Source Water Protection – Protecting drinking water before there's a problem

When you turn on your tap, youÌýprobably don'tÌýthink much about where that water came fromÌýor everything that happened to keep it clean along the way.ÌýThat'sÌýa good thing. Drinking water should feel reliable.Ìý

What many people don't realize is that a lot of work goes into protecting drinking water long before it reaches a treatment plant. This work is called Source Water ProtectionÌýand chances are, you've already benefited from it without even knowing.

What is Source Water Protection?Ìý

Source Water Protection focuses on protecting theÌýsourcesÌýof drinking water, including lakes, rivers, and underground aquifers, before contamination occurs. Instead of reacting toÌýcontamination after it enters the water, Source Water ProtectionÌýpreventsÌýrisksÌýin the first place.Ìý

This includes identifying where drinking water comes from, understanding what activities could pose a contamination risk, and putting plans and policies in place to reduce those risks.Ìý

Why Prevention Matters

Cleaning contaminated water is difficult, expensive, and not always fully effective. Preventing pollution at the source:Ìý

• Keeps drinking water safer,
• Reduces treatment costs,
• Protects water supplies for the long term, and
• Helps avoid emergency situations.

Protection That Happens Behind the ScenesÌý

Source Water ProtectionÌýdoesn'tÌýusually make headlines — andÌýthat'sÌýby design.ÌýIts success is reflected through proactive measures such as:Ìý

• Strategic land-use planning near wells and intakes,
• Policies for storing fuels, chemicals, and waste,
• Spill prevention and emergency planning, and
• Best practices for businesses, farms, and municipalities.

We know these measures are working well, when we don't have any incidents.

Everyday Activities Still MatterÌý

Even with strong protection plans in place, everyday actions still play a role in keeping drinking water clean, including:

• Properly disposing of household chemicals,
• Maintaining septic systems,
• Preventing fuel and oil leaks from vehicles,
• Being mindful of what goes down drains and onto the ground, and
• Applying less road salt.

Small actions, when multiplied across a community, makeÌýa big difference.Ìý

A Shared ResponsibilityÌý

Source Water Protection is a team effort involving municipalities, conservation authorities, businesses, farmers, and residents.ÌýIt'sÌýnot about restricting dailyÌýlife;Ìýit'sÌýabout making informed choices that protect a shared resource.Ìý

The fact that most people never notice this work means it's doing exactly what it is supposed to do.ÌýClean, safe drinking waterÌýdoesn'tÌýhappen by accident.ÌýIt'sÌýthe result of planning, cooperation, and prevention,Ìýmuch of it happening quietly in the background.Ìý

By understanding and supporting Source Water Protection, we help ensure that safe drinking waterÌýremainsÌýsomething we can all count on, today and in the future.Ìý

Mid-Winter Reminder: Salt, Snow, and Protecting Our Drinking WaterÌý

As winter settles in and snow and ice become part of our daily routines, roadÌýsaltÌýand snow removal playÌýan important roleÌýin keeping sidewalks, driveways, and roads safe. However, mid-winter is also a key time to pause and think about how these winter practices canÌýimpactÌýour drinking water sources.Ìý

Why Winter Matters for Source Water ProtectionÌý

It’sÌýeasy to assume that frozen ground protects our water, but winter conditions canÌýactually increaseÌýrisks.ÌýWhen salt is applied to roads, parking lots, and walkways, itÌýdoesn’tÌýsimply disappear. Instead, itÌýbuilds upÌýin snowbanks and on hard surfaces. During warmer days, rain events, or springÌýmelt,Ìýthis salt is carried by runoff into storm drains, creeks, rivers, and groundwater,Ìýmany of which are sources of our drinking water.Ìý

Chloride from road salt is persistent. Unlike some pollutants, it does not break down over time and can gradually accumulate in the environment, making it harder and more expensive to treat drinking water and harming aquatic life.Ìý

Snow StorageÌý

Where snow is piled during winter matters just as much as how much salt is used. Snowbanks oftenÌýcontainÌýa mix of salt, sand, debris, and other contaminants. When snow is stored near catch basins, drainage ditches, watercourses, or wells, melting snow can carry these pollutants directly into water systems.Ìý

Thoughtful snow storage,Ìýaway from storm drains and sensitive areas,Ìýhelps reduce the amount of salt and contaminants reaching local water sources.Ìý

Simple Actions You Can Take This WinterÌý

Everyone has a role to play in protecting drinking water, even during the coldest months. Here are a few easy, effective steps residents can take:Ìý

