Water hardness in South Jordan
8.5 gpg hard
Tap water in South Jordan is hard: 8.5 gpg (146 mg/L · 8.2 °dH · 14.6 °fH).
Source: South Jordan City, Water page (hardness statement) (2025) · data checked 2026-10-23
Range across supply zones: 120–171 mg/L.
South Jordan buys treated water from Jordan Valley Water Conservancy District, which combines Provo River water stored in Jordanelle and Deer Creek reservoirs with valley groundwater. The computed figure is 145.5 mg/L CaCO₃ (119.8–171.2 mg/L). That is hard water, with scale on glass and heaters.
USGS classes: soft 0–60, moderately hard 61–120, hard 121–180, very hard >180 mg/L.
Water data
| Total hardness | 8.5 gpg |
|---|---|
| Utility | South Jordan City (water purchased from Jordan Valley Water Conservancy District) |
How South Jordan compares
- Tap water in South Jordan is 6 % softer than the median of the 1372 cities we track in the United States (9.1 gpg).
- By hardness it ranks 738 of 1372 in the United States (1 = hardest); 46 % of these cities have softer water.
- In Utah it is number 12 of 14 cities; the regional median is 10.9 gpg.
- Nearest city with clearly harder water: West Jordan, 5 km away (10.7 gpg).
Ranking of the hardest and softest water in the United States →
What it means at home
- Fast scale on taps, shower screens and kettle; white spots on glassware.
- Water heater: efficiency loss and element failures within years if unprotected.
- Dry skin and dull hair after showering are common.
- Softener recommended; jug or reverse osmosis for drinking.
How much salt will you use for softening?
Recommended, especially with a heater or boiler: scale cuts efficiency and shortens its life.
Descale a coffee machine or kettle about every 2 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in South Jordan
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 8 °dH |
| AEG / Electrolux | 2 |
| Beko | 3rd |
| Hoover | S1 |
| LG | H2 |
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 South Jordan water hard or soft?
It is hard: 146 mg/L as CaCO₃ (8.5 gpg, 8.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in South Jordan 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 South Jordan water?
8.5 gpg, equal to 8.2 °dH, 14.6 °fH or 146 mg/L calcium carbonate.
What dishwasher salt setting should I use in South Jordan?
For 146 mg/L (8.2 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in South Jordan?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
Source
Source: South Jordan City, Water page (hardness statement) (2025). Method: computed from supplier's calcium and magnesium. South Jordan City, Water page (hardness statement) · Outdated figure? Tell us