How Much Does It Cost to Acid Wash Pool in Miami? (2026 Guide)

Quick Answer: A professional acid wash for an in-ground pool in Miami costs between $450 and $950, with the average homeowner paying around $675. The price depends on your pool’s surface type, the severity of the stains, and whether you need to drain the pool completely or use a spot-treatment method.

Miami’s unique environment accelerates pool staining. The intense sun, high humidity, and salt air in coastal areas create a perfect storm for calcium buildup, metal stains, and algae. A simple surface scrub won’t cut it anymore; you need the chemical power of acid washing to restore the finish.

Average Cost Breakdown

Budget pricing covers smaller pools (under 15,000 gallons) with light surface discoloration. The technician uses a diluted acid solution to scrub the plaster without a full drain. This is a quick fix for minor issues.

Mid-range is the most common scenario. It involves a full drain, a thorough acid wash of the entire shell, and a careful refill. This is necessary for heavy calcium deposits, rust stains, or when the plaster has become rough.

High-end applies to large custom pools, those with extensive tile work needing separate cleaning, or pools with complex geometry that requires more labor time. It may also include water balancing and initial chemical startup.

These figures represent Miami market rates for 2026. They include labor, specialized acid chemicals, equipment rental, and disposal of the wastewater. They do not cover structural repairs, replastering, or tile replacement if damage is found during the wash.

What Affects the Cost in Miami

1. Pool Size and Volume

Pool acid washing is often priced by the gallon of water or the surface area of the shell. A standard 12x24 pool holds about 15,000 to 18,000 gallons. A larger 16x32 pool can hold 30,000 gallons or more. Larger surface areas require more acid, more labor time for scrubbing, and longer drain/refill cycles, pushing the cost toward the $800–$950 range.

2. Surface Material Type

Most Miami pools are finished with standard white plaster. This is the most common surface to acid wash. However, if you have a pebble finish, quartz aggregate, or a vinyl liner, acid washing is risky or impossible. Pebble finishes can lose their texture if the acid is too strong, and vinyl liners will melt. Specialty surfaces often require gentler treatments or cost $100–$200 more for specialized handling.

3. Severity of Stains

Light gray scaling or minor algae is easy to remove. Heavy rust stains from iron in the water or dark green algae blooms require stronger acid concentrations and longer dwell times. If the stains are deep-set, the technician may need to repeat the process or use a secondary chemical treatment, adding $100–$150 to the bill.

4. Drain and Refill Logistics

In Miami, draining a pool is a major logistical step. You must remove the water safely to avoid damaging the surrounding landscape or violating city runoff rules. If your pool is in a flood zone or has a high water table, the crew may need to use submersible pumps to lower the water level gradually, which adds labor time and equipment costs.

5. Tile and Coping Cleaning

The acid wash often extends to the waterline tile and coping stones. Salt deposits and mineral buildup on white tile can turn it brown or gray. Professional crews use a separate acid mixture for the tile to prevent etching the grout. Including this service typically adds $75–$150 to the total project cost.

6. Miami-Dade Environmental Rules

Miami-Dade County has strict rules about pool water disposal. You cannot simply dump acidic, chemical-laden water into the storm drain system. The water must be neutralized to a pH between 6.0 and 8.0 before discharge. Licensed pool services handle this neutralization, but the cost of testing and proper disposal is factored into the higher end of the pricing spectrum.

Cost by Service Type

Spot acid wash targets specific areas of discoloration without draining the pool. The water is treated to neutralize the acid immediately after application. This is a lower-cost option for homeowners with isolated issues who want to keep their pool filled.

Full drain wash requires emptying the pool completely. This allows the technician to scrub every inch of the plaster with a stiff brush and acid solution. It is the most effective method for removing heavy calcium deposits and restoring a rough surface to a smooth finish.

Drain and refill combines the acid wash with a complete water replacement. This is often recommended if the water chemistry is severely unbalanced or if there are high levels of dissolved solids. It ensures the pool starts fresh with balanced water after the surface is cleaned.

