Commercial Plumbing in Littleton, CO

Who do we call for water and who for sewer?

Two different organizations. The city says every Littleton resident is served by Denver Water, and the city's Public Works Department doesn't supply water. Denver Water's lines are 303-893-2444 during business hours and 303-628-6801 after hours. Sewer is a city service for most addresses: Littleton bills for sewer and storm drainage, and wastewater is treated at South Platte Renew, which Littleton and Englewood own together. Sewer emergencies go to the city at 303-795-3959 during normal hours and 303-794-1551 after hours. Some connecting communities are billed by their own sanitation district, and the city's Special District Look Up Map sorts that out.

Is a Littleton mailing address the same as being in the city?

Not always. Littleton ZIP codes also cover unincorporated areas such as Columbine, Ken Caryl and Highlands Ranch, which have their own water and sewer districts. For permits, addresses outside city limits go to Arapahoe, Jefferson or Douglas County, and the city's District Map Tool confirms which jurisdiction applies. For a business, sorting this out first avoids filing a permit with the wrong office.

What permits does commercial work need here?

Littleton's Building and Development Permit Center requires a permit to install, alter, repair or replace any plumbing, gas, mechanical or electrical system inside city jurisdiction. That covers water heaters, gas piping, new fixture layouts and line repairs. The Permit Center is at 303-795-3751. Littleton grew quickly in the 1950s and 1960s, so many commercial buildings near downtown and the older corridors are decades old, and an inspection of drain lines before a remodel can head off surprises.

The city's fact sheet doesn't describe a Littleton backflow program, since water service belongs to Denver Water. If your building has irrigation, fire sprinklers or process equipment, ask Denver Water what backflow assemblies and testing it requires for your account.

One more local note

Gas in Littleton comes from Xcel Energy. If staff smell gas, get everyone out first, then call 911 and Xcel at 1-800-895-2999 from a safe distance. Make sure every shift knows where the building's main water shutoff is too, so a burst pipe or failed heater can be stopped before the plumber arrives.