• Use salt sparingly:ÌýA little goes a long way. One mug of salt is often enough for a standard driveway or sidewalk.Ìý
• Shovel first:ÌýRemove snow and ice mechanically before applying salt—it works better and reduces the amount needed.Ìý
• Sweep up excess salt:ÌýIf salt is visible after ice has melted, sweep it up and reuse it.Ìý
• Choose safer alternatives:ÌýSand or grit can improve traction without adding chloride to the environment.Ìý
• Be mindful near storm drains and wells:ÌýAvoid applying salt near catch basins, ditches, or private wells.Ìý
• Store salt properly:ÌýKeep salt covered and dry to prevent spills and runoff.Ìý

Protecting Water Year-RoundÌý

Winter may feel quiet, but it is a critical time for source water protection. The choices we make now, how we use salt, where we pile snow, and how we manage winter runoff, can all have lasting impacts on the quality of our drinking water.Ìý

By makingÌýsmall changesÌýto our winter habits, we can help ensure clean, safe drinking water for our community today and forÌýour future.Ìý

ProtectingOurWater.ca: A New Resource WebsiteÌý

The Thames-Sydenham Source Protection Region would like to introduce our new resource website, . This website will serve as the education and outreach hub for Source Water Protection in the Thames-Sydenham Source Protection Region. It's delivered in partnership with the ÌÇÐÄÖ±²¥ (UTRCA) and municipal partners to equip residents, businesses, and planners with knowledge and tools to protect our shared water sources.Ìý

Under Ontario's Clean Water Act, 2006, source water protection is the foundational "first barrier" in a multi‑barrier framework to ensure safe drinking water from source to tap. ProtectingOurWater.ca explains:Ìý

• What source water protection is and why it is essential for public health and long-term community resilience.Ìý

• The 21 Drinking Water Threats and what you can do to help mitigate each threat.Ìý

• Private Well best practices.Ìý

• Municipalities in partnership with ÌÇÐÄÖ±²¥ along with their drinking water systems and local hazardous waste depots.Ìý

Learn all about Source Water Protection and the role of Risk Managament Services. Resources like fact sheets, training videos, agriculture and chemical threat guides, spill‑response templates, and FAQs to support landowners and tenants in vulnerable zones.Ìý

What You Can Do:Ìý

• Check if you're in a Vulnerable Area: These are zones around intake or wellhead areas where sensitive activities must follow specific policies.Ìý

• If you own or manage property in a vulnerable area: You may need a Risk Management Plan to ensure compliance with Source Protection policies. Templates and guidance are available on the site.Ìý

• Take action in your daily life: From proper fuel storage to safe pesticide use, winter maintenance in salt‑sensitive areas, and spill prevention.Ìý

• Get involved through outreach materials: Informational videos, infographics, and a toolkit of resources to raise awareness.Ìý

ProtectingOurWater.ca brings together everything from clear explanations, actionable resources, local guidelines, and legal requirements related to Drinking Water Source Protection under Ontario's Clean Water Act, 2006. Whether you're a homeowner, municipal planner, or business owner, this site supports you in being a champion for clean water now and into the future.Ìý

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Protecting Drinking Water in the Summer: Source Water Tips for the Summer!Ìý

As summer temperatures rise, so does our water usage — from watering gardens and lawns to splashing in backyard pools. While enjoying all that the season offers, it is important to remember that our actions can directly impact the safety and quality of our drinking water. The hot weather can increase the risk of contamination, especially near lakes, rivers, and underground aquifers that supply our drinking water.Ìý

Here are a few simple but impactful tips to help protect drinking water sources during the summer months.

1. Be Smart About Lawn Care

A green lawn shouldn't come at the cost of clean water. Over-applying fertilizers, herbicides, and pesticides can lead to them running off during summer rains and entering nearby waterways or soaking into the ground, potentially contaminating local wells or municipal water sources.Ìý

Tips:Ìý

• Use natural or slow-release fertilizers.Ìý
• Avoid applying lawn chemicals before heavy rain is expected.Ìý
• Leave grass clippings on your lawn to naturally fertilize.Ìý
• Choose native plants and grasses that require less water and fewer chemicals.Ìý

2. Store Chemicals Safely

From garage cleaners to pool chemicals, many of us keep potentially harmful substances around the home — especially in the summer. Improper storage can lead to spills and leaks seeping into the ground and reaching water supplies.

