What Should Be Done With Concrete and Washout Water?

October 10, 2023Updated April 20, 2026By Nicholas PiskuraReading time: 5 minutes
Concrete slurry dewatering plant
Key takeaways
  • Washout water carries cement, sand, and debris. Recycling it is the best way to manage it.
  • Filter presses turn washout into reusable filtrate and dry, stackable solids.
  • Landfill, sewer, and on-site disposal are fallbacks, and sewer or on-site disposal needs a permit.

What Is Concrete Washout Water?

Concrete and washout water are two of the most common types of waste generated on construction sites. Washout water is the water that is used to clean concrete tools and equipment, and it can contain a variety of pollutants, including cement, sand, and other debris. Concrete is a durable material that is used in a wide variety of construction projects, but it can also be a significant source of pollution if it is not disposed of properly.

Can Concrete Washout Be Recycled?

One of the best ways to manage concrete and washout water is to recycle it. Concrete washout recycling can be done in a number of ways, but the most common method is to crush the hardened concrete and reuse it as aggregate in new concrete mixes. Concrete washout water can also be treated and reused in concrete mixes, but this process is more complex and expensive.

There are a number of benefits to recycling this washout water:

Less landfill wasteIt reduces the amount of waste that is sent to landfills.
Conserved resourcesIt conserves natural resources, such as sand and gravel.
Lower costsIt can save money on construction costs.
Year-end budget planning

What is hauling washout costing you?

Landfill disposal of washout is not the most environmentally friendly option, and it may be expensive. Budgets for next year are being set now: put your own numbers into the filter press cost calculator and see what recovering that water would save.

How Do You Recycle Concrete Washout?

If you are interested in recycling, there are a few things you can do:

  1. 1Find a recycling facility. First, you need to find a concrete recycling facility near you. Many concrete recycling facilities accept concrete washout water as well.
  2. 2Prepare the mixture. Once you have found a concrete recycling facility, you need to prepare the mixture for recycling. This may involve removing any large pieces of debris and screening the material. You may also need to add water to the washout water to make it easier to pump and transport.
  3. 3Transport it. Once the mixture is prepared, you can transport it to the concrete recycling facility. The concrete recycling facility will crush the concrete and process the washout water. The recycled concrete and washout water can then be used in new concrete mixes.

How Do Filter Presses Treat Concrete Washout Water?

Filter presses are a very effective way to treat concrete and washout water. They can produce a high-quality filtrate that can be reused or discharged. The solids produced by the filter press are also relatively dry, making them easy to dispose of or recycle. ChemREADY partners with Matec to provide high-quality filter presses. For how they work, see what a filter press is and how it works.

Here are some of the benefits of using filter presses:

Water conservationFilter presses can help to conserve water by recycling it for reuse in the concrete production process.
Environmental protectionFilter presses can help to protect the environment by preventing cementitious solids from being discharged to sewers or waterways.
Cost savingsFilter presses can help to save money on water and disposal costs.
Concrete slurry dewatering

Turn concrete washout into reusable water

Matec filter presses supplied by ChemREADY produce clean filtrate and stackable solids — making concrete washout recycling simple, efficient, and cost-effective.

Explore Concrete Slurry Solutions →

What Are the Other Options for Disposing of Concrete Washout?

If you are unable to recycle, there are a few other options for disposing of it:

OptionWhat to know
LandfillThis is not the most environmentally friendly option, and it may be expensive.
Sanitary sewerThis is only allowed in some areas, and you may need to obtain a permit from the local sewer authority.
On-siteThis is only allowed if you have a permit from the local environmental agency.
Concrete washout disposal options if you can’t recycle

The best way to manage concrete and washout water is to recycle it, and Matec filter presses are an effective way to do it. It is important to choose the option that is most appropriate for your situation and that complies with all applicable laws and regulations. See ChemREADY’s concrete washout water management for treatment options.

Free on-site filter press analysis

Need a better way to handle concrete washout?

Whether you’re managing washout on a job site or at a production facility, ChemREADY designs complete systems to treat, recycle, or safely discharge concrete wastewater. Start with a free on-site analysis of your washout and process.

Frequently Asked Questions About Concrete Washout Water

What is concrete washout water?

Washout water is the water that is used to clean concrete tools and equipment, and it can contain a variety of pollutants, including cement, sand, and other debris.

Can concrete washout water be recycled?

Yes. The most common method is to crush the hardened concrete and reuse it as aggregate in new concrete mixes. Concrete washout water can also be treated and reused in concrete mixes, but this process is more complex and expensive.

What are the benefits of recycling concrete washout?

Recycling concrete washout reduces the amount of waste sent to landfills, conserves natural resources such as sand and gravel, and can save money on construction costs.

How do filter presses treat concrete washout water?

Filter presses produce a high-quality filtrate that can be reused or discharged, and relatively dry solids that are easy to dispose of or recycle. They help conserve water, prevent cementitious solids from being discharged to sewers or waterways, and save money on water and disposal costs.

Can you dump concrete washout water down the sewer?

Disposing of concrete washout in a sanitary sewer is only allowed in some areas, and you may need to obtain a permit from the local sewer authority. On-site disposal is only allowed if you have a permit from the local environmental agency.

Year-end budget planning

Bring a number to your 2027 budget meeting.

Estimate what hauling and disposing of washout is costing you now, and what recovering that water with a filter press would save.

Talk to a specialist

Want help recovering your washout water?

A ChemREADY dewatering specialist can look at your washout volumes and solids and recommend a system to treat, recycle, or safely discharge it.

About the author

Nick Piskura is the Marketing and Web Development Specialist at ChemREADY who utilizes expertise in digital marketing strategies to provide knowledgeable insights in each segment of our business.

Technically reviewed by the ChemREADY dewatering team.

Questions about your press? Call Talk to a specialist