Septic Sand

Septic Sand — Title 5-Spec Sand for Leach Fields & Mound Systems

Septic Sand is the engineered-gradation sand that meets Massachusetts Title 5 specifications for septic system soil absorption beds. It's the sand your installer or septic engineer will spec by name — the gradation matters because too fine and the field clogs, too coarse and the effluent moves through too fast for proper treatment. We supply the spec-correct material that local Boards of Health and Title 5 inspectors look for.

At a glance

What it's good for

• Massachusetts Title 5 septic leach fields and soil absorption systems
• Mound system construction (when site soils don't pass perc)
• Engineered drainage layers under regulated stormwater systems
• Replacement and repair of failed septic system components

How much do I need?

Septic sand volumes are dictated by your engineered design — the bed dimensions and depth are set by your perc test, design flow, and Board of Health approval. As a rough yardstick, a typical Title 5 leach field of 30' × 60' with 24" of septic sand runs about 134 cubic yards. Your installer will give you the exact volume off the approved plan.

How Septic Sand compares

• vs. Concrete Sand (ASTM C33): Concrete sand is the general-purpose fine aggregate. Septic sand has a tighter, Title 5-specific gradation. Don't substitute — failing a Title 5 inspection means re-excavating the bed.
• vs. Mason Sand (ASTM C144): Mason sand is finer; septic sand has more coarse fraction for percolation. Different jobs.
• vs. Coarse Sand / Paver Sand: Coarse sand drains too fast for septic effluent treatment. Septic sand has the controlled mid-range gradation that lets effluent contact soil bacteria long enough to break down.
• vs. Fill Dirt / Loam: Fill dirt is the cover material over the septic system after install. Septic sand is the absorption bed material itself.

Frequently asked questions

Is Septic Sand the same as Title 5 sand?
Yes — our Septic Sand meets the Massachusetts Title 5 effluent disposal sand specification (per 310 CMR 15.255). When your installer or local Board of Health asks for Title 5 sand, this is what they mean.

Why does septic sand gradation matter?
Effluent needs the right travel time through the absorption bed to allow biological breakdown. Too fine = the field clogs and backs up. Too coarse = effluent flushes through untreated. The engineered Title 5 gradation hits the right balance.

Can I use Septic Sand for paver bedding or general landscape work?
You can, but it's overkill — and the Title 5 gradation costs more than general-purpose sand. Use Concrete Sand or Paver Sand for non-septic work.

Does Septic Sand pass Title 5 inspection?
Yes — our supply meets the spec. Your installer or engineer will collect a sample for the Board of Health if required.

How much does a cubic yard weigh?
About 2,700 lbs per cubic yard.

Do you deliver to septic job sites in the Boston area?
Yes — same-day and next-day bulk delivery across Suffolk, Middlesex, Norfolk, and Plymouth Counties.

Same-day and next-day bulk delivery, no minimum order. We deliver septic sand to job sites across Plymouth, Norfolk, Middlesex, and Suffolk County.

Pair with our coarse sand for general drainage backfill outside the regulated bed, or our fill dirt for finish grading and cover over the completed system.

Order today — the Title 5-spec sand that passes inspection.

• Same-day & next-day delivery available — weekends fill fast, order early.
• Curbside or on-property drop — let us know at checkout.
• Up to 6 yds per load for dense materials (gravel, soil, rock, sand) — mulch loads carry up to 10 yds. $100 flat rate, no minimum order.
• Job site delivery available — live load tickets and signed BOLs on request.
• Questions? Call (617) 645-0987 or see full delivery info →