Water hardness in Guntersville
4.6 gpg moderately hard
Tap water in Guntersville is moderately hard: 4.6 gpg (78 mg/L · 4.4 °dH · 7.8 °fH).
Source: Guntersville Water Board 2025 Annual Water Quality Report (CCR) (2025) · data checked 2026-11-12
The Guntersville Water Board's 2025 annual water quality report prints hardness of 78.1 ppm (4.6 gpg), from testing across January to December 2025. It is a single citywide figure with no range, and the report does not state the CaCO3 basis, so it is kept as printed. That puts it at the upper end of soft to moderately hard, and scale should be mild.
USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
Water data
| Total hardness | 4.6 gpg |
|---|---|
| Utility | Guntersville Water Board |
How Guntersville compares
- Tap water in Guntersville is 50 % softer than the median of the 1372 cities we track in the United States (9.1 gpg).
- By hardness it ranks 1115 of 1372 in the United States (1 = hardest); 19 % of these cities have softer water.
- In Alabama it is number 9 of 17 cities; the regional median is 4.6 gpg.
Ranking of the hardest and softest water in the United States →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Guntersville
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 4 °dH |
| AEG / Electrolux | 2 |
| Beko | 1st |
| Hoover | S1 |
| LG | H1 |
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 Guntersville water hard or soft?
It is moderately hard: 78 mg/L as CaCO₃ (4.6 gpg, 4.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Guntersville 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 Guntersville water?
4.6 gpg, equal to 4.4 °dH, 7.8 °fH or 78 mg/L calcium carbonate.
What dishwasher salt setting should I use in Guntersville?
For 78 mg/L (4.4 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Guntersville?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Guntersville Water Board 2025 Annual Water Quality Report (CCR) (2025). Method: figure published by the water supplier. Guntersville Water Board 2025 Annual Water Quality Report (CCR) · Outdated figure? Tell us