Hilton Head Public Service District
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Water Hardness Levels
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Hardness is a measure of the amount of certain naturally occurring
minerals found in water, nam NOTE: The hardness values given in the table below are expressed in mg/l CaCO3 (milligrams per liter as calcium carbonate) - many water softeners use grains/gallons values for determining settings - please refer to your manual to see how settings are calculated - to convert mg/l CaCO3 to grains/gallons hardness, simply divide the values shown on the chart by 17.1 |
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Hilton Head PSD Water Hardness Guide
The following table provides a general guideline for determining the hardness of water. This table can be consulted when choosing your water softener settings. Always consult your water softener manufacturer’s recommended settings:
1 to 3.5 grains per gallon (gpg); or 17 to 60 parts per million (ppm) = Slightly Hard
3.5 to 7 gpg; or 60 to 120 ppm = Moderately Hard
7 to 10 gpg; or 120 to 180 ppm = Hard
More than 10.5 gpg or 180 ppm = Very Hard
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Location
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Average Hardness: Mg/L CaCO3 |
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Bayley Point Ln. at Ladson Ct. |
162 |
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Beach City Rd. (near Dillon / Fish Haul) |
228 |
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End of Brams Point Rd. |
169 |
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Cardinal Rd. at Hunter Rd. |
156 |
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Cherry Hill Ln. at Tucker Ridge Ct. |
232 |
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Coggins Point Rd. (Sherman / Doubloon) |
152 |
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Colonial Dr. |
151 |
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Crooked Pond Dr. at Anglers Pond Ln. |
149 |
| Dolphin Head Dr. at Dolphin Head Ln. | 130 |
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Dolphin Head Dr. at Whitetail Deer Ln. |
142 |
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End of Ft. Howell Dr. |
180 |
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Ft. Howell Dr. at Lennox Ave. |
178 |
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Ft. Walker Dr. at Oak Creek Dr. |
178 |
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Flying King Ct. at Seabrook Dr. |
152 |
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Ghost Crab Way at Folly Field Rd. |
59 |
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Harbour Passage at Millwright Dr. |
124 |
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Headlands Dr. at Misty Morning Dr. |
54 |
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Hickory Forest Dr. at Hickory Nut |
130 |
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High Bluff Rd. at Wing Shell Ln. |
78 |
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Hospital |
111 |
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Hwy 278 at Singleton Beach |
95 |
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Main Street at Main Street Bowling Lanes |
36 |
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Mariners Cove |
128 |
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Marshland Rd. at Leg-O-Mutton Rd. |
118 |
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Marshland Rd. at River Club Dr. |
149 |
| Old Fort Dr. at Old Fort Ln. | 162 |
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Oyster Reef Dr. at Whooping Crane Way |
72 |
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Spanish Wells Rd. at Owens Rd |
171 |
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Spanish Wells Rd. at Tansyleaf Dr. |
172 |
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Wedgefield Dr. at Sheldon Ln. |
180 |
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Widewater Rd. at McIntosh Rd. |
172 |
| Wildhorse Rd. at Gumtree Rd. | 99 |
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Beaufort-Jasper Supply Water |
36 |
| Contact Us | |
| Customer Service | (843) 681 5525 |
| Automated Information Line | (843) 681 0555 |
| Fax | (843) 681 5052 |
| info@hhpsd.com | |
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calcium and magnesium. While calcium and magnesium are essential minerals
for human health, hardness may cause spotting on dishes and shower walls,
affect the lathering of soap (more hardness = less lathering or suds =
more soap/detergent required to do the same job) or cause deposits on
water related fixtures. The following table shows the average hardness
levels for representative sites throughout the district. The District has
implemented measures to reduce hardness levels, which in the past have
been significantly higher than those shown below. Depending on the exact
blend of water coming from different sources at any given moment, your
water hardness levels may vary from those shown on the chart. These values
are for general reference only. If you are referencing these figures in
order to determine the optimum setting for your water softener, the
chemical dosage for your pool, or monitoring your calcium intake, it is
suggested that you use the average value from a site near your
residence for the calculations.