# Castilla Springs, Utah

Castilla Springs in Utah. 104°F (40°C). Short Walk. Utah County.

- Page: https://www.soakingsprings.com/hot-springs/utah/castilla-springs
- Source: Soaking Springs, researched and maintained by Armen Suny
- Updated: 2026-09-14

## Can you soak at Castilla Springs?

The water leaves the ground at 104°F, a comfortable soaking temperature. It's a short walk from the road. We haven't confirmed whether it has a pool or charges a fee.

## Key facts

| Fact | Value |
|---|---|
| Source water temperature | 104°F (40°C) (USGS record; developed pools are often cooled) |
| pH | 7.9 (Slightly Alkaline) |
| Total dissolved solids | 6,610 mg/L |
| Elevation | 4,920 ft |
| Access | Short Walk, 505 ft from the nearest road |
| County | Utah County |
| Nearest town | Mapleton |
| Coordinates | 40.03800, -111.52900 |
| Best months to soak | January, December, February (largest gap between water and average air temperature) |
| Nearest campground | DIAMOND, 5.8 mi |

## About Castilla Springs

Castilla Springs comes out hot, comfortably above a bath, about six miles from Mapleton. A 1967 analysis shows the water loaded with dissolved minerals, salty, with sulfate and chloride high. No owner and no public access status appear in the record, so whoever manages it today is unknown here. Utah County is where it sits, with Diamond campground close by.

A short walk of five hundred feet or so separates the spring from the road, and that road carries no name on file. Winter is serious in this corner of Utah: six feet of snow most years and close to twenty inches of precipitation. Diamond campground is under six miles off.

December to February is the window the record gives, though with that much snow the short walk may be in drifts. The water is above 100 degrees, so lower yourself in gradually. Nothing on file confirms public access. The mineral reading is nearly sixty years old. No fee is mentioned.

## Water chemistry

Lab sample from 1967-10-20 (Water Quality Portal).

| Measure | Value |
|---|---|
| pH | 7.9 |
| Total dissolved solids | 6,610 mg/L |
| Calcium | 469 mg/L |
| Magnesium | 80 mg/L |
| Sodium | 1,680 mg/L |
| Sulfate | 1,400 mg/L |
| Chloride | 2,320 mg/L |

## Nearby

- Nearest city page: [Hot springs near Mapleton](https://www.soakingsprings.com/hot-springs/near/utah/mapleton), 0 mi away
- State page: [Hot springs in Utah](https://www.soakingsprings.com/hot-springs/utah)
- [Wood Springs, UT](https://www.soakingsprings.com/hot-springs/utah/wood-springs): 73°F source, Roadside, near Springville, Utah County
- [Diamond Fork Warm Springs, UT](https://www.soakingsprings.com/hot-springs/utah/diamond-fork-warm-springs): 68°F source, Roadside, near Mapleton, Utah County
- [Lincoln Point Warm Springs, UT](https://www.soakingsprings.com/hot-springs/utah/lincoln-point-warm-springs): 90°F source, pH 6.4, TDS 5,990 mg/L, Roadside, near West Mountain, Utah County
- [Bird Island, UT](https://www.soakingsprings.com/hot-springs/utah/bird-island): 86°F source, pH 6.4, TDS 6,240 mg/L, Hike, near Benjamin, Utah County
- [Goshen Warm Srings, UT](https://www.soakingsprings.com/hot-springs/utah/goshen-warm-srings): 73°F source, Short Walk, near Genola, Utah County
- [Warm Springs, UT](https://www.soakingsprings.com/hot-springs/utah/warm-springs-utah-county-2): 75°F source, pH 7.5, Short Walk, near Saratoga Springs, Utah County

## Questions

**What is the water temperature at Castilla Springs?**
Castilla Springs has a water temperature of 104°F (40°C). This is considered a hot spring, well above body temperature.

**Where is Castilla Springs located?**
Castilla Springs is located in Utah County, Utah at 4,920 feet elevation, near Mapleton. Coordinates: 40.0380°N, 111.5290°W.

**How do I get to Castilla Springs?**
Castilla Springs has Short Walk road access (505 ft from the road).

**Can I camp near Castilla Springs?**
Yes, Diamond is located nearby (5.8 miles away).

**What minerals are in the water at Castilla Springs?**
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 7.9 (slightly alkaline). Total dissolved solids measure 6,610 mg/L.

## Sources

- USGS thermal springs records, Water Quality Portal lab analyses, OpenStreetMap, Wikipedia/Wikidata, NOAA climate normals