Water hardness in Yuanlin
109 mg/L moderately hard
Tap water in Yuanlin is moderately hard: 109 mg/L (6.4 gpg · 6.1 °dH · 10.9 °fH).
Source: Taiwan Water Corporation open data (2026) · data checked 2026-10-20
Tap water in Yuanlin measures 109.0 mg/L CaCO₃ in Taiwan Water Corporation's 2026 publication. Surface water cannot meet demand on the Choshui alluvial fan, so groundwater is an important source here, which tends to carry more dissolved minerals. Expect visible scale on kettles and glass; descaling every month or two keeps appliances in order.
Taiwan Water Corporation reports total hardness in mg/L CaCO₃; the drinking-water standard is 300 mg/L.
Water data
| Total hardness | 109 mg/L |
|---|---|
| Utility | Taiwan Water Corporation |
How Yuanlin compares
- Tap water in Yuanlin is 13 % softer than the median of the 265 cities we track in Taiwan (126 mg/L).
- By hardness it ranks 170 of 265 in Taiwan (1 = hardest); 34 % of these cities have softer water.
- In Changhua County it is number 21 of 23 cities; the regional median is 184 mg/L.
- Nearest city with clearly softer water: Ershui, 17 km away (75 mg/L).
- Nearest city with clearly harder water: Buxin, 3 km away (201 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 Yuanlin
| 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 Yuanlin water hard or soft?
It is moderately hard: 109 mg/L as CaCO₃ (6.4 gpg, 6.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Yuanlin 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 Yuanlin water?
6.4 gpg, equal to 6.1 °dH, 10.9 °fH or 109 mg/L calcium carbonate.
What dishwasher salt setting should I use in Yuanlin?
For 109 mg/L (6.1 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Yuanlin?
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