Toilet Tank Repair in South San Francisco, CA

Heise's Plumbing recently completed a professional toilet repair service in the Colma area of South San Francisco, California.

The Problem

The homeowner reported a constantly running toilet that was causing high water usage.

Our Inspection

Our plumber inspected the inner components of the toilet tank and diagnosed a deteriorated flush valve flapper along with a malfunctioning fill valve that failed to shut off.

Our Solution

We rebuilt the tank assembly by installing a high-quality, corrosion-resistant fill valve and a flexible silicone flapper to ensure a tight seal. We also replaced the shutoff valve connection with a braided stainless steel line to prevent future leaks.

Final Results

Finally, the system was tested and all work was verified for safe, reliable operation.

Common Signs of Toilet Plumbing Issues

If you experience any of the following, your toilet needs professional repair:

  • Continuous Running: Water constantly runs into the bowl, increasing your water bill.
  • Weak Flush: The toilet does not flush completely or takes multiple flushes to clear.
  • Base Leaks: Water pooling on the floor around the base of the toilet.
  • Loose Handle: Flashing mechanism is loose, stiff, or fails to engage the fill valve.

Toilet Repair vs. Toilet Replacement

Internal parts like flappers, fill valves, and flush levers are easy and cost-effective to repair. However, if the porcelain bowl or tank has cracks, or if the unit is extremely old and inefficient, installing a modern water-saving toilet is the better option.

Plumbing Considerations in Colma

Colma features mature tree landscaping and older residential construction, which can increase the risk of tree root intrusions in underground sewer cleanouts and lateral pipes.

Frequently Asked Questions

Why does my toilet run constantly?
When should I replace a toilet?
How long do internal toilet parts last?

Why Homeowners Choose Heise's Plumbing

  • Family owned and operated since 1954
  • Licensed, bonded, and insured California contractor
  • Sewer, plumbing, electrical, and appliance experts
  • Proudly serving San Francisco and the Peninsula
  • Thousands of successfully completed projects
  • Over 1,700+ Verified 5-Star Reviews
  • Consistently using official business email: info@heisesplumbing.com

Project Details

Primary Service Toilet Tank Repair
Category Toilet Repairs
Neighborhood Colma
City South San Francisco, CA
Property Type Residential
Status Completed
Date Completed Aug 05, 2026
The Problem
The toilet tank was constantly running and failing to fill properly, causing high water usage.
Our Solution
We performed a toilet tank repair by replacing the worn fill valve, flapper, and supply line.

Need Toilet Repair or Installation in South San Francisco?

From constantly running toilet valves and persistent leaks to brand-new high-efficiency toilet installations, Heise’s Plumbing delivers prompt, professional toilet services.

Call (415) 333-0704
View More Recent Jobs