- Giddings 4%
- Bonham 4%
- Friendswood 4%
- Devine 3%
- Montgomery 3%
- La Marque 3%
- Justin 3%
- Pottsboro 3%
- Gainesville 3%
- Missouri City 3%
- Wylie 3%
- Little Elm 3%
- Princeton 3%
- Weatherford 3%
- Copperas Cove 3%
- Bastrop 3%
- Manor 3%
- Denison 3%
- Helotes 3%
- Dripping Springs 3%
- Fredericksburg 3%
- Southlake 3%
- Wimberley 3%
- Manvel 3%
- Hitchcock 3%
- Converse 3%
- Cleburne 3%
- Spring Branch 3%
- Smithville 3%
- Duncanville 3%
- Center 3%
- Crockett 3%
- Marble Falls 2%
- Melissa 2%
- Crowley 2%
- Huffman 2%
- Azle 2%
- Santa Fe 2%
- Lockhart 2%
- Prosper 2%
Before you call
A test is a scheduled job with a report at the end of it, not a repair. What the report has to show, and who it goes to, are on the pages above.
