The cost to refill a pool is usually $50-$300 for municipal water, or about $200-$900 when water is trucked in, depending on pool capacity and local rates. The biggest price drivers are gallons needed, sewer billing rules, delivery minimums, and access for a water truck.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Municipal water for a 15,000-gallon fill | $45 | $120 | $300 | Water-only estimate; local rates vary |
| Municipal water for a 25,000-gallon fill | $75 | $200 | $500 | May be higher in high-rate areas |
| Bulk water delivery | $200 | $450 | $900 | Truck size, distance, and minimum charge matter |
| First chemical balancing after refill | $50 | $150 | $350 | Depends on water test and pool volume |
| Typical total with municipal water | $100 | $250 | $650 | Includes a basic balancing allowance |
What a 15,000- to 25,000-gallon pool refill costs
For most residential pools, a full refill using a garden hose costs roughly $50-$500 in water charges. A typical 18-by-36-foot in-ground pool holding about 20,000 gallons often adds $80-$250 to a municipal water bill, before any sewer charge or chemical treatment. Homes with tiered rates, drought surcharges, or high water prices can pay more.
Bulk delivery costs more per gallon but may be useful when a fast fill is needed or household water pressure is low. A truck delivering 5,000 gallons commonly costs about $200-$500, so a 20,000-gallon fill could require several loads and total $800-$2,000 in some markets. Confirm truck capacity and the quoted number of loads before booking.
For a standard pool, budget about $100-$300 for water from a hose, or $400-$1,000 for a typical delivered-water fill. These planning ranges assume ordinary access, no major leak repair, and no unusually high sewer charge.
Assumptions: 15,000-25,000 gallons, U.S. residential water rates, standard pool access, and basic post-fill testing.
How water, labor, delivery, and chemicals shape the bill
A refill quote can include more than the water itself. Municipal utilities generally charge by the thousand gallons, while water haulers price by load, distance, and minimum trip. Pool service companies may separately charge to test and balance the water or restart equipment.
| Cost component | Typical range | Pricing basis | What changes the charge |
|---|---|---|---|
| Municipal water | $3-$20 per 1,000 gallons | Metered usage | Local rate tiers and seasonal surcharges |
| Water truck delivery | $200-$500 per 5,000 gallons | Load or minimum visit | Distance, truck size, and wait time |
| Pool service labor | $75-$150 per hour | Hourly or service visit | Testing, equipment restart, and travel |
| Initial chemicals | $50-$350 | Pool volume and water test | pH, alkalinity, hardness, and sanitizer needs |
| Drain and disposal | $100-$500 | Service call or pump time | Drain method, access, and local disposal rules |
Water is the main direct expense for a hose fill, but sewer billing can make the utility bill unexpectedly high. Some providers charge sewer fees based on all metered water; others offer a pool-fill adjustment if the owner submits a meter reading or requests a temporary deduction. Ask before filling, since credits may require advance notice or proof of gallons used.
When a pool company charges for setup or balancing, request an itemized quote that separates chemicals from labor. For example, two hours of service at $100 per hour adds $200, apart from the cost of the water and treatment products.
Check whether the quote includes water, delivery, sewer charges, chemical balancing, and equipment restart. Comparing only the advertised price per truckload can understate the complete refill expense.
Pool gallons and water rates determine the basic price
Pool capacity is the clearest way to estimate a refill. A small above-ground pool may hold 5,000-10,000 gallons, while many family-size in-ground pools hold 15,000-25,000 gallons. Larger or deeper pools can exceed 30,000 gallons, raising both the water charge and the time required to fill.
For a rough estimate, multiply the pool’s gallons by the utility’s price per 1,000 gallons, then divide by 1,000. At $8 per 1,000 gallons, a 20,000-gallon refill costs about $160 for water. This does not include sewer charges, fixed monthly fees, delivery, or chemicals.
| Pool volume | Water at $4 per 1,000 gallons | Water at $10 per 1,000 gallons | Water at $20 per 1,000 gallons |
|---|---|---|---|
| 8,000 gallons | $32 | $80 | $160 |
| 15,000 gallons | $60 | $150 | $300 |
| 20,000 gallons | $80 | $200 | $400 |
| 30,000 gallons | $120 | $300 | $600 |
These examples use a single illustrative water rate. Utilities may charge progressively higher prices once household use passes a threshold, so a pool fill can move part of the monthly usage into a more expensive tier. Pool dimensions and depth estimates are not always exact; check the builder’s specifications or prior fill records when possible.
Every additional 5,000 gallons adds $20-$100 at water rates of $4-$20 per 1,000 gallons. That makes accurate capacity more useful than relying on a generic “average pool” figure.
Hose filling versus water-truck delivery
A household hose is usually the least expensive choice when water rates are reasonable and the pool can fill gradually. A 20,000-gallon pool may take 24-48 hours or longer, depending on hose flow and household pressure. Filling overnight can be convenient, but owners should monitor the water level and equipment, and should not leave a hose running unattended for extended periods.
