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Home » Plumbing » Water Treatment

Water Treatment Services in Southwestern Ontario

Clean, reliable water matters — for your health, your plumbing system, and the long-term performance of your home or facility. At Postma Heating & Cooling, Plumbing & Electrical, we provide professional water treatment solutions for residential and commercial properties across Chatham-Kent, Windsor, Sarnia, St. Thomas, and Southwestern Ontario.

If your water tastes off, smells strange, leaves scale behind, or causes ongoing plumbing issues, we help you identify the real problem and fix it properly.

Do You Have a Water Quality Issue?

Many water problems develop gradually and go unnoticed until they start damaging fixtures, appliances, or plumbing systems. Common signs include:

Scale buildup on faucets, showerheads, and glass
Dry or itchy skin after showering
Rust stains or cloudy water
Chlorine or sulphur (rotten egg) odours
Poor-tasting drinking water
Frequent water heater or appliance issues

Municipal water and private wells both come with challenges.

Effective water treatment starts with proper testing, not generic equipment packages.

Our Water Treatment Solutions

We install and service custom water treatment systems based on your actual water conditions, usage, and plumbing layout — not assumptions.

Water Softeners (Hard Water Solutions)

Hard water is common throughout Southwestern Ontario and is a leading cause of scale buildup and premature plumbing wear.

A properly sized water softener can:

Reduce scale buildup in pipes and fixtures
Protect water heaters and appliances
Improve soap efficiency and reduce residue
Improve comfort for skin and hair

Our systems are sized using measured hardness levels and household demand, ensuring long-term performance.

Water Filtration Systems

Water filtration improves water quality by removing sediment, chlorine, and other unwanted contaminants.

Water filtration is well-suited for:

City water with taste or odor concerns
Homes with visible sediment or discoloration
Commercial buildings requiring consistent water quality

We install both whole-home filtration systems and point-of-use solutions, depending on the application.

Reverse Osmosis (RO) Drinking Water Systems

Reverse osmosis systems provide high-quality drinking water by removing dissolved solids, metals, and impurities.

RO systems are commonly installed for:

Drinking and cooking water
Homes concerned about water taste or clarity
Offices and commercial breakrooms

These systems are installed neatly under the sink and require minimal ongoing maintenance.

UV Light Water Treatment (Bacteria Protection)

For properties on private well water, UV treatment provides an added layer of protection against harmful microorganisms.

UV systems help protect against:

E. coli
Coliform bacteria
Other bacteria not removed by standard filtration

UV systems are typically paired with filtration to ensure proper operation and reliability.

Residential and Commercial Water Treatment

We design and install water treatment systems for:

Homes and cottages
Farms and rural properties
Apartment buildings and multi-residential
Restaurants and food service facilities
Medical and dental offices
Commercial and industrial facilities

Commercial systems are designed with flow rates, redundancy, and service access in mind — not residential shortcuts.

Water Treatment vs Plumbing Repairs
What’s the Difference — and Why It Matters

This is where many homeowners get confused.

Plumbing repairs fix damage after it happens.
Water treatment helps prevent that damage in the first place.

Hard water, sediment, and untreated contaminants contribute directly to:

Scale buildup inside pipes
Reduced water flow
Premature failure of water heaters
Leaking fixtures and valves
Increased repair frequency

Water treatment addresses the root cause, while plumbing repairs address the
symptoms.

When combined properly, water treatment helps protect your plumbing system, extend equipment life, and reduce the need for future repairs.

For existing issues, our licensed plumbers can assess and repair damaged components.
Learn more about our full plumbing services here:

View Plumbing Services

Why Water Testing Comes First

Installing the wrong system doesn’t solve the problem — it just adds cost.
Our process begins with proper water testing, allowing us to:

Identify hardness levels, sediment, bacteria, and mineral content
Recommend only what you actually need
Avoid over-treating or under-treating your water

If treatment isn’t necessary, we’ll tell you.

Why Choose Postma for Water Treatment?

Licensed, experienced plumbing professionals
Honest recommendations — no scare tactics
Systems properly sized for long-term performance
Clean, professional installations
Ongoing service and maintenance support
Trusted across Southwestern Ontario

Our approach is simple: test the water, explain the results, and install the right solution.

Frequently Asked Questions – Water Treatment

Do I need a water treatment system if I’m on city water?

Not always. Municipal water is treated, but it can still contain hardness minerals, chlorine, and sediment. Water testing determines whether treatment is needed — and what type makes sense.

How do I know if I have hard water?

Common signs include scale buildup, soap residue, dry skin, and reduced water heater efficiency. Proper testing confirms hardness levels.

Is a water softener safe for drinking water?

Yes. Modern softeners are safe for household use. Many homeowners pair a softener with a reverse osmosis system for improved drinking water quality.

Do I need UV treatment if my well water looks clear?

Possibly. Clear water can still contain bacteria that aren’t visible. UV treatment provides protection when paired with proper filtration.

How often do water treatment systems need maintenance?

Maintenance varies by system. Softeners require salt refills, filters need periodic replacement, and UV bulbs are typically replaced annually. We explain all maintenance requirements upfront.

Can water treatment help reduce plumbing repairs?

Yes. Hard water and sediment accelerate wear on pipes, fixtures, and water heaters. Proper water treatment helps reduce stress on your system and supports long-term plumbing performance.

Book a Water Quality Consultation

If you’re unsure about your water quality, testing is the right first step.

We’ll assess your water, explain the results clearly, and recommend a solution that fits your home or facility.

Same-Day Service

We understand that when you need plumbing repairs or air conditioning repairs, you need the work done quickly. For your convenience, we offer same-day services.

Flat-Rate Pricing

When you hire our plumbers or electricians, you don’t have to worry about any surprises showing up on your bill. We offer flat-rate pricing so there is no confusion later.

Satisfaction Guaranteed

As a local, second-generation family-owned company, your satisfaction is our priority. If you’re not happy with the work, we will make it right!