San Diego Pool Experts Reveal: When and Why You Should Drain Your Pool

By Ses Salazar | Published: April 14, 2025

san diego pool drain and restart maintenance
Overview

Do you want to keep your San Diego pool in top shape and avoid costly damage? Learn when and why draining your pool is essential for maintenance, repairs, and water quality! Draining your pool in San Diego helps prevent chemical buildup and keeps treatment effective. Over time, excess calcium, phosphates, and algae make maintenance harder. Experts suggest draining and refilling your pool every 3-5 years to keep the water fresh, clean, and balanced.

Refreshing your pool water also helps protect equipment from scaling and damage caused by high chemical concentrations. It improves water clarity, making swimming safer and more enjoyable. Regular maintenance can extend the life of your pool and help you avoid costly repairs.

Are you looking for the best pool drain and restart service provider in San Diego that follows San Diego’s regulations before draining, including proper dechlorination and safe water disposal? Always check with local authorities or ask a professional to ensure compliance and protect the environment.

Look no further! If you’re looking for pool drain and restart services near me, PoolLogic San Diego has you covered!


When to Consider Draining Your Pool

Draining your pool at the right time helps keep the water fresh and your pool in great shape. Things like the season, chemical build up, and how often you swim all factor into the best time to do it.

1. Seasonal Timing Considerations

  • Choose the best time: To ensure a safe and efficient drain, you have to consider the weather, temperature, and local regulations to ensure a safe and efficient drain.
  • Plan ahead: Proper scheduling helps prevent damage, conserve water, and comply with local regulations.

Recommendation: Check local water restrictions before draining

2. Spring Cleaning

  • Perfect time for a fresh start!
    Draining and refilling your pool in Spring gets it ready for Summer fun with clean, clear water.
  • Say goodbye to built-up gunk! Over time, pools collect extra chemicals, and debris. A fresh refill every few years helps your water balance and sparkling.

Recommendation: Always perform a full water test before refilling to balance chemicals properly.

3. Avoiding Summer (Why Summer isn’t the best time)

  • Too hot to handle
    Draining your pool in the summer isn’t a great idea because extreme heat can cause major issues.
  • Protect your pool!
    An empty pool sitting in the sun can crack and warp, and lead to expensive repairs. Keeping some water in helps protect the surface.

Recommendation: If necessary, drain only partially or work during cooler mornings.

4. Fall Reset (The perfect refresh)

  • Prepare for cooler months!
    Fall is the perfect time to drain and rebalance the water before winter sets in.
  • Out with the old, in with the new!
    Removing built-up contaminants now makes it easier to maintain your pool during the off-season, so it is fresh and ready when warmer days return.

Recommendation: Use this time to clean and inspect pool equipment thoroughly.

5. Winter Work (A smart time for repairs)

  • Less busy, more Savings!
    Winter is a great time for pool maintenance and repairs since service demand is lower, you might get quicker appointments and better deals.
  • Watch out for the cold!
    Draining in freezing temperature can cause cracks and other damage, it’s important to plan carefully and avoid draining if a deep freeze is on the way!

Recommendation: Avoid draining if you are expecting freezing temperatures are expected to prevent damage.


Water Chemistry Gone Wrong – When Draining Your Pool Becomes a Must

Let’s be honest! Keeping your pool water balanced in San Diego’s warm climate isn’t always easy. Over time, chemicals build up, making treatment less effective and even causing damage. If your pool looks cloudy, or turns green, it might be time for a drain and refill. Here’s why!

1. Total Dissolved Solids (TDS) Overload

Total Dissolved Solids (TDS) refers to everything that dissolves in your pool water, such as minerals, chemicals, dirt, and organic matter.

  • As water evaporates, the dissolved solids are left behind and concentrated over time.
  • High TDS levels can cause cloudy water, scaling and make chlorine less effective.
  • Water can start to feel “thick” or “salty”, making swimming less enjoyable.

How Draining helps:
The only way to lower TDS is replacing old water with fresh water. Experts recommend draining and refilling your pool every 3-5 years in San Diego to keep TDS levels in check.

2. Cyanuric Acid (CYA) Buildup

Cyanuric acid is a stabilizer that helps protect chlorine from breaking down in the sun. In sunny San Diego, this is essential, but adding too much can cause a problem.

  • CYA doesn’t evaporate, so it keeps building up over time.
  • High levels can make chlorine less effective, leading to cloudy water and algae outbreaks.
  • When chlorine levels seem normal, excessive CYA can prevent proper sanitation.

