Licensed C-57 Well Drilling Contractor · CSLB #1146787C-57 Well Drilling · CSLB #1146787
Big River Drilling
Rose bush at the edge of a young pistachio orchard
About Big River Drilling

A Well Drilling Company Based in Riverdale

Our Story

A Water Well Drilling and Pump Service Company Based in Riverdale

Big River Drilling is run by Wes Harmon out of its yard in Riverdale and has been drilling wells in the valley since 1998. We are a licensed C-57 well drilling contractor. In California, a C-57 license covers installing and repairing water wells and their pumps, and we do both. Most of our work is domestic, for homes that run on their own well.

A mud rotary drill rig and a pump crew work under one company. The rig drills new water wells, plus replacement wells when an old well goes dry or silts up. The pump crew handles well pump repair, new pumps and pressure tanks. We also trench from the well to the house for the water line and the electrical line to the pump.

Every new well starts with a free on-site estimate that spells out the depth range, casing, seal, pump and tank. As the licensed driller, we handle the county well permit application. The rig drills the borehole, then the casing, the gravel pack and the sanitary seal go in. We develop and pump-test the well, then set the pump and tank and run the lines to the house.

Our customers live on ranchettes, rural lots and the county edges of valley towns, where city water never reached. We also drill stock and irrigation wells for small farms and ranches. From Riverdale, we work Fresno, Kings and Tulare counties and out to Kern, Madera and Merced counties. When the water quits, our 24-hour emergency well service takes calls day or night, weekends included.

Crew member in a hard hat and a coworker working at a well head Riverdale, CA · San Joaquin Valley
Licensed C-57 Well Drilling Contractor
New Wells Mud Rotary Drilling
Pump Service Repairs and Replacements
24 Hours Well and Pump Calls
How We Run

Three Things You Can Count On

Simple Checks First

When the water stops, call or text. We walk you through the simple checks first, like the breaker and the pressure gauge. If those do not bring the water back, our pump crew comes out.

Well Records Before the Rig Moves

Before we price a well, we read the records of wells drilled near you. Around Riverdale, state records show new home wells running about twice as deep as those from the 1990s and 2000s.

Help When a Well Goes Dry

If your well has gone dry, ask us about the well replacement assistance programs that serve valley households. We can point you to the right program and help you get the application started.

Why Choose Big River Drilling

We Drill the Well, Set the Pump and Run the Lines

Licensed C-57 Well Drilling Contractor

California law says only a C-57 licensee may drill a water well. Big River Drilling is a licensed C-57 well drilling contractor.

Rig and Pump Crew, One Company

Our mud rotary rig drills the well, and our pump crew sets the pump, the pressure tank and the lines. You deal with one company from the permit to water at the tap.

Well and Pump Calls 24 Hours a Day

No water at night or on a weekend? We take well and pump calls 24 hours a day, seven days a week.

Based in Riverdale

We work Fresno, Kings and Tulare counties from our Riverdale yard, and out to Kern, Madera and Merced counties.

How We Work

How a Job With Big River Drilling Runs

From the first call to water at the tap, here is how it goes.

1

Call or Text for a Free Estimate

Call or text (559) 867-3806, or send the form. Tell us about the property and what you need, and we set up a free estimate.

2

Site Visit and Well Records

We look for a well spot with room for the rig. State standards keep it at least 100 feet from the septic tank and leach field. We also pull the records of nearby wells.

3

County Well Permit

As the licensed driller, we apply for the county well permit. Drilling starts only after the county issues it.

4

Drilling, Casing and Seal

Our mud rotary rig drills the hole. We set the casing and gravel pack, then place the sanitary seal that keeps surface water out.

5

Development and Pump Test

We develop the well to clear out drilling mud and fine sand. Then a pump test measures the flow and tells us where to set the pump.

6

Pump, Tank, Lines and Water On

We set the pump and the pressure tank and run the lines to the house. State standards call for disinfecting the well before the water goes on.

Google Reviews

Rated 4.0 on Google by Well Owners Across the Valley

Real reviews from real well and pump jobs, 9 reviews on Google.

Read All Reviews

Helped out my parents asap when the others wanted us to wait 2 weeks. He came out same day!!!! and changed the valve in only 10 minutes “thank you sir!! “ (water well drilling)

Ashley Cami2 years ago · Google review

Open 24 hours. The owner is always available and always answers the phone or calls back. He’s very attentive, and when we have problems with the well, he will come out and check it immediately. He takes full responsibility for his work, which is excellent. we just call and he’ll walk us through the situation and it’s usually something simple. He also was able to get us a well at reduced rate through a program that he works with

Renee2 years ago · Google review

Great fokes to do business with

Free Estimates

Get In Touch With Big River Drilling

Tell us about the property or what your well is doing, and we will set up a free estimate. For a well or pump problem, call or text (559) 867-3806, day or night.

  • (559) 867-3806
  • Riverdale, CA · serving Fresno, Kings and Tulare counties and out to Kern, Madera and Merced, about 60 to 70 miles around Riverdale
  • Free estimates · new wells, pump repair, pressure tanks and water lines

Get a Free Estimate

Tell us about the well or the water problem. We come out, look at the site and give you a free estimate.

Call (559) 867-3806