Trinity Hot Springs Mineral Pools & Soaking

Water emerges from a source located two miles underground at about 135°F (57°C) and flows into a large outdoor swimming pool. The pool temperature varies by season and weather conditions—typically 95 to 108°F (35-42°C) in the summer and 90 to 95°F (32-35°C) in the winter. The natural spring water contains a wide range of beneficial minerals, including high levels of silica and fluoride. It is pure, free of contaminants, and certified safe for drinking.

Trinity Hot Springs is the only location in North America to earn the Natural Health Water Certificate (Natürliches Heilwasser) from the Institute Fresenius in Germany. This certification confirms the exceptional purity of the geothermal mineral water. Trinity’s drinkable natural water, along with its infused-flavored varieties, is available at the resort or online.

The resort is open year-round. The club facility can be rented for family reunions, birthdays, and other events. The pool is open to both overnight guests and day visitors.

Trinity Hot Springs is family-friendly, pet-friendly, and handicap accessible.

Bathing suits are required. Glass containers are not allowed on the property.

Because this is a membership-based resort, at least one person in each group must have a membership for both overnight stays and day use.

In addition to relaxing soaks, guests can enjoy spa services, yoga sessions, and meditation classes.

The hot spring is also a convenient base for exploring Idaho's backcountry. After a soak, you can wander the short trails around the property, enjoy the quiet pine forest, or relax by the nearby creek. Wildlife is abundant—it's common to spot deer, birds, and occasionally a fox in the early morning or evening hours.

The South Fork Boise River is one of the area’s top outdoor attractions, especially for anglers.

The river has plenty of rainbow trout and bull trout, and the best fishing is from late spring to fall. The cool, clear water and steady current make it great for fly-fishing, and there are several easy pullouts along the forest road where you can reach the river.

Lodging options include six lodge rooms, two cabins, a separate house, and a campsite for both tents and RVs.