Tile and coping services include the full pool wash plus a dedicated cleaning of the waterline tile and the concrete or stone coping. This prevents the “ring” of mineral buildup that often remains after a standard wash. It is the most comprehensive cleaning option available.

Florida-Specific Considerations

Building Codes: Miami-Dade County does not have a specific “pool acid washing” code, but they enforce strict environmental regulations under the Florida Building Code regarding stormwater management. Any water discharged from your pool must be neutralized. Professional pool companies must follow these guidelines to avoid fines.

Hurricane Season: The peak hurricane season runs from June to November. During this time, many pool contractors reduce their acid washing services because they are prioritizing storm damage repairs and emergency pumping. Scheduling your wash between December and May ensures faster service and better weather conditions for the neutralization process.

Permits: You generally do not need a building permit to acid wash a pool in Miami. However, if the process involves draining the pool into a sanitary sewer system (which is sometimes required in high-density areas), you might need a specific discharge permit from the Miami-Dade Water and Sewer Department. Always ask your contractor about local discharge rules.

Water Conservation: Miami faces periodic water restrictions. While draining a pool for a wash is standard, some neighborhoods or HOAs discourage full drains. In these cases, contractors may use a “wet acid wash” method, which is less effective on heavy stains but conserves water. This method might cost slightly more due to the extra labor required.

HOA Restrictions: Many Miami communities, especially in Coral Gables and Coconut Grove, have strict aesthetic rules. They may require that the pool water be balanced and the waterline clear before the pool can be used again. Some HOAs also restrict the noise level of pump equipment during certain hours. Get approval before starting the work.

Soil Conditions: Miami’s soil is often sandy and porous. When you drain a pool, the surrounding ground can shift, potentially causing the pool shell to crack or pop if the water table is high. A reputable contractor will inspect the ground stability before draining. If the soil is unstable, they may need to add structural supports, adding $200–$400 to the cost.

My Safe Florida Home: While this program focuses on roof and window hardening, it does not cover pool maintenance. However, maintaining a clean, chemically balanced pool can help prevent structural issues that might be flagged during a home inspection, indirectly supporting your home’s overall resilience.

How to Save Money on Pool Acid Washing in Miami

1. Schedule in the dry season. The best time for acid washing is January through April. Demand is lower, and contractors are more likely to offer 5–10% discounts. Avoid scheduling during the rainy season or right before hurricane season when crews are booked solid.

2. Combine with a full water test. Many pool companies offer a discount if you bundle the acid wash with a comprehensive water chemistry analysis. This ensures the water is balanced immediately after the refill, preventing the stains from returning quickly.

3. Ask about “wet” vs. “dry” wash. If your stains are light, ask if a wet acid wash is sufficient. This method keeps the pool filled and saves on the labor and water costs associated with draining and refilling. It can save $150–$250 on a typical job.

4. Clean the deck yourself. If the pool deck is dirty, ask if you can power wash it yourself before the crew arrives. This saves them time setting up and cleaning around the pool, which can lower the labor bill.

5. Check for package deals. Some pool maintenance companies offer annual cleaning packages that include one acid wash per year. If you sign a multi-year contract, the cost per wash can drop significantly, sometimes by 20–30%.

6. Get multiple quotes. Pricing for pool services in Miami varies widely. A small local operator might charge $450, while a large branded company might charge $900 for the same job. Get at least three written estimates to find the best value.

7. Verify discharge methods. Ask the contractor how they plan to dispose of the water. If they use a simple dump into the street, they might be cutting corners. Proper neutralization and disposal into a sanitary sewer or approved storm drain is the legal standard. A contractor who follows the rules properly is worth the extra cost for peace of mind.

When to Acid Wash Your Pool — Warning Signs

Your pool looks gray or chalky. If the plaster surface has lost its brightness and looks dull or dusty, it is likely covered in calcium scale. This buildup traps bacteria and makes it hard to keep the water clear. Acid washing removes this layer and reveals the original white plaster.

