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  • Verified reviews icon451
    Verified french drain services reviews

Top-Rated French drain pros in Onset - Updated Nov 2026

Avatar for Drain Frog
Drain Frog
5.0(
29
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessDrain Line Breakage - Camera Locate+1 more

Serving Onset, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Credit card accepted

"Patrick Maclary of Drain Frog is a true professional, delivering top service promptly and courteously. He fully explained the nature of the service to be performed as well as the price Drain Frog would charge. I would recommend Drain Frog to my friends and family without reservation."
Response time3 hrs
Response rate93%
15 neighbors recently requested a quote
Avatar for Drycrete Waterproofing
Drycrete Waterproofing
5.0(
19
)
Basement Drainage Channels - InstallFoundation Drainage - Install or Replace

Serving Onset, MA and surrounding areas

Approved

In business since 1979

Free estimates

Warranties offered

"Jason and his crew came on time, performed the repair quickly and professionally and left a job that they can be proud of. We have had several days of rain, some rather intense, and i am pleased to say that my basement is dry for the first time in a year or more!"
Drain systems / Sump pump
On the job
Crew
3/4HP Pump
Sump pump

+9

Response time6 hrs
Response rate96%
Recommended by70%of homeowners
Avatar for Mr. Rooter Plumbing of Southern Mass
Mr. Rooter Plumbing of Southern Mass
3.6(
726
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessDrain Line Breakage - Camera Locate+2 more

Serving Onset, MA and surrounding areas

Approved

In business since 1990

Emergency services offered

Warranties offered

"I hired this company because they charged me $49.99 to come to the house. Lewis , the technician, was wonderful. He replaced the toilet as I agreed. The toilet I wanted was a bit more expensive so I went with his suggestion . The total was $850. Which was high, minus my $49.99. Now $799. He sent me the invoice and I feel I was charged for $99.99 member fee, and $44.00 for an almost empty bottle of Mr Rooter drain cleaner. What?? That's crazy I got the least expensive toilet $223.00 at Home Depot. And I paid $799 for the service. Oh the $99.00 member fee was Free because I would have had to pay an additional $102.00 without it. What the heck does that mean. I should have left the $49.99 and gotten someone else to do the job. Saving at least $200.00 This has no reflection on the technician, he was doing his job. But I wouldn't hire this company. My mistake."
Laundry Tray Pump
Laundry Tray Pump
Heat Zone Piping
Boiler
Water Heater

+24

Response time1 hour
15 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Pioneer Basement
Pioneer Basement
4.5(
265
)
Basement Drainage Channels - InstallFoundation Drainage - Install or Replace

Serving Onset, MA and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"The project went great, from the first phone call to the end of the job. We were called a day before to confirm the arrival time, and the work crew arrived on schedule. It turned out they had some additional material from a previous job that day, so they actually repaired a bit more of the wall than had been agreed on, which we really appreciated. When we originally scheduled the job, we were given information on other services that Pioneer Basement provides, but at no time were we given any sales pitches. We're very confident that we picked the right firm to do our foundation repairs -- we'll definitely call them first for any similar work, and will recommend them to friends."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+5

Response time2 days
4 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Inner Boston Masonry & Construction, Corp.
Inner Boston Masonry & Construction, Corp.
5.0(
43
)
Foundation Drainage - Install or ReplaceYard Drainage

Serving Onset, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Contacted Mark within 3 days he was at my home and providing a detailed quote. Might seem small but he was the only one out of 4 contractors who actually measured the space to provide an accurate and detailed estimate. He while discussing what I wanted with me made many recommendations and even mentioned ways to get the job done but at a lower cost. He had the estimate to me within 2 days and it was super detailed and broken down with 3 different ways to complete it. He was on time daily as was his crew. Work areas were cleaned daily. He closed up a broken window for us, redid a dirt floor with drainage and concrete, repointed and waterproofed our basement foundation, ripped out and fully replaced basement access stairs. He even noticed a window that was broken we didn’t and closed it up for no charge. He added a drain to the exterior steps at no charge wasn’t in contract he just knew it was needed, the steps he replaced had asphalt around them and he even repaired the asphalt at no c"
My jobs
My jobs
My jobs
My jobs
My jobs

+11

Response time4 hrs
Response rate99%
6 neighbors recently requested a quote
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French Drains FAQs, answered by experts

Usually it’s fine to leave a toilet clogged overnight, as long as it’s not close to overflowing. In some cases, the extra time may give the clog time to work itself out. For example, if it’s caused by an excess of toilet paper, letting it sit could result in the clog dissolving and you may be able to simply flush it away by the time you wake up. 

Only let it sit though if you have more than one toilet in the home.

Your sewer line can get grimy quickly. To prevent sludge buildup in your sewer line, pour a mixture of 1/3 cup of vinegar and 1/3 cup of baking soda down each drain in your home once a month. After about 30 minutes, flush the drain with hot water.

Some plumbers recommend 3/4 cup of bleach instead to clean any germs and bacteria that may build up in your sewer line. But this won’t break down any active clogs, and it cannot be combined with vinegar, as the mixture will create a toxic, hazardous gas.

If you have a sink stopper, it can feel more challenging to clean the drain without removing it, but here are a few simple steps:

  • Pour ½ cup baking soda into the drain using a funnel

  • Pour 1 ½ cups vinegar into the drain

  • Close the sink stopper for 15–20 minutes

  • Open the drain

  • Pour 2 cups of boiling water down the drain (be cautious as boiling water can damage some types of pipes)

If the drain isn’t unclogged, repeat the process.

Avoid flushing non-degradable items, schedule regular inspections, and address minor clogs promptly.

The P-trap (or S-trap in older homes) under your shower is designed to prevent sewer gas from coming back up, so you shouldn’t normally experience foul odors coming from your shower drain. If you do, the vent stack that introduces air into your plumbing system may be clogged, or you may have a more severe sewer main blockage. In either case, hire a plumber to fix the issue for you.

The Onset, MA homeowners’ guide to french drain services

From average costs to expert advice, get all the answers you need to get your job done.