How Draining helps:
Since CYA doesn’t break easily or naturally, the only way to lower it is by partially or fully draining the pool and refilling it with fresh water.

3. Calcium Hardness Extremes

Calcium is normally present in San Diego’s hard water. Pools need calcium to help prevent corrosion from happening, but too much leads to problems.

  • High calcium levels cause scaling on pool tiles, equipment, and even plumbing.
  • It can also turn your water cloudy and create irritating, scratchy deposits that aren’t fun to swim in.
  • On the flip side, too little calcium can wear down your pool’s plaster and even cause damage to your equipment over time.

How Draining helps:
Draining and refilling with fresh water helps balance calcium levels, preventing buildup and protecting your pool’s surfaces. Reverse osmosis treatments can also remove excess calcium without draining completely.

4. Persistent Algae Problems

Algae blooms are common in warm weather.

  • Algae love to take over when chlorine isn’t doing its job due to unbalanced chemicals
  • Black algae root into pool surfaces, making them nearly impossible to scrub away.
  • Even if you kill the algae, spores can linger in the water and return.

How Draining helps:
Draining your pool and doing an acid wash can completely get rid of stubborn algae, leaving you with a fresh start to treat the pool water and keep algae from coming back.

5. Chemical Accidents

Adding too much of the wrong chemical, accidental spills, or even mixing incompatible products can throw your water balance off.

  • Too much chlorine can cause skin irritation and bleach pool surfaces.
  • Imbalanced pH levels can make water unsafe and damage pool equipment.
  • Certain chemical reactions (like adding too much shock) can lead to dangerous fumes or cloudy water that won’t clear up.

How Draining helps:
If your water balance is beyond fixing with normal adjustments, draining and refilling can safely reset your pool chemistry, making it safe and comfortable again.

To sum it up:
San Diego’s climate can make pool care really tricky, but staying on top of things such as TDS, CYA, and algae keeps your pool clear. If regular maintenance isn’t enough to handle these, draining your pool might be the best way to restore balance and make swimming enjoyable again.


Major Repairs and Renovations – When Draining Your Pool is Necessary

Sometimes a simple patch up won’t cut it. If you’re dealing with cracks, worn-out surfaces, or aging equipment, draining your pool can make major repairs easier and more effective. Here’s when a drain is the best way to get the job done!

1. Surface Resurfacing

Maintaining your pool’s surface is crucial for both its appearance and functionality. Over time, materials like plaster, pebble, fiberglass, or tile can deteriorate due to exposure to chemicals, weather and regular use.

  • Rough, stained, or chipped plaster surfaces can make swimming uncomfortable.
  • Cracks and etching can lead to leaks or further damage.
  • Aesthetic updates can give your pool a fresh new look.

How Draining helps:
Resurfacing requires a completely dry surface for proper adhesion. Draining allows professionals to apply new plaster, smooth out rough areas, and fix underlying issues before refilling.

2. Major Structural Repairs

Structural damage means your pool might have cracks, leaks, or might be shifting because of changes in the ground around it.

  • Small cracks can lead to major water loss if left unchecked.
  • Soil movement can cause structural instability, making repairs essential.
  • Reinforcing the pool shell can extend its lifespan.

How Draining helps:
Fixing cracks and leaks often requires draining the pool to access the damaged areas. Specialized repairs like epoxy injections, resurfacing, or rebar reinforcement can only be done when the pool is empty.

3. Tile Replacement or Repair

Pool tiles add both beauty and function, but they can become loose, cracked, or discolored over time.

  • Broken or missing tiles can cause leaks or rough edges that may cut swimmers.
  • Mineral buildup can make tiles look dingy and hard to clean.
  • Upgrading tiles can refresh the pool’s appearance.

How Draining helps:
For full tile replacement or deep cleaning, draining is often required to access the entire tile line and ensure proper installation.

4. Equipment Pad Overhaul

Your pool equipment pad houses the pump, filter, heater, and other essential components that keep the water clean and circulating.

  • A failing pump or filter can make water maintenance impossible.
  • Old pumps and leaks can waste water and energy.
  • Upgrading to energy efficient equipment can save money in the long run.

How Draining helps:
While some equipment repairs can be done without draining, major upgrades or plumbing replacements often require lowering the water level or completely emptying the pool.

