National Backflow Prevention Day – Aug. 16, 2026

National Backflow Prevention Day
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AppreciationCareersSafety
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United States
Date change rule:
Every August 16
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National Backflow Prevention Day is observed every August 16, recognizing the vital role of backflow preventers and the skilled professionals who maintain them. This day spreads awareness about safeguarding our drinking water from contaminants. Join us in appreciating these unsung heroes and learning more about water safety.

Want to sponsor National Backflow Prevention Day? Learn how

Expected National Backflow Prevention Day Deals

On National Backflow Prevention Day, the focus shifts from commercial deals to appreciation and education within the plumbing and water safety industries. Organizations like the ASSE International and the American Water Works Association (AWWA) often promote educational webinars, certification discounts, and industry events to support professionals. Training providers such as the Backflow Prevention Institute may offer special rates on courses. Manufacturers like Watts Water Technologies and Zurn Water Solutions might highlight their commitment to product innovation and safety standards. Local plumbing businesses are encouraged to offer free inspections or educational materials to their communities. We will update this page with confirmed live programs as August 16 approaches.

Platform Guide for National Backflow Prevention Day

LinkedIn

Tag National Today (linkedin.com/company/nationaltoday) and use #BackflowPreventionDay. Share insights on water safety regulations or career opportunities in the field.

X/Twitter

Mention @NatlToday and use #BackflowPreventionDay. Tweet about the importance of clean water and the history of backflow prevention.

Facebook

Mention National Today (facebook.com/nationaltoday) and use #BackflowPreventionDay. Post educational graphics or videos explaining how backflow prevention works.

Social Media Tips for National Backflow Prevention Day

Individuals

Learn about backflow prevention devices in your home or community. Support local plumbers and water safety initiatives, and share information with friends and family.

Creators

Produce short, informative videos explaining backflow prevention concepts. Interview local plumbers or water utility experts to highlight their work.

Brands

Water utilities, plumbing companies, and device manufacturers can run awareness campaigns. Offer educational resources, host webinars, or sponsor community water safety events.

Partners & Brands for National Backflow Prevention Day

  1. ASSE International

    Founded in 1906, ASSE International is a professional organization dedicated to the advancement of plumbing and mechanical systems. It develops standards for backflow prevention device performance and professional certification.

  2. Watts Water Technologies

    Established in 1874, Watts is a global manufacturer of products and systems that manage and conserve water. They are a leading provider of backflow prevention assemblies for commercial and residential applications.

  3. Zurn Water Solutions

    Zurn Water Solutions, founded in 1906, is a leader in smart, efficient water solutions for commercial, industrial, and institutional markets. They offer a comprehensive range of backflow prevention products and related services.

  4. American Water Works Association (AWWA)

    The AWWA, founded in 1881, is an international nonprofit scientific and educational organization dedicated to improving water quality and supply. It provides resources and advocacy for safe drinking water, including backflow prevention.

  5. Backflow Prevention Institute

    The Backflow Prevention Institute (BPI) provides comprehensive training and certification for backflow prevention assembly testers and repairers. Their programs ensure professionals meet industry standards for water safety.

  6. Apollo Valves

    A division of Conbraco Industries, Apollo Valves has been manufacturing high-quality flow control products since 1928. They are well-known for their extensive line of backflow preventers used in various industrial and commercial settings.

  7. Plumbing-Heating-Cooling Contractors National Association (PHCC)

    Established in 1883, PHCC is the oldest trade association in the construction industry. It advocates for the plumbing, heating, and cooling industry, providing education, training, and resources for professionals, including those in backflow prevention.

National Backflow Prevention Day Hero

Frank R. King

Frank R. King was a public health engineer who played a pivotal role in the aftermath of the 1933 Chicago World's Fair amoebic dysentery outbreak. His meticulous investigation revealed that faulty plumbing and cross-connections were responsible for contaminating the drinking water supply. King's work highlighted the critical need for robust backflow prevention measures and led to significant advancements in plumbing codes and public health standards, preventing countless future incidents.

History of National Backflow Prevention Day

‘Backflow’ refers to an unwanted water flow in the reverse direction. It is caused by cross-connections that may allow contaminants to flow into the drinking water supply. Backflow poses serious health risks associated with the contamination of potable water. Countries around the world, thus, have safety standards in place to avoid backflow. Devices known as ‘backflow preventers’ are used to prevent contamination. Professionals, like plumbers, ensure the prevention of backflow to the maximum extent possible.

