Port Royal, SC water hardness

Tap water hardness
43mg/L
2.5gpg
Soft

Reported by Bjw&sa (0720003) · September 2025

SC typical
32 mg/L
EPA health violations since 2016
1
Data
Utility report

Tap water in Port Royal has about 43 mg/L of hardness, which is 2.5 grains per gallon. On the USGS scale that counts as soft. The number comes from Bjw&sa (0720003), dated September 2025.

Port Royal on the hardness scale, with nearby cities
060120180240300360+SC typical 32Summerville: 26 mg/LSummerville 26Beaufort: 41 mg/LBeaufort 41Hardeeville: 43 mg/LHardeeville 43Bluffton: 44 mg/LBluffton 44Hanahan: 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 59Hilton Head Island: 98 mg/LHilton Head Island 98Port Royal 43mg/L as calcium carbonate060120180240300360+SC 32Beaufort: 41 mg/LBeaufort 41Hardeeville: 43 mg/LHardeeville 43Bluffton: 44 mg/LBluffton 44Charleston: 57 mg/LCharleston 57James Island: 58 mg/LJames Isla. 58Hilton Head Island: 98 mg/LHilton Hea. 9843 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Port Royal sits 11 mg/L above the typical South Carolina figure of 32. Of the 10 nearest cities we track, 2 have softer water and 7 have harder. The range nearby runs from 26 mg/L in Summerville to 98 in Hilton Head Island.

What 43 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 43 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 Port Royal's water system

Bjw&sa (Sc0720003) · PWSID SC0720003

1 health-based violation since 2016

Serves about 164,829 people from surface water.

Health-based
1
Monitoring or reporting
0
Open now
0

TapWaterData ties Port Royal to this system. EPA's service-area records do not name Port Royal, so check the utility printed on your water bill.

20162017201820192020202120222023202420252026Haloacetic acids (HAA5)'16'18'20'22'24'26Haloacetic acids (HAA5)
Each dot is one health-based violation, placed at the start of its compliance period.
Contaminant or ruleViolationsPeriodStatus
Haloacetic acids (HAA5)a disinfection byproduct12023Resolved

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 Port Royal water hard?

No. It measures about 43 mg/L (2.5 grains per gallon), which the USGS classes as soft.

What is the water hardness in Port Royal in grains per gallon?

About 2.5 gpg. One grain per gallon equals 17.1 mg/L, so 43 mg/L divided by 17.1 gives 2.5.

Has the Port Royal water system had EPA violations?

EPA records show 1 health-based violation for Bjw&sa (Sc0720003) since 2016, involving Haloacetic acids (HAA5).

Nearby cities

All 58 cities in South Carolina

Hardness data: TapWaterData US Water Hardness (utility report, September 17, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.