Which ZIP code is Black Jack in?
Black Jack uses ZIP 63033, and so does part of Florissant. The post office treats Black Jack as an alias of that ZIP, so a letter may carry either name. That matters when you call, because a ZIP alone does not tell us which city to send a plumber to.
Give us your street and cross street. If you turn out to be on the Florissant side of 63033, the Florissant page covers that area, and the line is the same.
Before we arrive in Black Jack
These steps matter most when the call is at night and the house is dark.
What a small city's housing numbers tell you
Black Jack had 6,634 residents in 2020, down from 6,929 in 2010, and 2,747 housing units, 8.8 percent of them vacant. With a small, long-established housing base, many Black Jack homes may still have original pipes. If your house has slow drains in more than one fixture, that is usually the main line, and we check it with a camera before suggesting work.
The city was named for a grove of blackjack oaks. Mature trees are common in older suburbs, and roots are the usual suspect when a main drain clogs again and again. The camera tells us whether roots have entered a joint, which decides between cleaning the line and repairing it.
Water heater and appliance gas connections follow the manufacturer's instructions and the fuel gas code the local authority has adopted, commonly based on the NFPA 54 standard or the International Fuel Gas Code. Ask the county which edition applies to your address before gas work begins.
Common Black Jack calls and where to read more
Most calls fall into a few patterns. A repeat clog is a job for sewer inspection, a cold shower often means water heater repair, and a bill that climbs for no reason calls for leak detection. Several slow drains at once usually point to drain cleaning on the main line.
| What you notice | What we check first | Likely service |
|---|---|---|
| Several drains slow at once | Main line and cleanout | Drain cleaning |
| Clog returns after a snaking | Roots, a low spot or a cracked pipe on camera | Sewer inspection |
| Cold water only from the shower | Heater power, gas supply, thermostat | Water heater repair |
| Water bill jumps, no visible leak | Meter test, toilet flappers, hidden lines | Leak detection |
Dark house and a flooded floor? Shut the main and call the line.
Call (855) 575-2890Spanish Lake and the apartments nearby
Spanish Lake is an unincorporated community with its own ZIP, 63138, and is a neighbor of Black Jack. Its tract housing arrived in the 1950s and its apartments in the 1970s. If you rent, tell your landlord or manager about the problem as soon as you call us, because a lease often decides who may authorize work.
Cold snaps and your pipes
In January 2024, Missouri American Water crews responded to 16 water main breaks in a single day during a cold snap, and one local plumber reported more than 180 calls in a day. The advice from that week still stands. Know where your shutoff is, and expect trouble when pipes thaw. Frozen lines usually split as they thaw.
If a frozen pipe is still frozen, open the faucet, close the main and call. For a pipe that already split, see burst pipe repair.
Black Jack on the map
Black Jack covers 2.6 square miles, so a street name and cross street place you quickly. Use the map to confirm you are inside the city and not in a neighboring community, and tell us which you see when you call.
Frequently asked questions
Black Jack has one ZIP, 63033, which it shares with Florissant. We cover all of it. Give us your street and cross street so we know which city you are in.
Yes. We answer 24 hours a day, including holidays, and offer same-day appointments when available. Call as soon as water or sewage is out of control.
Spanish Lake uses ZIP 63138 and sits next to Black Jack. Call the same line and tell us the address, and we will confirm whether we can come.
A running toilet or a hidden pipe leak can raise a bill quietly. A meter test with all fixtures off is the first check, and leak detection finds the rest.
Plumbing permits in the St. Louis County area go through St. Louis County. We handle that when a job needs one, so ask when you call.
Questions about your situation? A licensed plumber is on the line any hour.
Call (855) 575-2890