# Sulphur Spring, California

Sulphur Spring in California. 75°F (24°C). Roadside. Contra Costa County.

- Page: https://www.soakingsprings.com/hot-springs/california/sulphur-spring-2
- Source: Soaking Springs, researched and maintained by Armen Suny
- Updated: 2026-09-14

## Can you soak at Sulphur Spring?

The water leaves the ground at 75°F, about as warm as a heated pool. 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 | 75°F (24°C) (USGS record; developed pools are often cooled) |
| Elevation | 101 ft |
| Access | Roadside, 110 ft from the nearest road |
| County | Contra Costa County |
| Nearest town | Waldon |
| Coordinates | 37.92400, -122.04600 |
| Best months to soak | January, December, February (largest gap between water and average air temperature) |
| Nearest campground | Aquatic Park Cove, Black Point Overnight Anchoring, Sailing Vessels only (auxiliary engine OK), 22.1 mi |

## About Sulphur Spring

A second Sulphur Spring, this one in Contra Costa County at Waldon, barely above sea level. The water came out tepid, mid seventies. It sits about a hundred feet from a road. On file, the owner line is empty and access is unconfirmed. Resolve that first.

The road is unnamed on file and the spring sits beside it. Waldon is listed at zero miles, so the spring is in town or on its fringe. Snow-free, seventeen inches of rain, an annual average around sixty.

January, December and February are the months on record. The nearest camping on file is an overnight anchorage for sailing vessels twenty-two miles away, which tells you there is no real campground nearby. No fee is listed. Tepid water, no heat risk.

## Nearby

- Nearest city page: [Hot springs near Benicia](https://www.soakingsprings.com/hot-springs/near/california/benicia-solano), 12 mi away
- State page: [Hot springs in California](https://www.soakingsprings.com/hot-springs/california)
- [Springs, CA](https://www.soakingsprings.com/hot-springs/california/springs-contra-costa-county): Warm, Roadside, near Clayton, Contra Costa County
- [Unnamed thermal spring, CA](https://www.soakingsprings.com/hot-springs/california/unnamed-spring-contra-costa-county): 70°F source, Roadside, near Clayton, Contra Costa County
- [Unnamed thermal spring, CA](https://www.soakingsprings.com/hot-springs/california/unnamed-spring-solano-county): 73°F source, Roadside, near Benicia, Solano County
- [Vallejo White Sulphur Springs, CA](https://www.soakingsprings.com/hot-springs/california/vallejo-white-sulphur-springs): 68°F source, Roadside, near Vallejo, Solano County
- [Byron Hot Springs, CA](https://www.soakingsprings.com/hot-springs/california/byron-hot-springs): 96°F source, Short Walk, near Byron, Contra Costa County
- [Crohare Spring, CA](https://www.soakingsprings.com/hot-springs/california/crohare-spring): 70°F source, Short Walk, near Livermore, Alameda County

## Questions

**What is the water temperature at Sulphur Spring?**
Sulphur Spring has a water temperature of 75°F (24°C). This is a warm thermal spring.

**Where is Sulphur Spring located?**
Sulphur Spring is located in Contra Costa County, California at 101 feet elevation, near Waldon. Coordinates: 37.9240°N, 122.0460°W.

**How do I get to Sulphur Spring?**
Sulphur Spring has Roadside road access (110 ft from the road).

**Can I camp near Sulphur Spring?**
Yes, Aquatic Park Cove, Black Point Overnight Anchoring, Sailing Vessels Only (Auxiliary Engine Ok) is located nearby (22.1 miles away).

## Sources

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