| IP Rating | IP68 |
| Max Water Depth | 8 feet (2.4 m) |
| Max Immersion Duration | 24 hours |
| Receiver Waterproof | No |
| Sensor Wear Duration | 10 days + 12-hour grace period |
| Bluetooth Range | ~20 feet |
Key Takeaways
- Dexcom G7 is rated IP68 β waterproof to 8 feet (2.4m) for up to 24 hours
- Safe for swimming, showering, and most water sports
- The receiver is NOT waterproof β keep it poolside
- Adhesive can weaken in water; use overlays for extended swim sessions
- Rinse sensor with fresh water after chlorine or saltwater exposure
Dexcom G7 Water Resistance Specifications
The Dexcom G7 CGM sensor carries an IP68 waterproof rating, the highest standard for consumer wearables. This means the sensor pod can withstand immersion in up to 8 feet (2.4 meters) of water for a continuous period of 24 hours without damage to electronics or sensor accuracy.
| Spec | Dexcom G7 |
|---|---|
| IP Rating | IP68 |
| Max Depth | 8 ft / 2.4 m |
| Max Duration | 24 hours |
| Receiver Waterproof? | No |
| Safe for Showers? | Yes |
| Safe for Swimming? | Yes |
What IP68 Means for Swimmers
IP68 is a practical rating for recreational swimming. Standard lap swimming in a pool (typically 4β5 feet deep), open water swimming, snorkeling, and water aerobics all fall comfortably within the G7's rated limits. However, scuba diving, high-pressure water jets, and whitewater kayaking may exceed these limits and are not recommended.
Pool Swimming
Chlorinated pool water is generally safe for the G7 sensor electronics, but chlorine is harsh on medical-grade adhesive over time. For sessions longer than 30 minutes, consider applying a waterproof adhesive overlay patch over the sensor to secure the edges and prevent premature lift.
Open Water and Ocean Swimming
Saltwater presents similar adhesive challenges. After any ocean swim, rinse the sensor site with clean fresh water. This removes salt crystals that can weaken the adhesive bond and irritate surrounding skin.
Does Water Affect G7 Accuracy?
Dexcom has confirmed that water immersion within rated limits does not affect glucose reading accuracy. Pressure changes at recreational swim depths are not sufficient to impact the electrochemical sensor. If readings appear erratic immediately after swimming, wait 15β20 minutes β this is more likely related to temperature changes affecting blood flow at the sensor site than water damage.
Protecting Your G7 Adhesive During Swimming
The sensor's built-in adhesive is medical-grade but not immune to prolonged water exposure. Practical steps to extend wear life include:
- Apply a waterproof overlay patch before swimming (Skin Tac, Tegaderm, or sport patches)
- Dry the sensor area gently with a towel β do not rub aggressively
- Avoid applying sunscreen or lotions directly on or around the sensor
- Choose a placement site less exposed to friction (upper arm is standard)
G7 vs G6 Water Resistance Comparison
| Feature | G7 | G6 |
|---|---|---|
| IP Rating | IP68 | IP68 |
| Max Depth | 8 ft | 8 ft |
| Wear Duration | 10 days + 12hr grace | 10 days |
| Sensor Size | Smaller/lighter | Larger |
Both generations share identical water resistance ratings, but the G7's smaller, lighter profile tends to stay adhered more reliably during physical activity including swimming.
Receiver and Phone Considerations
The Dexcom G7 receiver is not water-resistant and must be kept away from water. Your smartphone running the Dexcom G7 app does not need to be in the water β Bluetooth range is approximately 20 feet, so leave your phone or receiver poolside while you swim. Data will sync automatically when back in range.
Recommended Products
For swimmers and active users, pairing your G7 with reliable adhesive overlays and skin prep wipes is essential. Browse MDS Diabetes's range of CGM accessories at mdsdiabetes.com, including sport-grade overlay patches and skin barrier wipes designed specifically to extend sensor wear during water activities.