What Our Clients Say
4.8 / 5 From 8.2k Reviews

Harts forever Warranty
- On Select Equipment and Services*
- Lifetime Warranty on Parts and Labor*
- Transferrable*
*Call for details
Fixing Drain & Sewer Problems Before the Tank
Plumbing for Septic Systems in Renton
If your Renton-area home is on a septic system and you’re noticing gurgling toilets, slow drains, or backups, it might not be your tank, it could be a plumbing issue in the line leading up to it.

4.8 / 5 From 8.2k Reviews











Save On Septic
Offers & Discounts
Check out the current promos and coupons from Harts Plumbers, Electricians, & HVAC Technicians.
$93
or it's
Free
Clogged Drain Special
$250
OFF
Tankless Water Heater
$100
OFF
Standard Water Heater
5%
OFF
Heroes Discount
$89
OFF
Plumbing Service
$775
OFF
Drain Cleaning
Free
Water Quality Test
$93
or it's
Free
Clogged Drain Special
$250
OFF
Tankless Water Heater
$100
OFF
Standard Water Heater
5%
OFF
Heroes Discount
$89
OFF
Plumbing Service
$775
OFF
Drain Cleaning
Free
Water Quality Test
Renton Harts Plumbers, Electricians, & HVAC Technicians
- Open 24/7
Call Us Today
4.8 / 5 From 8.2k Reviews

Renton Sewer & Drain Services
What We Do
Fixing Plumbing Issues Before The Tank
✅ What Harts Repairs:
- Sewer line clogs and root intrusions
- Broken, cracked, or collapsed pipes
- Sewer camera inspections
- Blocked drains in kitchens, bathrooms, and laundry rooms
- Hydro jetting and advanced clog removal
- Sewer venting issues and odor diagnostics
- Sump pump and gray water line problems
🚫 What We Don’t Do:
- Septic tank pumping or cleaning
- Septic inspections or permitting
- Drain field installation or replacement
- Tank baffle or riser work
Not Sure if It’s Plumbing or Septic? We’ll Find Out.
Before you call a septic company, let Harts inspect your plumbing. We’ll run a sewer camera, evaluate your system, and give you an honest diagnosis. If it’s something we can fix, we’ll take care of it. If not, we’ll point you to the right septic provider.
Call Harts today for expert plumbing help in septic-connected Renton homes.

What to Watch For
Plumbing Problems in Septic Homes:
Septic system homeowners often assume the worst, but not every drainage issue means your tank is full or failing. In many cases, the problem is in your indoor plumbing or sewer line.
Common signs of plumbing-related issues in septic-connected homes include:
Toilets that gurgle or bubble
Wastewater backing up into tubs or showers
Drainage problems after running the washer
Unpleasant odors coming from drains
Only one or two fixtures acting up
Consistently slow-draining sinks or showers
If you’re seeing these signs in your Renton home, it’s time to call Harts. We’ll determine if the problem is in your system or in your plumbing leading to the tank.
Harts Plumbers, Electricians, & HVAC Technicians Renton
Reviews

Choose Harts
Trusted Septic System Plumber
Renton has a mix of sewer and septic properties — especially in the East Renton Highlands, Maple Heights, and unincorporated King County areas. If your property isn’t tied to city sewer, chances are you’ll deal with plumbing issues before the tank eventually.
Why Renton-area homeowners choose Harts:
-
Local, licensed plumbers with septic home experience
-
Fast response times and no runaround
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Honest diagnostics with clear next steps
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Camera inspections to find the issue quickly
-
Guidance on when to contact septic professionals
Call a Plumber First
Serving Septic-Connected Homes
While most of Renton is connected to the city’s sewer system, septic tanks are still common, especially in older neighborhoods and unincorporated areas outside the city.
Homes in places like:
- Maple Heights-Lake Desire
- East Renton Highlands
- Fairwood
- Talbot Hill
- East-Hill Meridian
If you’re unsure whether your home has a septic system, our plumbers can still help. We specialize in plumbing issues that happen before the tank, and can help you determine the source of the issue quickly and clearly.

Forever Covered.
Forever Comfortable.
The Harts Forever Warranty
At Harts Plumbers, Electricians, & HVAC Technicians, we stand behind the quality of our work with our Harts Forever Warranty, ensuring peace of mind forever.
Our warranty covers the following equipment and services:
- Furnaces
- Air Handlers
- Air Conditioners
- Heat Pumps
- Mini Splits
- Tank Water Heaters
- Tankless Water Heaters
- Whole Home Water Repipes
- Whole Home Sewer/Waste Repipes
- Main Water Service Replacement
- Full Sewer Replacement
- Electrical Panels
- Whole Home Generators
- Whole Home Rewires
Renton
Home Services
Plumbing
Our expert plumbing service offers reliable repairs, installations, and maintenance for homes and businesses. Trust us for efficient, professional solutions to all your plumbing needs.
Sewer & Drain
Our sewer technicians ensure your system flows smoothly, preventing backups and damage. Trust our expertise for fast, reliable, and effective sewer and drain solutions.
Electrical
Our residential electrical technicians specialize in home wiring, panel upgrades, and efficient lighting. Trusted professionals, ensuring safety and quality with every project.
HVAC
Our HVAC Technicians offer expert solutions for heating, ventilation, and air conditioning issues, ensuring efficient, prompt service to keep your environment comfortable.
Contact Us Now
Renton Harts Plumbers, Electricians, & HVAC Technicians
- Open 24/7
Call Us Today
4.8 / 5 From 8.2k Reviews

Having septic system plumbing problems?
Call Harts
Start with Harts. We’ll run a sewer line inspection, identify the problem, and get your septic-connected plumbing flowing again, no guesswork, no delays.