Tips:Ìý

• Store fuels, oils, and solvents in labeled, sealed containers away from floor drains and out of direct sunlight.Ìý
• Keep chemicals off concrete or unprotected soil where they can easily leach into the ground.Ìý
• Dispose of old or unused chemicals at your local hazardous waste collection centre — never pour them down the drain or on the ground.Ìý

3. Keep Cottage Septic Systems Healthy

If you're heading to the cottage, your septic system needs some attention. Septic systems that are failing or poorly maintained can leak bacteria, viruses, and nutrients into nearby lakes, rivers, and groundwater.Ìý

Tips:Ìý

• Have your septic tank pumped every 3–5 years (or more often depending on use).Ìý
• Keep trees and heavy vehicles off your septic bed.Ìý

4. Handle Boat Fuel With Care

Summer boating is a Canadian favourite, but improper fuel handling can have serious consequences for our water.Ìý

Tips:Ìý

• Refuel boats away from the water when possible, or use spill pads and drip trays when refuelling on the water.Ìý
• Don't top off the tank — leave room for fuel expansion.Ìý
• Regularly inspect fuel lines and tanks for leaks.Ìý
• Keep a spill kit on board.Ìý

Our drinking water sources, whether lakes, rivers, or aquifers, are vulnerable to contamination from daily activities. By being mindful of how we care for our homes, lawns, and recreational spaces during the summer, we can all help ensure our water stays clean and safe now and for generations to come.Ìý

For more information about how to protect drinking water sources, please visit the .

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Walkerton 25th AnniversaryÌý

May 2025 marks 25 years since the water contamination event in Walkerton, a pivotal moment that reshaped how we approach drinking water safety across the province. This anniversary offers an opportunity to reflect on how far we’ve come in protecting the sources of our drinking water and to recognize the collective effort that continues to strengthen Ontario’s leadership in water safety.Ìý

In response, Ontario took decisive action to ensure a similar situation could never happen again. One of the most significant outcomes was the development and implementation of the Clean Water Act, 2006, which laid the foundation for the Source Water Protection Program, a preventative, science-based approach to safeguarding the lakes, rivers, and aquifers that supply our drinking water.Ìý

This program doesn’t just respond to risks; it works to prevent them. By focusing on the protection of water at its source, the program helps reduce the potential for contamination and lowers the burden on treatment systems. It is one of the key reasons why Ontario is now recognized as having some of the safest drinking water in the world.Ìý

At the heart of source water protection is collaboration. The program brings together municipalities, Indigenous communities, farmers, industries, environmental organizations, conservation authorities, and residents to develop and implement Source Protection Plans. These plans are tailored to the needs of local watersheds and identify activities that could pose risks to drinking water sources, along with policies to manage or eliminate those risks.Ìý

This locally driven model ensures that the people who know the land best are involved in the decision-making process. Over the past two decades, communities across Ontario have worked diligently to map vulnerable areas, assess threats, and build partnerships that protect the health of their water systems.Ìý

Protecting drinking water sources is not the responsibility of any one group; it is a shared commitment. Whether through land use planning, agricultural best practices, or community engagement, every Ontarian contributes to the health and safety of our water.Ìý

As we look ahead, the importance of source water protection will only grow. The work being done today is critical to ensuring that Ontario’s drinking water remains clean, safe, and sustainable for generations to come.Ìý

Twenty-five years of progress have shown what is possible when communities come together with a shared goal. Ontario’s Source Water Protection Program stands as a global example of leadership in proactive water management. It is a legacy of learning, a model of resilience, and a testament to what we can achieve when we work together.Ìý

As we reflect on how this journey began, we also celebrate how far we’ve come and recommit ourselves to the work that continues.Ìý

Source Water Protection Attends Children's Water Festival!Ìý

From May 13th to May 16th, the Thames-Sydenham Source Protection Region proudly participated in the 2025 Oxford Children's Water Festival, held at Pittock Conservation Area. The event provided a fun and educational opportunity for students to explore the importance of drinking water protection and the science behind it.Ìý

Throughout the festival, students engaged in hands-on learning activities that focused on the sources of drinking water and the multi-barrier approach used to safeguard them. One of the highlights included a demonstration about the dangers of improper handling of hazardous household substances—especially dense non-aqueous phase liquids (DNAPLs).Ìý

In a simple yet powerful experiment, students were asked to predict the behavior of a can of Diet Coke and a can of regular Coke when placed in a tank of water. The regular Coke, being denser due to its sugar content, sank to the bottom, while the Diet Coke floated. This visual experiment helped illustrate how heavier-than-water substances, like DNAPLs, behave when they enter the environment.Ìý

Students learned that DNAPLs are especially hazardous because they tend to sink through groundwater and settle at the bottom of aquifers, making them extremely difficult—often impossible—to clean up. These toxic substances can seriously compromise the quality of our drinking water sources. That's why preventing contamination at the source is not only vital for protecting public health but also more cost-effective than remediation after pollution has occurred.Ìý

Events like the Oxford Children's Water Festival play a crucial role in helping the next generation understand the science behind water protection and empowering them to become future stewards of our most precious resource.Ìý