Water hardness in Wanluan
115 mg/L moderately hard
Tap water in Wanluan is moderately hard: 115 mg/L (6.7 gpg · 6.4 °dH · 11.5 °fH).
Source: Taiwan Water Corporation open data (2026) · data checked 2026-10-20
Taiwan Water Corporation reports 115 mg/L as CaCO3 for Wanluan in Pingtung County, which is moderate and close to the edge of the hard band. We have not verified the town's source water. Some limescale on taps and kettles is likely over time.
Taiwan Water Corporation reports total hardness in mg/L CaCO₃; the drinking-water standard is 300 mg/L.
Water data
| Total hardness | 115 mg/L |
|---|---|
| Utility | Taiwan Water Corporation |
How Wanluan compares
- Tap water in Wanluan is 9 % softer than the median of the 265 cities we track in Taiwan (126 mg/L).
- By hardness it ranks 167 of 265 in Taiwan (1 = hardest); 37 % of these cities have softer water.
- In Pingtung County it is number 18 of 27 cities; the regional median is 155 mg/L.
- Nearest city with clearly softer water: Donghe, 87 km away (77 mg/L).
- Nearest city with clearly harder water: Zhutian, 3 km away (221 mg/L).
Ranking of the hardest and softest water in Taiwan →
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 Wanluan
| 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 Wanluan water hard or soft?
It is moderately hard: 115 mg/L as CaCO₃ (6.7 gpg, 6.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Wanluan safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Taiwan Water Corporation reports total hardness in mg/L CaCO₃; the drinking-water standard is 300 mg/L.
How many grains per gallon is Wanluan water?
6.7 gpg, equal to 6.4 °dH, 11.5 °fH or 115 mg/L calcium carbonate.
What dishwasher salt setting should I use in Wanluan?
For 115 mg/L (6.4 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Wanluan?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Taiwan Water Corporation open data (2026). Method: figure published by the water supplier. Taiwan Water Corporation open data · Outdated figure? Tell us