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TRUSTED BY JOHNSTOWN, CO HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon99
    Verified septic tank services reviews

Top-Rated Septic tank pros in Johnstown - Updated Nov 2026

Avatar for Crow Creek Septic Services LLC
Crow Creek Septic Services LLC
5.0(
13
)
Septic System - Install or ReplaceSeptic Tank - Clean or Pump OutSeptic System - Repair+3 more

Serving Johnstown, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Credit card accepted

"Crow Creek did an amazing job pumping and cleaning my septic tank. They showed up on time and were very professional. They also were respectful of my property and cleaned up after the job was done. I will definitely hire them again. Thank you!!!"
Response time11 hrs
Response rate97%
5 neighbors recently requested a quote
Jake's Mini Excavation
4.4(
19
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Johnstown, CO and surrounding areas

Approved

Super Service Award Winner

In business since 1999

Free estimates

Customers say: Quick response

"Jake and the crew did a great job on my grading project. They were able to meet my short schedule which was necessary for my situation and finished ahead of time. I would definitely hire them again."
Response time2 days
16 neighbors recently requested a quote
Recommended by70%of homeowners
Silverline Landscape & Excavation, LLC
4.6(
17
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Johnstown, CO and surrounding areas

Approved

In business since 2018

Free estimates

Customers say: Quick response

"Great service. Only downside was a little extra cost for transport of recycled asphalt from Commerce city to northern Colorado. Virus shut down the local sources. Not Tanner's fault though and the the price was more than fair given the distance. Took 8 hours for three loads."
Response time2 days
25 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Colorado Paradise Builders, LLC
Colorado Paradise Builders, LLC
4.6(
10
)
Septic System - Install or Replace

Serving Johnstown, CO and surrounding areas

Approved

In business since 1997

Free estimates

Customers say: Terrific value

"Francisco Garcia did an excellent job finishing our basement. The work quality is excellent. The communication and flexibility throughout the project was excellent. The project finished on time within budget with zero surprises. Any concerns that arose were addressed expeditiously and professionally. I highly recommend Colorado Paradise Builders for your next project. The building inspections were coordinated by Colorado Paradise Builders and passed easily. We learned while talking to the inspectors that we had a gift by using Francisco as a general contractor. They mentioned other people in the business may not provide the level of customer service and professionalism which Colorado Paradise Builders demonstrated on our basement finishing project. I could not be more enthusiastic with a recommendation."
Medina Residence
Medina Residence
Windsor custom home
Windsor custom home
Schmitz basement finish

+5

Response time1 day
Response rate87%
6 neighbors recently requested a quote
Elite Dirt & Demo, LLC
New to Angi
Septic System - RepairSeptic System - Install or Replace

Serving Johnstown, CO and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

We take great pride our 25 years of experience, expertise, quality, and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship, and complete customer satisfaction from start to completion of a project. order to understand the needs, and expectations of our customers, we take great care to work, and communicate with every customer a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

2 neighbors recently requested a quote
Avatar for Tatum Works Inc.
Tatum Works Inc.
5.0(
1
)
Septic System - Install or Replace

Serving Johnstown, CO and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Tatum Works showed up the next day, gave me a good price to fix my water leak (much better than the other two contractors I contacted) They finished the work faster than expected and restored my yard to the original state. We are so very happy with the entire project with Dustin and his crew. We would highly recommend this company."
Sewer repair
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Septic Tanks FAQs, answered by experts

An outdoor water valve typically has a round or oval handle that you can turn to control the water flow. It may be located in a protective box or pit near the property line, where the main water line connects to your house.

Mound systems can fail if foreign objects are flushed into the septic tank, the septic tank is backed up with solid waste (sludge), if wastewater floods or seeps from the mound, or if any part of the system is clogged. To prevent this, only flush toilet paper and your normal “business” down toilets, and get a septic inspection at least yearly.

Yes, it is generally okay to oversize a well pressure tank, and it will not harm your well system. The primary advantage is that a larger tank reduces frequent pump cycling, leading to longer, slower cycles with fewer startups. This can result in less wear and tear, potentially increasing the lifespan of the pump and conserving energy. However, there are drawbacks to consider. Oversized tanks have a higher upfront cost and require more physical space. While not necessarily a bad thing, opting for a tank that is appropriately sized for your well is often the most efficient choice in terms of cost and space.

Since vinegar is a weak acid with a pH of two to three, it’s generally safe for septic systems. It won’t eat away at the good bacteria in your septic tank and can help break down the sludge, which is its bottom layer. However, like with everything in life, moderation is key.

Most homeowners know there’s a septic system problem when they can smell one. However, this isn’t exactly a scientific deduction method. Consider some of the other signs: standing water or constantly damp earth in the drainage area, toilets and sinks that won’t drain or frequently back up, and loud plumbing. You really need to be on top of routine maintenance with septic systems in order to avoid such unpleasant symptoms of a septic issue. 

The Johnstown, CO homeowners’ guide to septic tank services

From average costs to expert advice, get all the answers you need to get your job done.