Septic System Installation & Replacement Cost Guide — Stamford, CT

Verified 2025 pricing for septic system installation & replacement services in Stamford. Updated quarterly from local contractor data.

Service Cost Ranges

Service	Low	Average	High	Unit
New Septic System Installation	$11,600	$26,100	$58,000	per project
Septic Tank Replacement	$4,350	$8,700	$17,400	per project
Drain Field Replacement	$7,250	$17,400	$36,250	per project

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Older housing stock (pre-1958) increases complexity and materials cost

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✓Ask about seasonal discounts

✓Bundle multiple services

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See who offers the best value for money in Stamford.