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Wastewater and Sewage Treatment

Children in bathroom - Wastewater and Sewage Treatment | NSF
Learn how your septic system works, what treatment systems are certified and helpful guidance on water reuse and composting and incinerating toilets.

Our experts explain what certification means and how you can find certified products and systems.

Septic Systems

Learn more about septic systems.

Residential Wastewater Treatment Systems

Discover different types of residential water treatment systems.

Septic Tank Effluent Filters

Find out more about septic tank effluent filters.

Onsite Residential and Commercial Water Reuse Systems

Explore onsite residential and commercial water reuse systems.

Electrical Incinerating Toilets

Learn more about electrical incinerating toilets.

Composting Toilets

Explore the world of composting toilets.

What Is NSF Certification?

Millions of people take the safety of their food, water and consumer products for granted. Why? Because of three letters: NSF. Our certification ensures products meet strict public health standards.
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