Moncks Corner, SC water hardness

Tap water hardness
20mg/L
1.2gpg
SoftCounty estimate

County estimate from 1,854 water samples in Berkeley County · July 2026

SC typical
32 mg/L
EPA health violations since 2016
0
Data
County estimate

Water samples from around Moncks Corner put hardness at about 20 mg/L (1.2 gpg), which would be soft on the USGS scale. Treat this as a rough guide: it is the median of 1,854 samples taken across Berkeley County, mostly wells and streams, not a test of Moncks Corner's treated tap water. One more reason for caution: EPA lists Moncks Corner's water system as using surface water, which is often softer than the wells behind the county figure.

Moncks Corner on the hardness scale, with nearby cities
060120180240300360+SC typical 32Sumter: 23 mg/LSumter 23Summerville: 26 mg/LSummerville 26Murrells Inlet: 31 mg/LMurrells Inlet 31Socastee: 31 mg/LSocastee 31Goose Creek: 46 mg/LGoose Creek 46Hanahan: 51 mg/LHanahan 51North Charleston: 53 mg/LNorth Charleston 53Charleston: 57 mg/LCharleston 57James Island: 58 mg/LJames Island 58Mount Pleasant: 59 mg/LMount Pleasant 59Moncks Corner 20mg/L as calcium carbonate060120180240300360+SC 32Summerville: 26 mg/LSummerville 26Goose Creek: 46 mg/LGoose Creek 46Hanahan: 51 mg/LHanahan 51North Charleston: 53 mg/LNorth Char. 53Charleston: 57 mg/LCharleston 57Mount Pleasant: 59 mg/LMount Plea. 5920 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Moncks Corner sits 12 mg/L below the typical South Carolina figure of 32. None of the 10 nearest cities we track has softer water. The range nearby runs from 23 mg/L in Sumter to 59 in Mount Pleasant.

What 20 mg/L means at home

Soap and shampoo lather with very little product. Kettles and showerheads stay mostly free of white crust.

Some people notice that soap feels slow to rinse off in soft water. That slippery feel is normal and harmless.

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

Nothing, as far as hardness goes. At 20 mg/L a softener would have almost nothing to remove.

Carbon filter

If the water tastes of chlorine, a pitcher or faucet carbon filter takes care of that. It does not change hardness.

EPA record for Moncks Corner's water system

Bcwsa Sangaree W/D (0820002) · PWSID SC0820002

No health-based violations since 2016

Serves about 95,345 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

EPA lists this system as serving Moncks Corner.

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 Moncks Corner water hard?

No. It measures about 20 mg/L (1.2 grains per gallon), which the USGS classes as soft.

What is the water hardness in Moncks Corner in grains per gallon?

About 1.2 gpg. One grain per gallon equals 17.1 mg/L, so 20 mg/L divided by 17.1 gives 1.2.

Has the Moncks Corner water system had EPA violations?

EPA records show no health-based violations for Bcwsa Sangaree W/D (0820002) since 2016.

Nearby cities

All 58 cities in South Carolina

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.