Water resistance ratings appear on everything from smartphones to smartwatches to headphones, but the alphanumeric codes can be confusing to interpret. Understanding what these ratings actually guarantee, and what they do not, can help you avoid accidentally damaging a device you believed was fully protected.
At a Glance
- IP ratings use a two-digit code indicating dust and water protection levels
- Water resistance is not the same as waterproof, and ratings can degrade over time
- Different ratings correspond to different real-world exposure scenarios
- Warranty coverage for water damage varies even with a water resistance rating
How IP Ratings Are Structured
Ingress Protection ratings consist of two digits, with the first indicating protection against solid particles like dust, and the second indicating protection against liquid intrusion. A rating like IP68 means a six for dust protection, the highest level, and an eight for water protection, indicating protection against continuous submersion beyond one meter under specific test conditions.
What the Water Protection Digit Actually Means
The second digit in an IP rating corresponds to specific test conditions, ranging from protection against dripping water at a low number to protection against continuous submersion at higher numbers like seven or eight. Each level is tested under controlled laboratory conditions that may not fully replicate real-world scenarios like exposure to soapy water, saltwater, or water under pressure.
Water Resistant vs Waterproof
No consumer electronic device is truly waterproof in the sense of being completely impervious to water damage under any condition, which is why manufacturers use the term water resistant rather than waterproof. Even devices with high IP ratings can be damaged by prolonged exposure, extreme pressure, or water at temperatures outside tested conditions.
Why Ratings Can Degrade Over Time
Water resistance relies on physical seals and gaskets that can wear down over time due to drops, temperature changes, and general aging, meaning a device’s actual water resistance may be lower than its original rating as it ages. This is particularly relevant for older devices that have been dropped or opened for repairs, which can compromise factory seals.
Common Real-World Scenarios and Their Risks
Accidental splashes or brief rain exposure are generally well handled by most modern water-resistant devices, while activities like swimming, showering, or exposure to pressurized water from activities like water sports carry higher risk even for well-rated devices. Saltwater and chlorinated pool water are particularly risky since they can corrode components more aggressively than fresh water.
Water Resistance in Different Device Categories
Smartphones, smartwatches, and headphones all have varying typical water resistance levels within their categories, with fitness-focused smartwatches often rated for swimming while some standard headphones are rated only for sweat and light rain resistance. Checking the specific rating for your device category and model, rather than assuming based on the general product type, avoids costly mistakes.
What Happens If Water Damage Occurs
Despite a water resistance rating, many manufacturer warranties explicitly exclude liquid damage from coverage, meaning repair costs for water-damaged devices often fall entirely on the owner. This is an important detail to understand, since a rated device is not necessarily covered financially if something does go wrong.
Steps to Take After Water Exposure
If a device is exposed to water beyond its rated tolerance, powering it off immediately, avoiding charging until fully dry, and allowing thorough air drying, sometimes with silica gel packets, can improve chances of survival. Rice is a commonly cited but less effective method compared to proper desiccants or professional drying services.
Maintaining Water Resistance Over the Device’s Life
Avoiding unnecessary drops, keeping ports clean of debris, and having any water resistance seals checked during professional repairs helps maintain a device’s rated protection over its useful lifespan. Devices that have undergone third-party repairs, particularly non-manufacturer authorized repairs, may have compromised water resistance even if seals appear intact.
FAQ
Can I shower with a water-resistant smartwatch? Many are rated for this, but checking the specific model’s rating first is important, since not all ratings cover soap exposure well.
Does water resistance decrease as a device gets older? Yes, physical seals can degrade over time, particularly after drops or repairs, reducing actual protection below the original rating.
Is IP68 the highest possible rating? It is among the highest common consumer ratings, though some specialized devices carry even higher submersion depth and duration certifications.
Will my warranty cover water damage if my phone is rated water resistant? Often not, since many manufacturers explicitly exclude liquid damage from standard warranty coverage regardless of rating.
Is saltwater more damaging than fresh water? Yes, saltwater is more corrosive and poses higher risk to internal components even for well-rated devices.
Should I dry a wet device with rice? Rice is a commonly used but not particularly effective method; silica gel packets or professional drying services tend to work better.
Conclusion
Water resistance ratings provide useful guidance on how much liquid exposure a device can realistically handle, but they are not a guarantee against all water damage scenarios. Understanding the specific rating for your device, and being mindful of higher-risk situations like swimming or saltwater exposure, helps you avoid costly and often uncovered repairs.
