**Palm Springs Pools: Is Sunscreen Feeding Algae?**

By Franklin Everett Shaw

January 2, 2026

The shimmering heat of a Palm Springs afternoon is best enjoyed poolside, slathered in sunscreen. But what if that very sunscreen, meant to protect you, is subtly sabotaging your pool and contributing to the dreaded algae bloom? It’s a question worth asking, especially if you’re tired of battling the green monster.

Let’s dive into the murky depths of sunscreen ingredients and their potential impact on your Palm Springs pool.

The Culprits: Oxybenzone and Octinoxate

Oxybenzone and octinoxate are common UV filters found in many popular sunscreens, including brands readily available at Palm Springs Target and Walmart locations. These chemicals, while effective at blocking harmful rays, have been identified as harmful to coral reefs. But their impact doesn’t stop there.

When you swim, these chemicals leach off your skin and into the pool water. Over time, they break down. This breakdown process can release nitrogen and phosphorus compounds. These compounds are essential nutrients for algae growth. Think of it as inadvertently fertilizing your pool.

The Palm Springs Problem: Heat and Hard Water

Palm Springs presents a unique challenge. The intense heat accelerates the breakdown of sunscreen chemicals in the water. The area’s notoriously hard water, rich in minerals, can also exacerbate algae growth. These minerals provide additional nutrients and create an environment where algae thrive.

A Case Study: The Green Pool on Avenida Caballeros

Consider a hypothetical case: A homeowner on Avenida Caballeros diligently applies sunscreen before enjoying their pool. They use a popular brand containing oxybenzone. Over several weeks, despite regular chlorination, the pool develops a persistent algae bloom. Traditional algaecides offer only temporary relief. The problem? The constant influx of sunscreen chemicals is continuously feeding the algae.

The Solution: Reef-Safe Sunscreen and Proactive Pool Care

The good news is that you can enjoy the Palm Springs sun without turning your pool into a swamp. The key is a two-pronged approach: switching to reef-safe sunscreen and implementing a robust pool maintenance strategy.

Step 1: Choose Reef-Safe Sunscreen

Reef-safe sunscreens typically use mineral-based UV filters like zinc oxide and titanium dioxide. These minerals are considered less harmful to aquatic ecosystems. Look for sunscreens labeled “reef-friendly” or “reef-safe.” Check the ingredient list for oxybenzone and octinoxate and avoid products containing them.

• Product Recommendations (Available at Palm Springs Target/Walmart):
  • Thinksport Sunscreen: A popular mineral-based option known for its effectiveness and water resistance.
  • Badger Balm Sunscreen: Another reliable choice with a simple, natural formula.
  • Neutrogena Sheer Zinc Dry-Touch Sunscreen: A widely available and affordable mineral sunscreen.

Step 2: Enhance Your Pool Maintenance Routine

Switching to reef-safe sunscreen is only half the battle. You also need to proactively manage your pool chemistry to prevent algae blooms.

• Regular Water Testing: Test your pool water at least twice a week. Pay close attention to pH, alkalinity, calcium hardness, and chlorine levels. Maintaining proper water balance is crucial for preventing algae growth.
• Phosphate Removal: Use a phosphate remover to eliminate excess phosphates from the water. Phosphates are a primary food source for algae. Regular phosphate removal can significantly reduce the risk of blooms. Look for phosphate removers at Leslie’s Pool Supplies or online retailers.
• Enzyme Treatment: Consider using an enzyme treatment to break down organic contaminants in the water. Enzymes can help to degrade sunscreen chemicals and other organic matter that contribute to algae growth.
• Shock Treatment: Shock your pool regularly, especially after heavy use or rainfall. Shocking helps to kill algae spores and other microorganisms.
• Filter Cleaning: Clean your pool filter regularly to remove debris and contaminants. A clean filter is essential for maintaining water clarity and preventing algae growth.
• Algaecide (Use Sparingly): While not a primary solution, algaecides can be used as a preventative measure. Choose an algaecide that is compatible with your pool type and follow the manufacturer’s instructions carefully. Copper-based algaecides can stain pool surfaces, so consider a polyquat algaecide instead.

Common Pitfalls and How to Avoid Them

• Neglecting Water Balance: Many pool owners focus solely on chlorine levels and neglect other important parameters like pH and alkalinity. Imbalanced water can create an environment where algae thrive, even with adequate chlorine.
• Insufficient Filtration: A poorly maintained or undersized filter can contribute to algae blooms. Ensure your filter is properly sized for your pool and clean it regularly. Consider upgrading to a more efficient filter if necessary.
• Over-Reliance on Algaecides: Algaecides should be used as a preventative measure, not a cure. Overuse of algaecides can lead to chemical imbalances and resistance in algae.
• Ignoring Phosphate Levels: Many pool owners are unaware of the importance of phosphate removal. Regularly testing and treating for phosphates can significantly reduce the risk of algae blooms.

Real-World Application: A Palm Springs HOA

Imagine a homeowner’s association (HOA) in a Palm Springs community with a shared pool. The HOA could implement a policy requiring residents to use reef-safe sunscreen while using the pool. They could also invest in a high-quality phosphate removal system and implement a more rigorous pool maintenance schedule. This proactive approach would benefit all residents by reducing the risk of algae blooms and maintaining a clean, healthy pool environment.

Beyond the Pool: Protecting the Environment

Choosing reef-safe sunscreen isn’t just about keeping your pool clean. It’s also about protecting the environment. Oxybenzone and octinoxate have been shown to harm coral reefs and other aquatic ecosystems. By switching to mineral-based sunscreens, you can help to reduce the impact of these chemicals on the environment.

The Takeaway

Living in Palm Springs means embracing the sun, but it doesn’t mean sacrificing your pool to algae. By understanding the potential impact of sunscreen ingredients and implementing a proactive pool maintenance strategy, you can enjoy a clean, healthy pool all season long. Choose reef-safe sunscreen, test your water regularly, remove phosphates, and maintain proper water balance. Your pool (and the environment) will thank you.