You care about the water your family drinks—but choosing the right water treatment company to improve it can be surprisingly difficult. Online reviews only tell part of the story, and sales reps often use scare tactics or flashy demos without addressing your actual concerns.
So how do you cut through the noise and find a company that’s truly qualified to treat your water—and stand behind their work?
This guide walks you through exactly what to look for, what questions to ask, and the red flags to avoid when selecting a water treatment company.
✅ 1. Make Sure They’re Certified by the Water Quality Association (WQA)
One of the most important things to look for is WQA certification. The Water Quality Association (WQA) is the leading authority in the water treatment industry, setting ethical and technical standards for companies nationwide.
A WQA-certified company is trained in:
- Accurate water testing
- Proper system design and sizing
- Safe, code-compliant installation
- Long-term maintenance and customer care
If a company isn’t certified, ask why. Would you hire a dentist without a license?
🧪 2. Ask What Type of Water Testing They Offer
Proper treatment starts with proper testing. Many companies rely on simple strip tests or scare tactics (like dropping a coin in your water), but that doesn’t tell the whole story.
A trustworthy water treatment company will:
- Offer lab-grade water testing, not just sales-driven demos
- Explain what’s being tested for (e.g., pH, hardness, iron, chlorine, PFAS, bacteria)
- Provide a written report you can keep
- Use test results to design a custom solution
At Dierolf, every recommendation we make is backed by lab data—not guesswork.
🛠 3. Check That They’re Licensed for Plumbing Work
Water treatment systems connect directly to your home’s plumbing. That means installation requires more than just sales skills—it requires a licensed Master Plumber to ensure everything is up to code.
Many water treatment companies subcontract this part or aren’t licensed themselves. You can even look up plumbing licenses online in most municipalities.
Hiring an unlicensed installer could result in leaks, property damage, or failed inspections—not to mention voiding your system’s warranty.
🌊 4. Look for Experience With Your Type of Water
Is your home on a private well? Are you dealing with municipal chlorine, sulfur smells, or hard water stains?
Choose a company that specializes in:
- Well water (including iron, sulfur, bacteria, and acidity)
- City water (chlorine, chloramine, and PFAS)
- Real estate testing and DEP compliance
- Custom-designed systems—not one-size-fits-all filters
Companies that “dabble” in water treatment often apply the same solution to every home. That’s not just ineffective—it can cause more harm than good.
⭐ 5. Read Their Reviews—And Look for Specifics
Online reviews can be helpful—but only if you read between the lines.
Look for patterns like:
- Did the technician take time to explain the test results?
- Was the system tailored to the customer’s water?
- Are customers still happy with their water months or years later?
- Do they mention pressure-free service and follow-up?
At Dierolf, we’re proud of our 1,000+ 5-star reviews—not just for what they say, but for what they prove about our commitment to education and long-term care.
🤝 6. Ask About Ongoing Service and Support
Water treatment isn’t a one-and-done transaction. Your system will need:
- Annual or biannual maintenance
- Filter replacements
- Occasional retesting as your water conditions change
A good company won’t just install a system and vanish. They’ll offer:
- Flexible maintenance plans
- Easy scheduling
- Transparent service pricing
- A team you can actually reach when you have questions
At Dierolf, our goal isn’t to sell a system—it’s to be your long-term partner in better water.
Final Thoughts: Your Water Deserves Better
Clean water is one of the most important things you can give your family—and choosing the right water treatment company is the first step.
Look for:
- WQA certification
- Verified plumbing licensing
- Custom water testing
- Well and city water expertise
- Stellar, specific customer reviews
- Ongoing support, not just a one-time sale
If that sounds like the kind of company you’re looking for, we’d love to help.
👉 Request your complimentary water test today »
Let us help you get the water you—and your family—deserve.
