Crawl Space Drainage

At Northwest Crawl Space Services, we understand the critical importance of maintaining a dry and structurally sound crawl space within your home. Far more than just an inconvenience, water accumulation in this area can lead to significant damage, surpassing even the destructive potential of rodents. Left unchecked, standing water poses a serious risk, fostering mold growth and jeopardizing the integrity of your entire foundation, often resulting in costly repairs.

Our specialized expertise lies in the installation and meticulous maintenance of advanced crawl space drainage systems. Combining modern drains with sump pump technology, our solutions are tailored to effectively divert ground water away from your crawl space, ensuring its long-term protection and preserving the integrity of your home.

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(888) 246-5837

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Common Reasons for Rain or Ground Water in Your Crawl Space

Poor Drainage

Inadequate grading around the perimeter of your home can lead to water pooling near the foundation, increasing the risk of water seepage into the crawl space.

Leaking Gutters or Downspouts

Damaged or clogged gutters and downspouts can cause rainwater to overflow and collect near the foundation, ultimately finding its way into the crawl space.

Hydrostatic Pressure

During heavy rainfall or periods of high groundwater levels, hydrostatic pressure can build up around the foundation, forcing water through cracks or gaps and into the crawl space.

High Water Table

In areas with a high water table, the natural level of groundwater may rise close to or above the level of the crawl space, increasing the likelihood of water entering the space through the ground or foundation walls.

The Hazards of Standing Water in Your Crawl Space

Mold Growth

Standing water creates a damp environment ideal for mold growth. Mold not only damages building materials but also releases spores that can cause respiratory issues and allergies.

Structural Damage

Prolonged exposure to moisture weakens wooden supports and can lead to structural damage in your home's foundation, floors, and walls.

Wood-Destroying Organism Infestation

Standing water in your crawl space attracts wood-destroying organisms such as termites, carpenter ants, and wood-boring beetles, which thrive in moist environments. These pests can cause significant structural damage to your home by feeding on wooden components.

Odors and Indoor Air Quality

Stagnant water emits foul odors and contributes to poor indoor air quality, leading to discomfort and potential health problems for occupants.

Electrical Hazards

If water comes into contact with electrical wiring or appliances in the crawl space, it poses a risk of electrical shock and fire.

Increased Energy Costs

Moisture in the crawl space can lead to higher humidity levels throughout your home, making it more challenging and expensive to regulate indoor temperatures.

Our Streamlined Process for Crawl Space Drainage

French Drain Installation
  • We excavate a trench along the inner foundation wall.
  • Drain rock and a perforated pipe are laid in the trench to facilitate drainage.
  • A hole is dug to accommodate the basin.
  • We install the basin, lid, and filtration system to effectively capture and filter water.
  • Our team installs the sump pump and check valve to ensure efficient water removal.
  • Additionally, we incorporate a flood alarm system for added security.


*Additional option includes a dual sump pump setup, featuring a secondary pump and battery for backup.

  • Using a PVC pipe, we direct water away from the crawl space.
  • Discharge destinations include directing water towards the street, slope, or existing drain.

We ensure a dry crawl space. no standing water – guaranteed. If water is detected within the warranty period, we promptly return to address the issue and perform any necessary additional work.

Furthermore, we provide emergency response services in the event of a system failure leading to a flood, with our team arriving within hours.

For added security, we install alarm system along with our sump pump. This alarm will alert you to any system failure, allowing you to inform us immediately. Our dedicated team is ready to handle it swiftly and efficiently. Your peace of mind is our priority.

As part of our Annual Maintenance Program, we conduct a thorough yearly visit to ensure your crawl space remains water-free. Our team checks for any puddling, inspects, and tests the system, cleans the basin and the pump, and ensures its functionality for the upcoming year.

*Our annual visit ensures your 10-year warranty stays active, with a set fee of $129.

Hire a certified electrician to Install a dual GFCI outlet directly above the sump pump for a seamless, cord-free connection. It is strongly advised to designate a dedicated circuit for this outlet to prevent overload and power break.

If electrical setup has not been completed prior to installation, we will temporarily connect the sump pump with extension cord to an available existing outlet.

