Water hardness in Mauldin
0.3 gpg soft
Tap water in Mauldin is soft: 0.3 gpg (6 mg/L · 0.3 °dH · 0.6 °fH).
Source: Greenville Water Finished Water Quality Report (May 2026, YTD) (2026) · data checked 2026-11-02
Range across supply zones: 5–7 mg/L.
Mauldin is supplied by Greenville Water. Its May 2026 year-to-date finished water report shows an average of 5.7 mg/L as CaCO₃, ranging from 4.9 to 6.7 mg/L. That is very soft water, and it is a year-to-date figure, not a full-year average. Scale is not an issue, and detergent dosing can be reduced.
USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
Water data
| Total hardness | 0.3 gpg |
|---|---|
| Calcium (mg/L) | 1.3 |
| Magnesium (mg/L) | 0.52 |
| Utility | Greenville Water |
How Mauldin compares
- Tap water in Mauldin is 96 % softer than the median of the 1372 cities we track in the United States (9.1 gpg).
- By hardness it ranks 1371 of 1372 in the United States (1 = hardest); 0 % of these cities have softer water.
- In South Carolina it is number 8 of 8 cities; the regional median is 2.6 gpg.
Ranking of the hardest and softest water in the United States →
What it means at home
- Little or no limescale in kettles, water heaters or washing machines.
- Soap lathers easily; water does not dry skin or hair.
- Dishwasher: salt setting at minimum or off.
- No softener needed; a jug filter only changes taste.
How much salt will you use for softening?
No. Water this soft does not need softening.
Descale a coffee machine or kettle about every 6 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Mauldin
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 1 °dH |
| AEG / Electrolux | 1 |
| Beko | 1st |
| Hoover | S0 |
| LG | H0 |
From each brand's manual for the model family named in the source; your model may differ, so check its manual. All brands and how to change the setting →
FAQ
Is Mauldin water hard or soft?
It is soft: 6 mg/L as CaCO₃ (0.3 gpg, 0.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Mauldin safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
How many grains per gallon is Mauldin water?
0.3 gpg, equal to 0.3 °dH, 0.6 °fH or 6 mg/L calcium carbonate.
What dishwasher salt setting should I use in Mauldin?
For 6 mg/L (0.3 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Mauldin?
No. With soft water a softener adds nothing.
Source
Source: Greenville Water Finished Water Quality Report (May 2026, YTD) (2026). Method: figure published by the water supplier. Greenville Water Finished Water Quality Report (May 2026, YTD) · Outdated figure? Tell us