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St. Onge Septic Tank Service, Inc.Septic service company in Merrimack, NH

St. Onge Septic Tank Service, Inc. is a septic service company at 568 Mountain Rd, Goffstown, NH 03045, ranked #12 of 70 septic service companies in Merrimack and rated 4.6 from 47 Google reviews. Open Monday to Friday.

Merrimack, NHUpdated 0 paid placements in any rankingHow we rank

Call (603) 627-2809Website ↗

Key facts

Key facts about St. Onge Septic Tank Service, Inc.
Address568 Mountain Rd, Goffstown, NH 03045, Merrimack, NHGet directions
Phone(603) 627-2809
Websitestongeseptic.com
HoursMonday to Friday: 8 AM – 3 PM
Google rating4.6 from 47 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • Septicmain tradeGoogle main category

Service area

Serves Merrimack and 11 towns within 25 miles: Bedford, Manchester, South Hooksett, Weare, Milford, Bow Bog, Litchfield, Suncook, Auburn, Pembroke and Londonderry.

Based in Merrimack, NHView on map

Opening hours

Opening hours for St. Onge Septic Tank Service, Inc.
DayHours
Monday8 AM – 3 PM
Tuesday8 AM – 3 PM
Wednesday8 AM – 3 PM
Thursday8 AM – 3 PM
Friday8 AM – 3 PM
SaturdayClosed
SundayClosed
  • Open evenings — no
  • Open Saturdays — no
  • Open Sundays — no

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.6from 47 Google reviews

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Questions about St. Onge Septic Tank Service, Inc.

How is St. Onge Septic Tank Service, Inc. ranked in Merrimack?

St. Onge Septic Tank Service, Inc. is ranked #12 of 70 septic service companies in Merrimack by CR Score, with 56 out of 100 as of November 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

What are St. Onge Septic Tank Service, Inc.’s hours?

St. Onge Septic Tank Service, Inc. is open Monday to Friday. Its listed hours are Monday to Friday, 8 AM – 3 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does St. Onge Septic Tank Service, Inc. serve?

Serves Merrimack and 11 towns within 25 miles: Bedford, Manchester, South Hooksett, Weare, Milford, Bow Bog, Litchfield, Suncook, Auburn, Pembroke and Londonderry. The list is based on the business's location and the usual service radius for septic and sewer service. Confirm your address is covered when you call.

What do Google reviews say about St. Onge Septic Tank Service, Inc.?

St. Onge Septic Tank Service, Inc. has a rating of 4.6 from 47 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact St. Onge Septic Tank Service, Inc.?

Call St. Onge Septic Tank Service, Inc. on (603) 627-2809. The business is at 568 Mountain Rd, Goffstown, NH 03045, Merrimack, NH. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.

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Compare nearby septic service companies

St. Onge Septic Tank Service, Inc. compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
St. Onge Septic Tank Service, Inc. (this business)—564.6 (47)—NoNo
Felix, A Wind River Company#10564.9 (609)—YesYes12.8 mi
Granite State Sewer & Drain Cleaning#11564.9 (380)—NoNo14.9 mi
Garside Sewer & Septic Service LLC#13564.8 (56)—NoNo13.8 mi

See all 70 ranked septic service companies in Merrimack