Hard water in Christiansburg, VA
County estimate from 405 water samples in Montgomery County · July 2026
- VA typical
- 65 mg/L
- EPA health violations since 2016
- 0
- Softener for 3 people
- 24k grain
- Data
- County estimate
Water samples from around Christiansburg put hardness at about 213 mg/L (12.5 gpg), which would be very hard on the USGS scale. Treat this as a rough guide: it is the median of 405 samples taken across Montgomery County, mostly wells and streams, not a test of Christiansburg's treated tap water. One more reason for caution: EPA lists Christiansburg's water system as using surface water, which is often softer than the wells behind the county figure.
At 213 mg/L, Christiansburg is 148 mg/L above the typical Virginia figure of 65. None of the 10 nearest cities we track has harder water. The range nearby runs from 20 mg/L in Pulaski to 166 in Salem.
What 213 mg/L means at home
Scale forms fast here. Kettles and coffee makers need regular descaling, and showerheads clog unless you clean them.
Tank water heaters collect mineral sediment that insulates the water from the burner, so flushing the tank matters more than usual.
Dishes and glass shower doors spot easily. Soap scum and a dull film on hair or laundry are common complaints.
Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.
What to do about it
At 213 mg/L most of the trouble is scale, and only a few things deal with it.
Ion-exchange water softener
The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.
Salt-free conditioner
No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.
Reverse osmosis or carbon filter
Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.
3 people × 75 gallons a day × 12.5 gpg = 2,804 grains a day. A 24,000-grain unit regenerates about every 8 days.
EPA record for Christiansburg's water system
No health-based violations since 2016
Serves about 22,000 people from surface water.
- Health-based
- 0
- Monitoring or reporting
- 2
- Open now
- 0
EPA lists this system as serving Christiansburg.
Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.
Questions
Is Christiansburg water hard?
Yes. It measures about 213 mg/L (12.5 grains per gallon), which the USGS classes as very hard.
What is the water hardness in Christiansburg in grains per gallon?
About 12.5 gpg. One grain per gallon equals 17.1 mg/L, so 213 mg/L divided by 17.1 gives 12.5.
What size water softener do I need in Christiansburg?
For 3 people using 75 gallons each per day, 12.5 gpg works out to about 2,804 grains a day. A 24,000-grain softener covers that with a regeneration about every 8 days.
Has the Christiansburg water system had EPA violations?
EPA records show no health-based violations for Christiansburg Town of since 2016. There were also 2 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Blacksburg41 mg/LSoft
- Radford55 mg/LSoft
- Pulaski20 mg/LSoft
- Salem166 mg/LHard
- Cave Spring145 mg/LHard
- Roanoke145 mg/LHard
- Vinton145 mg/LHard
- Collinsville26 mg/LSoft
- Martinsville20 mg/LSoft
- Bedford65 mg/LModerately hard
Hardness data: TapWaterData US Water Hardness (county estimate, July 4, 2026), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.