Water Hardness By Zip Code
Input your zip code and hit the Search button to see if the water in your area is hard or soft.
Here is a sample table of the average US water hardness by zip code and city name that we collected for your reference.
|Water Hardness Level||Water Hardness||By Zip Code||By City Name|
|Moderately hard||65 PPM||10045||Manhattan, NY|
|Hard||149 PPM||19102||Philadelphia, PA|
|Moderately hard||119 PPM||20001||Washington, D.C.|
|Moderately hard||68 PPM||02215||Boston, MA|
|Slightly hard||21 PPM||30301||Atlanta, GA|
|Very Hard||219 PPM||33101||Miami, FL|
|Hard||179 PPM||77001||Houston, TX|
|Slightly hard||21 PPM||72901||Phoenix, AZ|
|Slightly hard||47 PPM||94016||San Francisco, CA|
|Very Hard||292 PPM||88901||Las Vegas, NV|
For example, as the table above, the water hardness of the Manhattan, NY is considered Moderately Hard.
Water Hardness Levels Classification
|Mg/L or PPM||Grains/Gal||Hardness Level|
|0 – 17.1||0 – 1||Soft|
|17.1 – 60||1 – 3.5||Slightly hard|
|60 – 120||3.5 – 7.0||Moderately hard|
|120 – 180||7.0 – 10.5||Hard|
|from 180||from 10.5||Very Hard|
Hard Water Solutions
The USA Water Hardness Facts
32% of the cities (about 145 cities or 2730 Zip codes) have Very hard water levels while only 4% (19 cities or 167 Zip codes) have Soft water.
Water Hardness FAQs
You can find out if your water is hard or soft by testing it, recognizing signs of hard water, or searching for water hardness data by city or zip code.
The water hardness data above will tell you your water hardness level, just select your state by clicking on the state code, and input your zip code or city name to short out your water hardness level.
The data is not fully collected, so if you cannot find the water hardness of your area please leave your comment, and we will check to update it. Thank you.