The Effects of Heavily Chlorinated Pool Water on Asphalt in an HOA Community

Case Study:

Background

A homeowners association (HOA) observed that asphalt pavement adjacent to its community recreation area exhibited persistent staining and signs of accelerated aging compared to other roadways throughout the neighborhood. Areas surrounding the swimming pool appeared to deteriorate more rapidly, raising concerns about long-term pavement performance and maintenance costs.

This case study examines how repeated exposure to chemically treated pool water, combined with Arizona’s intense UV exposure and extreme summer temperatures, contributed to premature pavement deterioration and increased maintenance requirements.

The Challenge

Community pools are valuable amenities, but water containing chlorine and other treatment chemicals is frequently tracked or discharged onto nearby pavement through splash-out, deck cleaning, and maintenance activities. Over time, these conditions can contribute to:

• Surface staining
• Accelerated asphalt oxidation
• Increased brittleness
• Premature cracking
• Reduced pavement life
• Higher maintenance costs

Arizona’s intense sunlight and prolonged high temperatures further accelerate the aging process.

Observations

During the site evaluation, several pavement conditions were documented:

• Persistent staining surrounding the recreation area.
• Asphalt adjacent to the pool complex faded significantly faster than pavement elsewhere within the community.
• The asphalt binder became increasingly dry and brittle due to accelerated oxidation.
• Surface cracking developed sooner than expected and progressed into early raveling in several locations.
• Maintenance records indicated these areas required crack sealing and patching years ahead of the HOA’s anticipated maintenance schedule.

Preventative Measures

To protect its pavement investment, the HOA implemented several preventative maintenance improvements:

• Redirected pool backwash and drainage away from asphalt pavement whenever possible.
• Increased street sweeping frequency around the recreation area to remove chemical residue, dirt, and mineral deposits.
• Scheduled routine pressure washing to remove accumulated staining and contaminants before they penetrated the pavement surface.
• Incorporated annual crack sealing and periodic sealcoating into its preventative maintenance program.
• Continued monitoring pavement conditions near the recreation facility to identify deterioration early.

Results

Within two years of implementing these maintenance practices, the HOA experienced measurable improvements, including:

• Reduced pavement staining around the recreation area.
• Slower pavement deterioration adjacent to the pool complex.
• Fewer new cracks requiring repair.
• Reduced annual asphalt maintenance costs.
• Improved appearance throughout the recreation area and surrounding streets.
• Extended pavement life, delaying the need for costly resurfacing or replacement.

Key Takeaway

For HOA communities with swimming pools and recreation facilities, preventative maintenance is essential to protecting asphalt infrastructure.

While chlorine alone is rarely the sole cause of pavement failure, repeated exposure to chemically treated pool water—particularly when combined with Arizona’s UV exposure, extreme heat, and everyday traffic—can significantly accelerate asphalt deterioration.

Implementing proactive maintenance practices such as routine sweeping, pressure washing, crack sealing, and proper water management helps preserve pavement appearance, extend service life, reduce long-term repair costs, and protect the community’s investment.

Learn more right here.

Sunstate Sweeping

For over 35 years, Sunstate Sweeping has partnered with HOA communities throughout Arizona to protect pavement investments through proactive exterior maintenance services, including:

• Residential Street Sweeping
• Pressure Washing
• Dumpster & Pad Cleaning
• Exterior Day Porter Services

The Gold Standard in Exterior Maintenance Since 1991

602.415.1506
www.sunstatesweeping.com