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Backflow Testing in District of Columbia
Backflow Testing across District of Columbia: the 277 ZIP codes and 4 cities we route calls in, and who licenses plumbers in the state.
Free to homeowners in District of Columbia — the contractor pays us for the introduction, you never do.
Who has to test
Our backflow testing coverage in District of Columbia runs to 277 ZIP codes in 4 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 277 ZIP codes across 4 District of Columbia cities, in 1 county.
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 District of Columbia
District of Columbia licenses are issued by the District of Columbia Board of Industrial Trades, which publishes a public search you can use before work begins.
Every District of Columbia county we cover
- District of Columbia County 271 ZIP codes
Washington, Washington Navy Yard, Naval Anacost Annex
What that coverage looks like
The 1 counties in our District of Columbia footprint are served by many separate water suppliers, and each one decides which premises must test and how often. District of Columbia County, with 271 covered ZIP codes, is the largest single block of them; Washington alone holds 265.
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 District of Columbia city we route in
1 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.
- Washington 41%
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.
