Liquid chlorine prices
Liquid pool chlorine (sodium hypochlorite) from 19 stores, sorted by cost per pound of chlorine, so a 12.5% jug and a 10% jug compare fairly. Most stores sell liquid for in-store pickup only; filter those out if you need it shipped.
Cheapest right now
$4.25/gal
Stearns Swim Shock 12.5% 4-Pack · Blain's Farm & Fleet
Typical price
$8.18/gal
Median across 17 priced listings
Store
All stores
Brand
32 listingsAll brands
| Product | Store | Checked | Buy | |||||
|---|---|---|---|---|---|---|---|---|
| Stearns Swim Shock 12.5% 4-Pack Stearns12.5%Store pickup | 4 x 1 gal | Blain's Farm & Fleet | $16.99 | $4.25 | $3.53 | $0.295 | today | View deal |
| Liquid Chlorine 2.5 Gallon Refill Generic10% (assumed)Local: Miami-Dade, FL | 2.5 gal | Kendall Pools | $8.59 | $3.44 | $3.70 | $0.309 | today | View deal |
| Liquid Chlorine 2.5 Gal. Refill Generic10% (assumed)Local: Miami, FL | 2.5 gal | Village Spa & Pools | $9.75 | $3.90 | $4.20 | $0.351 | today | View deal |
| Liquid Chlorine Jug Refill 2.5 Gal - Refill Only Generic10% (assumed)Local: Broward & Palm Beach, FL | 2.5 gal | The Pool Place Co. | $9.99 | $4.00 | $4.30 | $0.359 | today | View deal |
| HASA Sani-Chlor Liquid Chlorine 12.5% - Disposable, 4 Gallons HASA12.5%Local: Los Angeles area, CA | 4 x 1 gal | Discount Pool Mart | $27.96 | $6.99 | $5.81 | $0.485 | today | View deal |
| HASA Sani-Chlor Liquid Chlorine 12.5% - Refillable (refill) HASA12.5%Local: Los Angeles area, CA | 1 gal | Discount Pool Mart | $6.99 | $6.99 | $5.81 | $0.485 | today | View deal |
| Liquid Chlorine Pool Shock 12.5% - Case (4 Gallons) Champion (CPDI)12.5% | 4 x 1 gal | Leisure Pool & Spa Supply | $27.99 | $7.00 | $5.82 | $0.486 | today | View deal |
| Lynde Liquid Pool Shock 12.5% - Case of 4 x 1 Gallon Lynde12.5%Local: Chanhassen, MN | 4 x 1 gal | Premier Pool & Spa | $27.99 | $7.00 | $5.82 | $0.486 | today | View deal |
| Liquid Chlorine Pool Shock 12.5% - Case (4 Gallons) Champion12.5% | 4 x 1 gal | BulkChlorine.com (div. of Leisure Pool & Spa Supply) | $29.99 | $7.50 | $6.24 | $0.520 | today | View deal |
| Champion Chlorine Liquid 12.5% 4 Gallon Case Champion12.5%Local: Henderson, NV | 4 x 1 gal | Pool Supply Depot | $32.00 | $8.00 | $6.65 | $0.555 | today | View deal |
| Liquid Pool Chlorine 12.5% Sodium Hypochlorite - 55 Gallon Drum DIYChemicals12.5% | 55 gal | DIYChemicals | $449.99 | $8.18 | $6.81 | $0.568 | today | View deal |
| Pool Essentials Chlorinating Liquid for Swimming Pools, 2-Pack Pool Essentials10%Store pickup | 2 x 1 gal | Walmart | $12.86 | $6.43 | $6.93 | $0.578 | today | View deal |
| HASA Liquid Chlorine 4x1 Gallon Case (refillable bottles) HASA12.5%Local: Fresno, CA | 4 x 1 gal | Benchmark Pool Supply | $33.95 | $8.49 | $7.06 | $0.589 | today | View deal |
| HASA 4 Gallon Liquid Chlorine Case HASA12.5%Local: Dallas–Fort Worth, TX | 4 x 1 gal | Simplified Pools | $35.99 | $9.00 | $7.48 | $0.625 | today | View deal |
| HDX 1 Gal. Pool-Care Chlorinating Liquid (2-Pack) HDX10% (assumed) | 2 x 1 gal | Home Depot | $13.98 | $6.99 | $7.53 | $0.628 | today | View deal |
| Kem-Tek Chlorinating Liquid 2-Pack (1 gal bottles) Kem-Tek10% | 2 x 1 gal | Lowe's | $13.98 | $6.99 | $7.53 | $0.628 | today | View deal |
