Backflow Testing in Lone Tree, CO

Lone Tree has no city backflow program of its own; your water district sets the rules, with Southgate west of I-25 and Parker Water and Sanitation District east of it, where reports go through PWSD's portal from ABPA or ASSE certified testers. For a test, repair or new device, call the number on this page to be connected with a local plumber in Lone Tree.

Backflow depends on the side of I-25

Lone Tree is a planned city at the I-25 and C-470 junction, and its utility providers page splits the city by the interstate. West of I-25, Southgate Water and Sanitation Districts deliver Denver Water drinking water as a read-and-bill distributor. East of I-25, including RidgeGate, Parker Water and Sanitation District (PWSD) serves. Some homes in Terra Ridge along Indian Wells Drive are on Northern Douglas County Water and Sanitation District. We didn't find a Lone Tree backflow program, because the districts run them.

PWSD's state-required program accepts test reports only from ABPA or ASSE certified testers with current calibration, filed through its Backflow Tester Submission Portal. Southgate's user rules make backflow devices the property owner's to maintain, repair and replace; an annual testing rule wasn't confirmed. Southgate also reminds owners that they own the buried water service lines on their property.

What to do now

Find your district. Check the bill or the City's utility providers page.
Read any notice. Note the due date and device listed.
Stop leaks. Close the irrigation shutoff if needed.
Hire the right tester. For PWSD, ABPA or ASSE certified with current calibration.

Call now to be connected with a local plumber in Lone Tree.

(303) 529-9880

Symptoms and likely causes

Symptom	Likely cause
Device leaks when irrigation starts	Freeze damage over winter
Relief port discharging	Sediment on a check or worn relief valve
Failed test, no visible leak	Worn internal rubber parts
Low pressure on one building service	Partly clogged assembly or strainer

Cost factors

District paperwork. PWSD reports go through its portal; Southgate rules may differ.
Repairs. Parts and a retest after a failure.
Freeze damage. Cracked bodies get replaced.
Commercial assemblies. Park Meadows-area and Sky Ridge-area buildings have larger devices.
Permits. Lone Tree requires permits for work on plumbing systems, applied for online through Accela.

Most Lone Tree homes are newer with built-in irrigation, and the grassland bluffs in the south catch wind on cold nights. Drain outdoor devices before the first freeze. West of I-25, Southgate takes water emergency calls at 303-779-0261.

Lone Tree's permit rules also matter for backflow work: the City says replacing plumbing system components needs a permit, though clearing stoppages or repairing drain and supply leaks typically doesn't. Ask the plumber which side of that line your job falls on.

Backflow Testing questions in Lone Tree

How can I tell which water provider serves my address?

In Lone Tree, it depends on the side of I-25: Southgate west, Parker Water and Sanitation District east, and Northern Douglas County W&S for some Terra Ridge homes.

Who is qualified to run the test on my assembly?

In PWSD areas east of I-25, an ABPA or ASSE certified tester with current calibration. West of I-25, ask Southgate.

Who pays for the backflow device and its upkeep?

The owner. Southgate's rules make backflow devices the property owner's to maintain, repair and replace, and owners own the buried service lines too.

Is a permit needed to add or replace a backflow preventer?

Lone Tree requires permits for any work on plumbing systems, including replacements, applied for online through Accela.