Inside Clovis, city water comes from 37 wells and a treatment plant fed by the Kings River. Past the city limits, rural homes on the county land east and north of town rely on private wells. State records list 336 new domestic wells with a Clovis address since 2020, and nearly all sit outside the city. The area sits in the critically overdrafted Kings Subbasin, and Clovis-address households have filed 86 dry well reports.
Big River Drilling is a licensed C-57 well drilling contractor in Riverdale, and we bring water well drilling to Clovis. We drill new domestic wells with a mud rotary rig and finish them with the pump, tank and lines. Our pump crew handles well pump repair, pump replacement, pressure tanks and trenching for wells already in the ground. Call or text (559) 867-3806 for 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.
The City of Clovis serves the town and the unincorporated Tarpey Village area. In 2025, wells served about 67 percent of the system and a surface water plant served 33 percent. That plant opened in July 2004, when the city's wells could no longer keep up with growth. It lets the city turn off some wells part of the year so the water table can recover.
Five city wells carry treatment for DBCP, TCP or both. The city's water report describes DBCP as a banned pesticide from past use on vineyards and tree fruit. In Fresno County, private wells have no required water quality standards, so testing yours is up to you. A state-certified laboratory can run the test, and we can point you to one.
Clovis calls itself the Gateway to the Sierras, and its rural wells sit on the county land toward those foothills. Most of the 336 new Clovis-address wells since 2020 lie east of town, and most others lie to the north. About nine in ten sit inside the Kings Subbasin, on the valley floor below the foothills. USDA's 2024 cropland map shows that land east of town as mostly pasture and grassland, with citrus and almond orchards.
State records show Clovis-address domestic wells going deeper over time. Wells drilled before 1990 had a median depth near 125 feet, and wells from 1990 to 2009 near 205 feet. Since 2010 the median has held near 300 feet. Half of the wells since 2020 ran 300 to 350 feet.
Households filed 57 of the 86 dry well reports in 2021 and 2022, and the latest came in September 2026. Where a household listed its well depth, half were 138 feet deep or less. Most of those reported wells were shallower than the wells drilled today. Your estimate spells out the depth range, casing, seal, pump and tank, based on the well records nearby.
Up the hill, wells run much deeper. Since 2020, new domestic wells had median depths near 700 feet in Prather, 575 in Auberry and 420 in Tollhouse. Friant-address wells since 2020 ran deeper still, with a median near 755 feet. Most of those foothill wells sit outside the Kings Subbasin's mapped boundary.
The state lists the Kings Subbasin as critically overdrafted. Around Clovis, the North Kings Groundwater Sustainability Agency manages it under SGMA, the state groundwater law. Its members include the City of Clovis and Fresno County, and its plan aims for sustainability by 2040. On the way there, the GSA expects groundwater levels to keep falling before they level off.
Two GSA rules matter for a household well. Since May 2025, every well in its area must be registered, domestic wells included. A minimum well depth policy also sets depth standards for new wells, including domestic ones. The GSA tells households to ask their local driller how deep to drill.
Outside the city limits, Fresno County Environmental Health permits the well, and the GSA regulates how the water is used. The county inspects the annular seal, which must reach at least 20 feet down. In water year 2025, the GSA reviewed about 200 new well applications with the county. The county and the groundwater agency decide, and we handle the application as the licensed driller.
Some of the Clovis reports described low pressure, sand in the water or a well catching air. Those problems can start at the pump, the pressure switch, the tank or the well itself. Our pump crew tracks down the failed part first. We take well and pump calls 24 hours a day, seven days a week.
Pressure that comes and goes, or a pump that clicks on and off, can point to a waterlogged pressure tank. On rural parcels, the run from the well to the house can be long. We handle the trench and water line to the house, with the electrical conduit to the pump.
We come over from Riverdale on Highway 41 north through Fresno, then Highway 168 east into Clovis. Past Shepherd Avenue, Highway 168 becomes the two-lane Tollhouse Road and climbs toward Prather. The foothill homes up that road sit inside our working area too. Call or text (559) 867-3806 for a free estimate.
Communities and areas we serve around Clovis: Old Town Clovis, Loma Vista, Heritage Grove, Tarpey Village, Friant, Millerton, Prather, Auberry, Tollhouse, Humphreys Station.
Clovis ZIP codes served: 93611, 93612, 93619, 93626.
Free estimates throughout Fresno County and the surrounding area.
(559) 867-3806
New domestic water wells drilled by mud rotary, cased and sealed to the county's standards, developed and pump tested, then finished with the pump, the pressure tank and the lines to the house. Replacement wells when an old well goes dry or silts up.
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No water, low pressure or a pump that never shuts off? We trace the fault from the breaker down to the pump and repair what failed.
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We size and set submersible well pumps for new wells and replace worn pumps in existing wells. The drop pipe, wire, controls and the electrical to the pump come with the job.
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We install and replace bladder and galvanized well pressure tanks, plus the switches, gauges and check valves. When the pump clicks on and off, we find out why.
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Trenching from the well to the house, with the water line and the pump's power conduit in one trench. New lines for new wells, and repairs when an old line breaks or leaks.
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The well quit and the taps are dry. We take well and pump calls 24 hours a day, seven days a week.
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Irrigation and stock wells for farms, orchards, dairies and ranches around Riverdale. We drill by mud rotary, test pump the well and handle the permit paperwork.
Learn MoreReal reviews from real well and pump jobs, 9 reviews on Google.
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)
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
Great fokes to do business with
A few of the questions we hear most around Clovis. If yours is not here, call and ask.
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.
Tell us about the well or the water problem. We come out, look at the site and give you a free estimate.