| Pool Essentials 1 Gallon Liquid Pool Chlorine Pool Essentials10% | 1 gal | Lowe's | $7.98 | $7.98 | $8.60 | $0.717 | today | View deal |
| Kem-Tek Chlorinating Liquid 2-Pack (1 gal bottles) Kem-Tek10% | 2 x 1 gal | Ace Hardware | $15.99 | $8.00 | $8.61 | $0.719 | today | View deal |
| Liquid Chlorine 12.5% Sodium Hypochlorite - 1x case (4 gal) EZ Pools12.5% | 4 x 1 gal | EZ Pools | $56.00 | $14.00 | $11.65 | $0.972 | today | View deal |
| Champion Pool Shock 12.5% Liquid Chlorinator - 4-Pack, 1 Gallon Each Champion12.5% | 4 x 1 gal | Walmart | $64.99 | $16.25 | $13.52 | $1.128 | today | View deal |
| C&N Spire Liquid Pool Shock Sodium Hypochlorite 12.5%, 4 Gal C&N Spire12.5% | 4 x 1 gal | Walmart | $69.99 | $17.50 | $14.56 | $1.215 | today | View deal |
| Champion Pool Shock 12.5% Liquid Chlorine - 2 Pack, 1 gal Champion12.5% | 2 x 1 gal | Walmart | $36.99 | $18.50 | $15.38 | $1.284 | today | View deal |
| Kem-Tek Chlorinating Liquid 2-Pack (1 gal bottles) Kem-Tek10% | 2 x 1 gal | Walmart | $28.78 | $14.39 | $15.50 | $1.294 | today | View deal |
| Liquid Pool Chlorine 12.5% Sodium Hypochlorite - 4 Gallon Pack DIYChemicals12.5% | 4 x 1 gal | DIYChemicals | $80.99 | $20.25 | $16.84 | $1.406 | today | View deal |
| BioGuard Chlorinating Liquid, 4 Gallon Case BioGuard10% (assumed) | 4 x 1 gal | Walmart | $65.99 | $16.50 | $17.77 | $1.483 | today | View deal |
| Champion Pool Shock 12.5% Liquid Chlorinator - 1 Gallon Champion12.5% | 1 gal | Walmart | $29.99 | $29.99 | $24.95 | $2.082 | today | View deal |
| Champion Pool Shock 12.5% Liquid Chlorinator - 1 Gallon Champion12.5% | 1 gal | Amazon | live | -- | -- | -- | at click | Check price |
| Champion Pool Shock 12.5% Liquid Chlorinator - 4-Pack, 1 Gallon Each Champion12.5% | 4 x 1 gal | Amazon | live | -- | -- | -- | at click | Check price |
| Champion Pool Shock 12.5% Liquid Chlorine - 2 Pack, 1 gal Champion12.5% | 2 x 1 gal | Amazon | live | -- | -- | -- | at click | Check price |
| Leslie's Liquid Chlorine 4-Pack of 1 Gallon Bottles Leslie's10.5%Store pickupOut of stock | 4 x 1 gal | Leslie's | $29.99 | $7.50 | $7.64 | $0.637 | today | View deal |
| Leslie's Liquid Chlorine 2-Pack of 1 Gallon Bottles Leslie's10.5%Store pickupOut of stock | 2 x 1 gal | Leslie's | $15.99 | $8.00 | $8.14 | $0.680 | today | View deal |
| Champion Pool Shock 12.5% Liquid Chlorine - 2 Pack, 1 gal Champion12.5%Out of stock | 2 x 1 gal | Lowe's | $44.63 | $22.32 | $18.56 | $1.549 | today | View deal |
$/lb chlorine is the price divided by the pounds of available chlorine in the container, so a 50 lb bucket, a 10% jug and a 12.5% jug all compare fairly.How it's calculated.
What to know before buying liquid chlorine
Liquid chlorine is sodium hypochlorite, sold at 10% or 12.5% strength. A 12.5% jug carries about 30% more chlorine than a 10% jug of the same size, so price per gallon alone misleads; sort by $/lb chlorine instead.
It loses strength as it sits, faster when warm. Buy what you will use in a few weeks and keep it in the shade. Liquid adds no stabilizer and no calcium, which is why it is the go-to for pools where CYA has crept up.