National Backflow Prevention Day was first announced in March 2021 by Watts Water Technologies to appreciate backflow prevention and cross-connections control. August 16, 2021, saw the first National Backflow Prevention Day and celebrated the “unsung heroes,” as they put it, who ensure the prevention of backflow through backflow prevention technologies.

Watts Water Technologies specifically chose the holiday date to mark one of the most tragic backflow incidents in the U.S. nearly a century ago. The 1933 Chicago World Fair brought thousands of people to visit the city. Several of them decided to stay in two popular hotels that shared a rooftop water source. This cross-connection, unfortunately, led to dysentery contamination in the water supply of the hotels. This contamination led to over 2,000 individuals falling ill and about 98 passing away.

National Backflow Prevention Day timeline

1933
The Chicago Backflow Incident

On August 16, 98 people pass away due to a backflow incident during the Chicago World Fair.

1974
The Safe Water Drinking Act

Congress establishes the Safe Water Drinking Act.

2021
National Backflow Prevention Day

Watts Water Technologies announces National Backflow Prevention Day in March.

2021
The First Observance

The first National Backflow Prevention Day is observed on August 16.

How Businesses Can Celebrate National Backflow Prevention Day

Local plumbing companies and water utilities can lead the observance of National Backflow Prevention Day by hosting free educational seminars for homeowners on the importance of annual backflow testing. They can also offer discounted inspection services or provide informational brochures to raise public awareness. Manufacturers of backflow prevention devices can engage with their professional networks through webinars, showcasing new technologies and best practices. Partnering with local schools for water safety presentations can also help educate the next generation on this critical public health issue.

National Backflow Prevention Day FAQs

When is National Backflow Prevention Day?

National Backflow Prevention Day 2026 falls on a Sunday, August 16. This annual observance highlights the critical role of backflow preventers in safeguarding our drinking water supply.

Why is backflow prevention important?

Backflow prevention is crucial because it stops contaminated water from flowing backward into the clean drinking water supply. This protects public health by preventing the spread of harmful chemicals, bacteria, and other pollutants that could cause illness or even death.

What is a backflow preventer?

A backflow preventer is a mechanical device installed in a plumbing system to prevent the undesirable reversal of water flow. It ensures that water only moves in one direction, preventing contaminated water from mixing with potable water.

Is backflow prevention regulated?

Yes, backflow prevention is heavily regulated at federal, state, and local levels. The Safe Drinking Water Act (SDWA) provides a framework, with states and municipalities enforcing specific codes and requiring regular testing and maintenance of backflow prevention devices.

How to Observe National Backflow Prevention Day

  1. Thank your local water quality professionals

    One of the main objectives of this day is to honor water quality professionals. On this day, thank your local water quality professional or plumbers for the work they do to keep you safe.

  2. Spread awareness

    To spread awareness about backflow prevention and preventers, take a picture of your nearest backflow preventer and share it on social media. You can also share information about the Safe Drinking Water Act.

  3. Attend webinars

    To ensure that you’re as knowledgeable about the topic as you can be, attend a webinar on backflow prevention. Knowledge is power, and the more you know about water safety practices, the better.

5 Interesting Facts About Plumbing

  1. The first evidence of plumbing

    The first evidence of plumbing can be dated back to 3000 B.C. to the Indus Valley Civilization, South Asia.

  2. The first flush

    The first flushing toilet was invented in 1596 by John Harrington in England.

  3. Plumber’s etymology

    The word ‘plumbing’ comes from the Latin word ‘plumbum,’ meaning ‘lead.’

  4. The single-handle faucet

    The single-handed faucet was invented in 1939 by American inventor Al Moen.

  5. The first fire sprinkler system

    The world’s first fire sprinkler system was invented by an English soldier, publisher, inventor, and rocket artillery pioneer, Sir William Congreve.

Why National Backflow Prevention Day is Important

  1. It brings attention to an important process

    Backflow prevention is an extremely important process and keeps us all safe. National Backflow Prevention Day brings public attention to it.

  2. It appreciates essential service workers

    National Backflow Prevention Day is a day of appreciation. We absolutely love that the holiday honors professionals who are very often overlooked and undervalued.

  3. More awareness means more safety

    The greater public awareness is about the dangers of backflow, the more vigilant we are likely to be. It is also a wonderful day to learn about new backflow prevention technologies available.

National Backflow Prevention Day dates

Year Date Day
2026 August 16 Sunday
2027 August 16 Monday
2028 August 16 Wednesday
2029 August 16 Thursday
2030 August 16 Friday