Truck delivery can fill a pool much faster, but the price per gallon is usually higher. A 5,000-gallon load at $300 equals $60 per 1,000 gallons, compared with a municipal rate that may be a fraction of that amount. Delivery becomes more attractive when the site has limited hose access, water restrictions allow trucked water but limit hose use, or filling speed is important.
Truck operators may require a stable parking location and a clear route for hoses. Long hose runs, steep driveways, narrow gates, or difficult turning space can add fees or make delivery impossible. Ask whether the quote covers each load, travel, setup, and any waiting time.
Use a hose for lower cost when time and water pressure allow; choose delivery when speed or site conditions justify the premium. For a large pool, compare the complete delivered amount with the utility bill rather than comparing one load against the entire fill.
Regional water prices and truck access change the estimate
Local pricing can differ substantially. A refill in a lower-rate town may cost less than $100 in water for a modest pool, while a high-cost metro area or drought-affected region can push a similar fill above $300 before sewer charges. Local water bills, rather than a national average, provide the most reliable estimate.
Delivered water varies with distance to the source and the number of trips. A nearby supplier may charge $200-$350 for a 5,000-gallon load, while a remote property or a market with few haulers may face $400-$700 or more per load. A 20,000-gallon pool could therefore have a delivery bill of $800-$2,800, depending on haul distance, truck capacity, and minimum charges.
Urban sites can have higher labor or access fees because of traffic, parking limits, and restricted delivery windows. Rural properties may avoid congestion but pay for longer travel. In either case, obtain a quote using the exact address, estimated pool gallons, and delivery location.
Ask for a delivered price per gallon and the total number of loads, not just a per-trip starting rate. A price difference of 25%-50% between nearby service areas is plausible when travel distance and supplier availability differ.
Fill time, service labor, and setup fees to expect
Fill duration depends on flow rate, hose diameter, water pressure, and delivery method. A standard garden hose delivering 5-10 gallons per minute may need about 33-67 hours to supply 20,000 gallons. A higher-flow connection can shorten that time, but household plumbing should not be altered without a qualified professional.
Water trucks typically unload much faster, though multiple trips and travel time still apply. A delivery company may complete one load in a short visit, but a 20,000-gallon pool requires four 5,000-gallon loads. Some providers charge a minimum fee of $150-$300 per visit, even when the customer needs less than a full load.
Pool service labor is separate when a technician checks water chemistry, primes pumps, inspects the filter, or restarts equipment. A basic visit may cost $75-$150, while more involved troubleshooting can reach $200-$500. A refill after repairs may need a leak test or equipment inspection before water is added.
Include any minimum visit fee and post-fill service call in the estimate. A low water rate does not eliminate labor charges when the pool requires equipment attention or professional chemical balancing.
Drainage, repairs, and water treatment can add charges
Some pools need only a partial top-off, not a complete refill. If the water is low by 2 feet in a pool with a 500-square-foot surface area, the missing volume is roughly 7,500 gallons, using about 7.48 gallons per cubic foot. Replacing only the water needed can avoid a much larger bill, provided the water chemistry and pool condition do not require a full drain.
Draining an entire pool can add $100-$500 for pumping or service, and disposal rules vary by location. Water may need to be routed to an approved sanitary drain rather than a street or storm drain. Improper drainage can damage landscaping, affect neighboring property, or create code problems. Some pools also require a professional to manage hydrostatic pressure risks before draining.
After filling, the water may need balancing for pH, alkalinity, calcium hardness, and sanitizer. A basic chemical adjustment can cost $50-$150, while difficult source water or a large pool may require $150-$350 or more. Well water can need extra treatment for metals or staining; a water test helps identify the required products before large amounts are added.
Confirm the source water is suitable and the discharge method is allowed before paying for a drain and refill. Skipping a needed test can lead to extra chemical expense or surface staining after the pool is full.
How to lower the pool refill bill without cutting corners
First, verify the pool’s actual capacity and whether a full refill is necessary. A partial refill or water replacement may be enough after evaporation, splash-out, or routine maintenance. If the pool is being drained because of a repair or contamination issue, have the cause addressed before refilling so the new water is not immediately lost or spoiled.
Call the water utility before filling to ask about sewer billing, pool-fill credits, tiered rates, and any temporary restrictions. Record the meter reading before and after the fill if the utility requires documentation. Scheduling a fill across billing periods is not always cheaper, but understanding usage tiers may help avoid an avoidable rate jump.
For truck delivery, request two or three itemized quotes with the same gallons, delivery window, and access details. Ask about load size, travel fees, minimums, and whether the price includes water testing. If using a hose, choose a time when demand is low and monitor the pool, while following local watering and drought rules.
Do not pay for premium treatment or a full drain unless a test or pool condition supports it. At the same time, avoid filling a pool with untreated or unsuitable water simply because the source is cheaper; correcting metals, hardness, or contamination afterward can cost more than using a suitable source initially.
The most dependable savings come from filling only the gallons needed, checking sewer billing, and comparing complete quotes. Keeping the pool covered and repairing leaks also reduces how often a full refill becomes necessary.