Is My Water Hard or Soft? Find Out in 60 Seconds
The fastest method (free): Search Google for your city name plus "water quality report" or "CCR". Every US water utility publishes an annual Consumer Confidence Report that lists hardness. This takes 2 minutes and costs nothing.
Method 1: Check Your City Water Report (Free, 2 Minutes)
Every US water utility is required by law to publish an annual Consumer Confidence Report (CCR) that includes water quality data including hardness. This is the most accurate source for municipal water users because it reflects actual measurements from your water supply.
- Search: [Your city name] water quality report CCR or [Your city name] consumer confidence report
- Look for "hardness" in the report. It may be listed as "Total Hardness" in mg/L or PPM, or as "Grains Per Gallon (GPG)"
- Note the range given (water hardness fluctuates seasonally)
Most city utility websites have a dedicated water quality page. If you cannot find it, try calling your city's water utility directly - they are required to provide it.
Well water users: If your home uses a private well, there is no public report for your water. Use Method 2 or Method 3. Well water hardness can vary significantly even between neighboring properties.
Method 2: Water Hardness Test Strip ($12 to $27)
Test strips give a quick at-home reading that is accurate enough to guide most treatment decisions. They will not give you lab-grade precision but they will reliably tell you whether you have soft, moderately hard, hard, or very hard water.
- Purchase test strips (see our test kit recommendations)
- Fill a clean glass with cold tap water from the tap you use most (kitchen or bathroom)
- Dip one strip for exactly 2 seconds
- Remove and hold horizontally, do not shake
- Compare color to the chart after 60 seconds in natural light
- Record your result in PPM
Our recommended strip kit: JNW Direct 150-strip kit on Amazon - tests 0 to 425 PPM with 150 strips per kit.
Method 3: Certified Lab Test ($40 to $150)
A mail-in lab test gives you specific mineral concentrations, not just a general hardness reading. This is worth doing if you are planning to buy a whole-house water softener (accurate sizing requires accurate data) or if your water has unusual characteristics like high iron, sulfur smell, or discoloration.
Services like Tap Score send you a sample collection bottle, you mail a water sample, and you receive a certified lab report within a few days. The results will tell you exact calcium and magnesium concentrations plus dozens of other parameters.
What Your Result Means
| Your Result | Classification | What You Will Notice | Recommended Action |
|---|---|---|---|
| Under 60 PPM (3.5 GPG) | Soft | Good lather, no scale, hair and skin feel fine | No treatment needed for hardness |
| 61 to 120 PPM (3.5 to 7 GPG) | Moderately hard | Some scale on fixtures, reasonable lather | Shower filter is a reasonable first step |
| 121 to 180 PPM (7 to 10.5 GPG) | Hard | Noticeable scale, soap scum, hair and skin issues | Shower filter for chlorine; water softener if budget allows |
| Above 180 PPM (10.5+ GPG) | Very hard | Heavy scale, significant hair and skin effects, appliance damage | Water softener strongly recommended |
What to Do Next Based on Your Result
If your water is soft (under 60 PPM)
You do not have a hard water problem. If you are still experiencing hair or skin issues, the likely culprit is chlorine or chloramines in your municipal water. A shower filter that reduces chlorine may help. Read our shower filter guide.
If your water is moderately hard (60 to 120 PPM)
You are in the range where some treatment is helpful. A shower filter will improve hair and skin by reducing chlorine. For appliance protection, adding a water softener is worthwhile but not critical. A chelating shampoo used monthly will address any hair mineral buildup.
If your water is hard or very hard (above 120 PPM)
You need a water softener for a complete cure. Shower filters provide partial relief by reducing chlorine, but they do not address the calcium and magnesium causing most of your problems. Read our water softener guide to find the right system for your home. Also use a chelating shampoo monthly to remove existing mineral buildup from your hair.
Divide your PPM reading by 17.1 to get GPG. Example: 170 PPM divided by 17.1 equals approximately 10 GPG (hard). This conversion matters when sizing a water softener, since softeners are rated in grains removed per regeneration cycle.
Use the higher end of the range for sizing a water softener. Softeners should be sized to handle your water at its hardest. City reports often show a range - for example "average 140 PPM, range 90 to 210 PPM." Use the 210 PPM figure when calculating grain requirements. If you size to the average and hit a high-hardness period, the softener will regenerate more frequently and may not fully soften your water.
Last updated: April 2026