5. Deck Replacements

The pool deck is just as important as the pool itself, providing a safe and comfortable space for lounging and walking.

  • Cracked, sinking, or uneven decking can be a safety hazard.
  • Outdated or damaged materials can make your pool area look work out.
  • Newer decking options (like pavers or stamped concrete) can enhance durability and aesthetics.

How Draining helps:
While most decks don’t require draining, major replacements or resurfacing might, especially if coping (the edge of the pool) needs work.

To sum it up:
If your pool is due for a big renovation or essential repairs, draining might be necessary to get the job done right. Just make sure to follow San Diego’s water disposal guidelines to avoid fines and environmental damage.


The Proper Way to Drain Your Pool in San Diego

Draining your pool in San Diego requires careful planning and adherence to local regulations to protect the environment and maintain your pool’s integrity. Here’s a comprehensive guide to ensure you follow the proper procedures.

1. Pre-Draining Preparations

Before you start, check local regulations, talk to a pool professional, and plan how you’ll refill your pool. Don’t forget to turn off automatic systems to avoid equipment damage.

  1. Check Local Regulations
    Before you drain your pool, you need to check the rules in San Diego. The city says your pool water should not have chlorine, chemicals, or debris in it, and the pH level should be between 7 and 8. If you have a saltwater pool, there are extra rules, so it’s a good idea to read all the guidelines before you start.
  2. Consult Professionals
    Talk to a local pool professional or expert. They can give advice based on your pool and help you stay within rules. You can also call the County’s storm drain hotline for help.
  3. Plan for Refilling
    Consider the water source for refilling your pool and be mindful of any other water use restrictions in San Diego. Planning ahead ensures a smooth refilling process and helps in maintaining water conservation efforts. For information on water regulations consult the City’s water supply assessment.
  4. Turn off Automatic Systems
    Ensure all automatic systems, such as timers for pumps and cleaners, are turned off before draining. This precaution prevents potential damage to the equipment and ensures they don’t operate without water, which could lead to malfunctions.

2. The Draining Process

Drain the water slowly and carefully to prevent structural damage and avoid flooding. Keep an eye on the process and make sure the pool surface stays protected throughout.

  1. Hydrostatic Pressure Relief
    Draining too fast can cause your pool to lift or crack due to underground pressure. It’s important to manage this with hydrostatic relief valves or by consulting a professional.
  2. Controlled Flow Rate
    Drain water slowly to avoid flooding or damaging your yard plumbing. A steady flow helps protect your property and environment.
  3. Monitoring Throughout
    Keep an eye on the process from start to finish. This helps catch any issues early, like equipment problems or improper water drainage.
  4. Surface Protection
    When the pool is empty, surfaces can dry out or crack. Shade the interior if needed, and avoid leaving the pool empty longer than necessary.

3. Refilling and Balancing

Once empty, refill in stages, treat the new water, and rebalance your chemicals. Restart your equipment carefully.

  1. Initial Water Treatment
    Once refilled, treat the water to establish the correct chemical balance. This includes adjusting pH, alkalinity, and sanitizer levels to ensure the water is safe and comfortable for swimmers.
  2. Sequential Filling
    Refill the pool in stages, pausing periodically to check for any structural issues or leaks. This method allows you to address problems early, preventing potential damage as the pool fills.
  3. Comprehensive Balancing
    After the pool is full, perform a comprehensive test of the water to ensure all chemical levels are within the recommended ranges. Proper balancing prevents issues like algae growth and equipment corrosion.
  4. Equipment Restart
    Before restarting pumps, heater, and other equipment, ensure they are in good working condition. Prime the pumps as needed and monitor the system closely as it resumes operation to confirm everything functions correctly.

To sum it up:
By meticulously following these steps and adhering to local regulations, you can safely and efficiently drain and refill your pool in San Diego, ensuring both environmental responsibility and longevity of your pool.


DIY vs Professional Pool Draining

Draining your pool may seem like a manageable weekend project, but it’s more complex than most pool owners expect. While DIY can save money up-front, the risks can outweigh the savings if something goes wrong. Here’s what you should consider before deciding whether to tackle it yourself or call in a professional.

1. Structural Damage

Emptying a pool improperly can cause serious damage.
When water is removed, your pool becomes vulnerable to hydrostatic pressure from the ground below it. If not managed correctly, this pressure can lead to cracking, shifting, or even a “full pool pop”, where the entire structure lifts out of the ground. Professionals know how to relieve this pressure safely using hydrostatic valves and other precautions.

