Water Hardness by ZIP Code in
North Carolina

Browse 2 local reports across North Carolina, compare average hardness levels, and spot the cities where hard water is most likely to be a real household problem.

State summary
North Carolina
Avg. Hardness
275 PPM
State Risk
Severe

Local reports by city and ZIP code

Open a local page to see the reading, compare nearby ZIP codes, and get a plain-English interpretation.

Charlotte
Zip Code: 28201
Raleigh
Zip Code: 27601

Regional Water Variations

Water hardness often changes from one municipal source to the next in North Carolina, so nearby ZIP codes can tell a very different story.

Why compare? A state average can hide local hotspots where scale risk is much higher.

Priority Zones To Audit First

These ZIP codes show the highest recorded hardness in North Carolina and are usually the best places to start if you are researching treatment urgency.

Raleigh
ZIP 27601
420 PPM
Charlotte
ZIP 28201
130 PPM