The Best Plumbing Contractors in Knoxville, IA

Compare the highest-rated plumbing professionals in Knoxville, Iowa. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Williams Service Company

4.8
(150 reviews)
Verified

A highly-rated, full-service plumbing, heating, and cooling company based directly in Knoxville. They emphasize prompt, professional service for both residential and commercial clients and are known for their emergency response capabilities.

1102 S Fremont St, Knoxville, IA 50138

Specialties & Features

Emergency plumbing repairs
Water heater installation and repair
Drain cleaning

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes
#2

All American Plumbing, Heating & Air

4.7
(80 reviews)
Verified

A well-established provider located in the nearby larger city of Pella, serving the broader region including Knoxville. They offer comprehensive plumbing services and have a strong reputation for quality workmanship and customer service.

212 E 13th St, Pella, IA 50219

Specialties & Features

Residential and commercial plumbing
Bathroom and kitchen plumbing
Pipe installation and replacement

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#3

Dr HVAC & Plumbing

4.6
(200 reviews)
Verified

A prominent Des Moines-based company with a significant service radius that includes Knoxville. They have a large volume of positive reviews and offer a full suite of plumbing services, positioning themselves as a reliable option for more complex installations and repairs.

1321 NE 52nd Ave, Des Moines, IA 50313

Specialties & Features

Leak detection and repair
Sewer services
Water heater installation and repair

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes

Why These Are the Top Plumbing Contractors in Knoxville

** The plumbing market serving Knoxville, Iowa, is characteristic of a smaller regional hub. There is one standout local provider (**Williams Service Company**) that handles a significant portion of the immediate community's needs. For more specialized services or when local capacity is exceeded, residents and businesses reliably turn to established contractors in neighboring Pella and the Des Moines metropolitan area, which is approximately a 45-minute drive away. The competition level is moderate. While there are few direct, head-to-head competitors physically located in Knoxville itself, the presence of several highly-rated regional providers ensures that service quality remains high and pricing remains competitive. Customers have viable options, which helps maintain market standards. Typical pricing is in line with Midwestern averages, with standard service call fees ranging from $75-$150, plus parts and labor. Emergency or after-hours services command a premium, as is standard industry-wide. Overall, the market is well-served by a mix of a strong local business and reputable regional contractors, providing Knoxville with reliable and professional plumbing services.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Knoxville regulations and climate

Frequently Asked Questions About Plumbing in Knoxville

Get answers to common questions about plumbing services in Knoxville, Iowa.

1What are the most common plumbing issues for Knoxville homeowners, especially related to our climate?

The most frequent issues are frozen and burst pipes in winter due to Iowa's harsh freezes, and slow-draining or backed-up sewer lines from mature tree root intrusion in older neighborhoods. In spring, sump pump failures are a major concern due to heavy rainfall and the region's high water table, which can lead to basement flooding. Proactive maintenance like insulating pipes and having your sewer line inspected can prevent these seasonal problems.

2How much should I expect to pay for common plumbing repairs in the Knoxville area?

Costs vary, but regional averages for common services are: unclogging a drain ($125-$250), repairing a running toilet ($150-$300), and replacing a water heater ($1,200-$2,500 installed). Emergency or after-hours calls typically incur a higher service fee. For larger projects like repiping or sewer line replacement, always get multiple itemized estimates from local licensed plumbers, as soil conditions in Marion County can affect excavation costs.

3When is the best time to schedule non-emergency plumbing work in Knoxville?

Schedule routine maintenance and installations in the late spring or early fall. These seasons avoid the peak demand of winter emergencies (frozen pipes) and the busy period for sump pump and outdoor faucet work in early spring. Scheduling during these milder periods often means better availability and potentially more flexible pricing from local plumbers before the seasonal rush hits.

4What should I look for when choosing a plumber in Knoxville, and are there local licensing requirements?

Always verify the plumber holds a valid Iowa State Plumbing License and carries both liability insurance and workers' compensation. For work within Knoxville city limits, check if they also hold a local master plumber license, as some municipalities have additional requirements. Choose a provider familiar with local infrastructure, such as the common pipe materials in older homes and the specific backflow prevention codes enforced by the Iowa Department of Public Health.

5My basement has a floor drain that sometimes emits a sewer smell. Is this a common issue in Iowa homes and what causes it?

Yes, this is a frequent concern, especially in homes with basements. The smell is often caused by a dried-out P-trap in the floor drain, which allows sewer gases to enter. Iowa's seasonal humidity changes can evaporate the water seal. Simply pouring a gallon of water down the drain quarterly can refill the trap. If the odor persists, it could indicate a more serious venting issue or a cracked sewer line, which a local plumber can diagnose.