2. Equipment Damage

Pools aren’t meant to run dry.
A common mistake in DIY draining is forgetting to turn off or properly manage your pumps, filters, and automatic systems. Running equipment without water can burnout motors or damage seals, leading to costly repairs. Professionals will ensure your system is powered down safely and restarted correctly after refilling.

3. Code Violations

San Diego has specific rules for draining pools.
Discharging pool water into the streets, storm drains, or sewer system without proper treatment can result in fines. Water must be dechlorinated, free of debris, and pH balanced before it’s released. Professionals are familiar with these local codes and handle disposal safely and legally.

4. Insurance Issues

DIY Mistakes can void your coverage.
If draining causes damage to your pool, your insurance may not cover it, especially if it wasn’t done by a licensed professional. Insurers often see DIY pool draining as a high risk task and may consider mistakes as homeowner negligence.

The Takeaway!
DIY can be risky. For peace of mind, code compliance, and insurance protection, it’s often smarter to let the pool professionals handle your pool drain.


How Often Should You Drain Your Pool?

Living in sunny San Diego, means year-round pool enjoyment, but also means your pool water works overtime. So, how often should you drain it?

It’s a good idea to drain and refill your pool every 3 to 5 years. Over time, elements like minerals, chemicals, and debris build up, which can make it tough to keep the water clean and balanced, even if it looks okay on the surface.

You might need to drain it sooner if you’re dealing with:

  • High Calcium or Total Dissolved Solids (TDS)
  • Persistent Algae or Murky Water
  • Major Chemical Imbalances
  • Pool Repairs or Resurfacing

The Takeaway!
Draining should be done carefully during mild weather (Spring or Fall), and always in line with local rules. San Diego has strict guidelines about how and where pool water can be released, so don’t skip that step.


Frequently Asked Questions

1. How often should pool drains be cleaned?

It’s a good idea to have your pool drains cleaned at least once a year. If your pool gets a lot of use or has trees nearby, giving it a little extra attention more often really helps.

2. What are the signs of a clogged pool drain?

Look out for signs like sluggish water movement, debris collecting near the drain, or strange sounds from your pool filtration system.

3. Can I clean my pool drain myself?

You might be able to handle small clogs with few basic tools, but for anything serious, it’s best to call a professional with the right gear and know how.

4. How much does professional pool drain cleaning cost in San Diego?

It usually depends on your pool’s size and how stubborn the clog is, but most cleanings fall within the $150 to $300 range.

5. What causes pool drain clogs?

Things like leaves, dirt, body oils, algae and even calcium buildup from hard water can slowly collect and block the drain, making it harder for water to flow like it should.

6. Is drain cleaning necessary if my pool is clear?

Yes! Even crystal -clear water can hide buildup in the drain. Regular cleaning helps keep water flowing smoothly and prevent problems before they start.

7. Do I need to drain my pool to clean the drain?

Usually not! Most of the time, professionals can clear the drain with special tools, no need to empty your pool.

8. How can I prevent pool drain clogs?

Skim your pool regularly, use a cover when it’s not in use, and keep your water chemistry balanced. For extra peace of mind, schedule routine checkups with a pool professional to catch any issues early.

9. What’s the safest way to clear a clogged pool drain?

The safest option is to hire a professional who has the right tools and expertise to unclog without causing damage.

10. What are the dangers of a clogged pool drain?

A clogged drain leads to cloudy water, overworked pumps, bacteria growth, and even creates safety risks from increased suction pressure. It’s best to tackle it early!


Final Thoughts

Draining your San Diego pool every 3-5 years prevents build up, protects equipment, and keeps water clean. Spring or fall is best to avoid weather damage, and professionals ensure safety and compliance. Keeping your pool in top shape starts with knowing when and why to drain!

Now, do you want to keep your San Diego pool in top shape and avoid costly damage? Need help with pool draining? PoolLogic San Diego can ensure it’s done safely and in compliance with local regulations. With our 5-minute setup process, you can have our professionals drain your pool safely while you relax..

Looking for reliable pool drain and restart service near you? PoolLogic San Diego provides sufficient solutions for better pool care and maintenance. With the right care and attention, your pool can provide years for enjoyment for you, your friends, and your family. Let’s not keep that enjoyment waiting, contact us now for our pool services!

Stop stressing about your pool.

Join thousands of pool owners we help to keep their pools clean and safe.
Get A Quote