Understanding Your Water Quality Report

Every year, public water systems are required to send customers a Consumer Confidence Report (CCR) - also known as a water quality report. It lists the contaminants detected in your tap water, how they compare to EPA limits, and where your water comes from. But most homeowners glance at it, see a lot of numbers, and file it away.

That report matters. Here is how to actually read it and understand what is flowing from your faucet.

What the Report Actually Covers

Your CCR breaks down water quality into several categories:

The Two Numbers That Matter Most

Each contaminant listed shows two values:

• Detected Level (or Range): What was actually found in your water
• MCL (Maximum Contaminant Level): The EPA legal limit

Just because something is "below the MCL" does not mean it is ideal. The EPA sets legal limits based on cost and feasibility, not necessarily the level where health effects begin. Some contaminants have no legal limit at all - only a health advisory.

Common Issues in East Tennessee Reports

In our region, we regularly see these issues in municipal water reports:

• Hardness over 7 gpg - causing scale and appliance wear
• Chlorine levels above 2 ppm - creating taste, odor, and byproduct concerns
• Chloramine use - harder to filter than chlorine alone
• Detectable lead in some older service areas - from aging pipes and solder
• Turbidity spikes after heavy rain - indicating filtration challenges

What the Report Does Not Tell You

Municipal reports test water at the treatment plant - not at your tap. Between the plant and your home, water travels through miles of aging pipes, some of which can add lead, bacteria, or sediment. Your home's plumbing and any well water connection also affect what actually comes out of your faucet.

The CCR also does not test for many emerging contaminants like PFAS, microplastics, or pharmaceutical residues - compounds that are increasingly detected in water systems but not yet regulated by the EPA.

Get the Full Picture

Your water quality report is a useful starting point, but it only tells part of the story. For a complete understanding of what is in your water - including contaminants the CCR does not cover - an in-home water test is the best next step.

At Pure H2O Water Systems, our free water test checks for hardness, chlorine, chloramine, iron, pH, TDS, and more - right at your kitchen sink. You will see your results in minutes and get a clear recommendation for any filtration or softening you might need.