# St Helena White Sulphur Spring, California

St Helena White Sulphur Spring in California. 97°F (36°C). Roadside. Napa County.

- Page: https://www.soakingsprings.com/hot-springs/california/st-helena-white-sulphur-spring
- Source: Soaking Springs, researched and maintained by Armen Suny
- Updated: 2026-09-14

## Can you soak at St Helena White Sulphur Spring?

The water leaves the ground at 97°F, a comfortable soaking temperature. You can drive right up to it. We haven't confirmed whether it has a pool or charges a fee.

## Key facts

| Fact | Value |
|---|---|
| Source water temperature | 97°F (36°C) (USGS record; developed pools are often cooled) |
| pH | 8.7 (Alkaline) |
| Total dissolved solids | 750 mg/L |
| Elevation | 300 ft |
| Access | Roadside, 1 ft from the nearest road (White Sulphur Spring Road) |
| County | Napa County |
| Nearest town | Saint Helena |
| Coordinates | 38.49000, -122.49800 |
| Best months to soak | January, December, February (largest gap between water and average air temperature) |
| Nearest campground | OAK SHORES DAY USE AREA (CA), 15.0 mi |

## About St Helena White Sulphur Spring

A warm sulphur spring at the edge of Saint Helena in the Napa Valley, and a USGS monitoring point with water chemistry on file. The water is about body temperature, pleasant, mild. White Sulphur Spring Road runs past it within arm's reach. Public access and ownership are blank in the record, and in a town like this that is worth settling before you show up.

Low elevation, a few hundred feet up, in a valley that sees no snow and a wet winter. The spring is at the very lip of White Sulphur Spring Road, one foot from it according to the mapping. Nobody is listed as land manager, and No unit and designation is on record too. A 2004 sample found a noticeably alkaline water carrying sodium, sulfate, chloride and iron, with dissolved solids in the moderate range.

The USGS keeps this spring on its books as a thermal monitoring site, with a chemistry sample from October 2004 on file.

Winter months are the listed window, and with no snow to speak of the road stays open all year. Roadside access. The nearest camping in our data is the Oak Shores day use area, fifteen miles away, and a day use area will not let you stay the night. The chemistry figures date to a 2004 sample. Access is not on record.

## Water chemistry

Lab sample from 2004-10-20 (Water Quality Portal).

| Measure | Value |
|---|---|
| pH | 8.7 |
| Total dissolved solids | 750 mg/L |
| Calcium | 5.5 mg/L |
| Magnesium | 0.9 mg/L |
| Sodium | 224 mg/L |
| Sulfate | 114 mg/L |
| Chloride | 207 mg/L |
| Iron | 9.9 µg/L |

## Nearby

- Nearest city page: [Hot springs near Kenwood](https://www.soakingsprings.com/hot-springs/near/california/kenwood), 7 mi away
- State page: [Hot springs in California](https://www.soakingsprings.com/hot-springs/california)
- [White Sulphur Springs (California), CA](https://www.soakingsprings.com/hot-springs/california/white-sulphur-springs-california): pH 8.7, TDS 750 mg/L, Roadside, near Saint Helena, Napa County
- [Los Guilicos Warm Springs, CA](https://www.soakingsprings.com/hot-springs/california/los-guilicos-warm-springs): 88°F source, TDS 640 mg/L, Short Walk, near Kenwood, Sonoma County
- [Calistoga Hot Springs, CA](https://www.soakingsprings.com/hot-springs/california/calistoga-hot-springs): 172°F source, Roadside, near Calistoga, Napa County
- [Unnamed thermal spring, CA](https://www.soakingsprings.com/hot-springs/california/unnamed-spring-sonoma-county-1): 73°F source, TDS 640 mg/L, Short Walk, near Kenwood, Sonoma County
- [Unnamed thermal spring, CA](https://www.soakingsprings.com/hot-springs/california/unnamed-spring-sonoma-county-2): 70°F source, Roadside, near Eldridge, Sonoma County
- [Aetna Springs, CA](https://www.soakingsprings.com/hot-springs/california/aetna-springs): 91°F source, Roadside, near Angwin, Napa County

## Questions

**What is the water temperature at St Helena White Sulphur Spring?**
St Helena White Sulphur Spring has a water temperature of 97°F (36°C). This is a warm thermal spring.

**Where is St Helena White Sulphur Spring located?**
St Helena White Sulphur Spring is located in Napa County, California at 300 feet elevation, near Saint Helena. Coordinates: 38.4900°N, 122.4980°W.

**How do I get to St Helena White Sulphur Spring?**
St Helena White Sulphur Spring has Roadside road access, with the nearest road being White Sulphur Spring Road (1 ft from the road).

**Can I camp near St Helena White Sulphur Spring?**
Yes, Oak Shores Day Use Area (Ca) is located nearby (15.0 miles away).

**What minerals are in the water at St Helena White Sulphur Spring?**
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 8.7 (alkaline). Total dissolved solids measure 750 mg/L.

## Sources

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