Average Hourly Cost: The average hourly cost for septic tank leach field replacement in the septic system service category is $150 - $200 per hour.

Cost Breakdown: The cost of septic tank leach field replacement is generally determined by the size of the leach field, the type of soil, the type of tank, the complexity of the job, and the location of the service provider. The cost of the job also depends on the type and quality of accessories used, such as pipes and fittings.

Factors Affecting Cost: The type and quality of accessories used can affect the cost of the job. The complexity of the job and the location of the service provider can also affect the cost. The size of the leach field and the type of soil can also influence the cost.