Our Reviews

Frank Hofford
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We recently hired Northwest Crawl Space Services to perform a complete remediation of our crawl space which had a rodent infestation. Lior initially came out and did a thorough assessment and explanation of what work needed to be done. He was very detailed in explaining all work that they would do and the subsequent follow up visits and warranty that was included in the price. The following week Robert and his crew came out to perform the work. They were punctual, courteous and extremely professional in every way. They took caution and care to make sure that the inside of our house was properly masked off and protected as they removed the entirety of the contaminated crawl space insulation etc. Robert provided me with detailed pictures of the finished work and as well as pictures of a couple water pipes that had very small leaks, which I greatly appreciated. As promised, Lior came back out two weeks later to inspect all work and make sure that there were no problems. I highly recommend Northwest Crawl Space Services!
Chris Holt
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I can not say enough good things about Northwest Crawl Space Services. Matan and his team were incredible to work with regarding our rodent infestation in our crawl space. From the bidding process, to the labor, to the follow up and communication, every aspect was professional and done correctly. I highly recommend this company for your crawl space needs.
Michael Hoiland
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Lior and his team were fantastic. They were cheaper than the big name companies and didn't try to upsell me to repairs that didn't need to be done. They took care of the problem quickly and were great with communication and photos of the project as it was being completed. They owner even did a follow up the next day to make sure the job was done correctly. I had a list of questions when the job was done and he already had them all addressed with pictures and videos of everything. They are locally owned and operated which is very important to me. Would highly recommend
Michael Hoiland
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NW Crawlspace is an exceptional company. Matan and his team are experts at repairing Crawlspaces and protecting you from rodent and water Intrusion.. Rob and Leonardo and the team take the quality of their work personally. They are going to do it right and come back to check it for you. We needed a total clean out and sump pump system installed.They worked super hard to have it done by Thanksgiving. We feel like we got a bargain after seeing all that was done. I recommend them if you want your crawlspace worked on or inspected. You will be glad you called them.
Michael Silva
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We had a sump pump fail and ended up with a crawlspace that had at least two feet of standing water. Matan of Northwest Crawlspace Services came out to inspect. After examination, he carefully explained our problem and his proposed solution using easy-to-understand, non-technical language, and then gave us a firm price quote. His professionalism made us feel very much at ease and gave us assurance that we were in good hands. The very next day, a worker was sent to pump the water out of the crawlspace so that work could begin. After the water was gone, a crew of three workers was dispatched to begin the work. Before doing anything, they took great care to install plastic sheeting to protect all of the walls and floors leading up to the crawl space access door. The crew worked diligently throughout the day and completed most of the work. Afterwards, they thoroughly cleaned up, leaving little sign that they had even been there. The following day, they came back to finish the work and replace some duct work that had been damaged by the flooding. A little later, a separate person (presumably a supervisor) came by to inspect the job. We are thoroughly satisfied by the work of Northwest Crawlspace Services and would highly recommend them to other homeowners.

Frequently asked questions

Is a crawl space drainage system necessary if there's only a small amount of water present?

Even small amounts of water in the crawl space can lead to moisture issues, mold growth, and structural damage over time. Installing a drainage system can help prevent these problems and maintain a dry and healthy crawl space environment. It’s important to address any water intrusion promptly to avoid potential long-term consequences.

Several factors could contribute to this sudden occurrence. It’s possible that changes in weather patterns, such as heavy rainfall or melting snow, have led to increased water infiltration. Additionally, shifts in the water table level, which can vary from year to year, may result in water entering your crawl space. Aging drainage systems or shifts in the soil around your home’s foundation could also play a role.

The installation time for crawl space drainage systems varies based on factors like the size of the crawl space and the complexity of the drainage system. For an average-sized house, installation usually takes between 1 to 2 days. Our team can provide a more precise estimate after evaluating your specific requirements.

Signs such as musty odors, visible moisture, or water damage in the crawl space indicate a need for drainage solutions. Regular inspections can also help identify potential issues early.

While DIY installation may seem feasible, it’s best to hire a professional for optimal results. Our team has the expertise and equipment to ensure proper installation and long-term effectiveness of the drainage system.

Crawl space drainage is crucial for preventing water accumulation, which can lead to mold growth, structural damage, and other costly issues in your home.

Get Your Free Quote

Fill out this form and we will contact you within 24 hours.