You have persistent rust or metal stains. Brown or orange spots that won’t go away with standard chemicals are usually iron or copper stains. These metals bond to the plaster and require acid to break the bond. If you see these stains, a simple shock treatment won’t work.

The water is cloudy despite good chemistry. If you keep the chemicals balanced and the filter running, but the water remains cloudy, the plaster surface might be porous or stained. The rough surface holds dirt and bacteria, making filtration ineffective. Acid washing smooths the surface and restores clarity.

Your pool is 5+ years old and never washed. Most pools benefit from an acid wash every 3 to 5 years. If your pool has gone a decade without one, the buildup is likely severe. Waiting too long can lead to permanent etching or the need for a full replaster.

You are preparing to sell your home. A clean, bright pool increases curb appeal and can help sell your home faster. A stained, gray pool signals neglect to potential buyers. A professional acid wash is a high-return investment before listing your property.

How to Hire a Pool Acid Washing Contractor in Miami

1. Verify their license. Check for a valid Florida Pool Service License (PSP) or a General Contractor license. You can verify this at MyFloridaLicense.com. Never hire an unlicensed handyman for this work; it requires specialized chemical knowledge.

2. Ask about their neutralization process. A good contractor will explain how they neutralize the acid before discharging the water. They should test the pH of the wastewater to ensure it is between 6.0 and 8.0. If they say they just dump it, walk away.

3. Check for insurance. Ensure the company has general liability insurance. Accidents happen, and if they damage your deck, landscaping, or the pool shell during the wash, you need coverage.

4. Get a detailed quote. The estimate should list the cost of labor, chemicals, equipment, and any potential extra fees for tile cleaning or water disposal. Avoid vague “call for a price” quotes.

5. Read recent reviews. Look for reviews on Google that mention “acid wash” specifically. Pay attention to comments about how they handled the water disposal and whether the pool looked good afterward.

6. Confirm the timeline. Acid washing is a multi-day process: drain, wash, neutralize, refill, and balance. Ask how long the pool will be out of service. A typical job takes 2 to 3 days.

7. Get a warranty. A reputable contractor should offer a warranty on their work, usually for 30 to 90 days, ensuring the stains don’t return immediately due to poor application.

Frequently Asked Questions

How much does it cost to acid wash a pool in Miami in 2026?

Most homeowners pay between $450 and $950. The average cost is around $675. Your price depends on pool size, stain severity, and whether you need a full drain and refill.

Does acid washing damage the pool surface?

If done correctly by a professional, acid washing removes the top layer of calcium and mineral buildup without damaging the plaster. However, over-washing or using too strong a solution can etch the surface. Always hire a licensed expert.

How long does the pool stay out of service?

The process typically takes 2 to 3 days. This includes draining, acid scrubbing, neutralizing, refilling, and balancing the water chemistry. Rainy days can extend this timeline by a day or two.

Can I acid wash my pool myself?

Technically yes, but it is highly discouraged. Handling concentrated acid requires PPE and specific training. The risk of chemical burns, pool damage, or violating Miami-Dade discharge rules is too high for DIYers.

Does the cost include water refill?

Yes, most quotes include the labor and water cost for refilling the pool. However, you are responsible for the water bill from Miami-Dade Water and Sewer if you are on a metered system. The water usage can be significant, often 15,000 to 30,000 gallons.

How often should I acid wash my pool?

Most Miami pools need an acid wash every 3 to 5 years. If you have hard water or use well water, you might need it more frequently. Regular testing and maintenance can extend the time between washes.

Bottom Line

Acid washing a pool in Miami costs $450 to $950 for most standard in-ground pools. This service is essential for removing the heavy calcium and metal stains caused by our humid, coastal climate. While it requires draining the pool and careful chemical handling, the result is a bright, clean surface that looks years younger. Always hire a licensed professional who understands Miami-Dade’s strict water discharge rules to avoid fines and damage.

Related guides you may find useful:

• Cost to Resurface Pool in Miami 2026
• Cost to Install Saltwater Pool System Florida
• Cost to Repair Pool Deck in Miami 2026