Water Hardness in Research Triangl, NC
North Carolina · 1 zip codes · 3 matched water systems
City avg (weighted): 35 PPM
Dataset updated March 9, 20263 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
Is Research Triangl, NC Water Hard or Soft?
The displayed hardness for Research Triangl, NC is 35 PPM (2 GPG) from Durham, City Of, classified as soft. The citywide weighted average is 35 PPM.
Water hardness is not a drinking-water safety score. It measures calcium and magnesium minerals, and address-level results can shift by pressure zone, supply blend, building plumbing, or private well.
How this city reading is built
This city reading is a weighted rollup across 3 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.
Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.
Water Systems in Research Triangl
These systems are matched to Research Triangl, NC. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
| Durham, City Of NC0332010 | surface water | 35 PPM SoftUSGS estimate: 39 PPM | |
| Southern Trace S/D NC4392141 | groundwater | 39 PPM Soft | |
| Durham County Rougemont Water System NC4032018 | groundwater | 39 PPM Soft |
Zip Codes in Research Triangl, NC
What This Means For You
Use this city reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing equipment.
Know your water hardness?
If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Research Triangl, NC.
Frequently Asked Questions
How hard is the water in Research Triangl, NC?
The citywide weighted average water hardness in Research Triangl, NC is 35 PPM (2 GPG), classified as soft. This is based on 3 matched water systems.
Do I need a water softener in Research Triangl, NC?
At 35 PPM, the citywide average is relatively soft. A water softener is generally not necessary.
Is hard water in Research Triangl, NC safe to drink?
Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.
How many water systems serve Research Triangl, NC?
Research Triangl, North Carolina is served by 3 matched water systems across 1 zip code.
Learn More About Your Water
Water Hardness Scale: PPM and GPG Chart
Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.
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Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.
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