Water hardness in Liberty Lake
6.1 gpg moderately hard
Tap water in Liberty Lake is moderately hard: 6.1 gpg (104 mg/L · 5.8 °dH · 10.4 °fH).
Source: Liberty Lake Sewer and Water District: Water Hardness (2017) · data checked 2026-10-29
This figure is over 3 years old; hardness may have changed.
Liberty Lake's water is supplied by the Liberty Lake Sewer and Water District. The district's hardness page reports 104 mg/L as CaCO₃, a moderately hard value. The figure is dated 2017, so it is worth checking against the district's latest report.
USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
Water data
| Total hardness | 6.1 gpg |
|---|---|
| calcium_mgl | 27 |
| magnesium_mgl | 8.97 |
| Utility | Liberty Lake Sewer and Water District |
How Liberty Lake compares
- Tap water in Liberty Lake is 33 % softer than the median of the 1372 cities we track in the United States (9.1 gpg).
- By hardness it ranks 996 of 1372 in the United States (1 = hardest); 27 % of these cities have softer water.
- In Washington it is number 6 of 27 cities; the regional median is 2.8 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 Liberty Lake
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 6 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| 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 Liberty Lake water hard or soft?
It is moderately hard: 104 mg/L as CaCO₃ (6.1 gpg, 5.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Liberty Lake 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 Liberty Lake water?
6.1 gpg, equal to 5.8 °dH, 10.4 °fH or 104 mg/L calcium carbonate.
What dishwasher salt setting should I use in Liberty Lake?
For 104 mg/L (5.8 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Liberty Lake?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Liberty Lake Sewer and Water District: Water Hardness (2017). Method: figure published by the water supplier. Liberty Lake Sewer and Water District: Water Hardness · Outdated figure? Tell us