Well Decommissioning Services in Chino, CA
Need to properly close an old, unused, or damaged well on your Chino property? Well decommissioning (also called well abandonment or well destruction) is required by California law to protect groundwater quality and ensure public safety.
📋 In This Guide
- Why Decommission a Well?
- Well Decommissioning Process
- San Bernardino County Regulations
- Cost of Well Decommissioning in Chino
- Related Articles
Southern California Well Service handles the entire decommissioning process for Chino property owners, including permits, proper sealing, and final documentation.
Why Decommission a Well?
- Legal Requirement: California law requires proper abandonment of unused wells
- Groundwater Protection: Open wells can contaminate aquifers
- Safety Hazard: Old wells pose falling risks for children and animals
- Property Sale: Real estate transactions often require well documentation
- New Construction: Building over an old well requires proper abandonment
Well Decommissioning Process
- Permit Application: We obtain required permits from San Bernardino County
- Well Assessment: Inspect well depth, casing condition, and construction
- Equipment Removal: Remove pump, piping, and electrical components
- Sealing: Fill well with approved grout/cement from bottom to top
- Surface Seal: Concrete cap installed below grade
- Documentation: File completion report with the county
San Bernardino County Regulations
San Bernardino County has specific requirements for well abandonment that must be followed precisely. As a licensed C-57 well drilling contractor, we ensure full compliance with:
- California Well Standards (Bulletin 74-90)
- San Bernardino County Department of Public Health, Division of Environmental Health Services (DEHS) requirements
- State Water Resources Control Board regulations
Cost of Well Decommissioning in Chino
Well decommissioning costs in Chino typically range from $1,500 to $5,000+ depending on:
- Well depth
- Casing diameter and condition
- Accessibility
- Amount of grout/cement required
We provide free estimates for all Chino well decommissioning projects.
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Our Locations
1077 Main St, Ramona, CA 92065
57174 CA-371 (US Hwy 79), Anza, CA 92539
Well Decommissioning in Chino, California
Chino, in the southwestern corner of San Bernardino County, was dairy and farm country for most of the twentieth century. The Chino Basin beneath it is one of the largest groundwater basins in Southern California, and for decades dairies, orchards, and homes pumped it through thousands of private wells. As the old Chino Agricultural Preserve has given way to master-planned communities like The Preserve, many of those legacy wells now sit beneath parcels being redeveloped. Under California law and San Bernardino County ordinance, an unused well must be properly decommissioned rather than abandoned in place.
Southern California Well Service is a licensed C-57 well contractor with offices in Ramona and Anza and founded in 2020, with 60+ years of family heritage across San Bernardino County. We decommission residential, dairy, and irrigation wells throughout the Chino area and handle the full county permit and reporting process. This guide covers when destruction is required, how the county process works, and how the well is sealed.
When Decommissioning Is Required
- Redevelopment of former dairy and farm land. The Chino Basin's agricultural legacy means many parcels carry old wells that must be destroyed before construction.
- Property sales. Lenders and title companies require documented destruction of abandoned wells.
- Replacement wells. A new well requires the old one to be decommissioned.
- Inactive wells. Under county ordinance, a well abandoned for 30 days without a declared plan for reuse must be destroyed.
- Contamination risk. Dairy and agricultural wells in the Chino Basin can carry nitrates and other contaminants into the groundwater if left open.
The San Bernardino County Permit Process
Chino well destruction is regulated by the San Bernardino County Department of Public Health, Division of Environmental Health Services (DEHS). A valid permit is required before any construction, reconstruction, or destruction of a well, and the work must be performed by a licensed C-57 contractor who is registered with the county. The destruction method must be submitted with the application and must conform to the standards in DWR Bulletin 74-81 and 74-90. We prepare and submit the application, the destruction method sheet, and the fee. After the county approves the method, we complete the work, coordinate inspection, and file the DWR destruction report to close the permit.
How the Well Is Destroyed to Bulletin 74 Standards
We follow DWR Bulletin 74-81 and 74-90, which San Bernardino County requires:
- Verify the well. Sound the borehole for total depth, casing diameter and material, and water level.
- Clear obstructions. Remove the pump, drop pipe, wiring, and debris.
- Disinfect. Chlorinate the well before sealing.
- Seal from the bottom up. Place neat cement or bentonite grout through a tremie pipe so the casing fills with no voids; pressure-grout the perforated zones common in dairy and irrigation wells.
- Restore the surface. Cut the casing below grade, set a concrete plug, and restore the ground.
Inspection, Documentation, and Timeline
San Bernardino County may witness the sealing or inspect the finished work. A typical residential Chino well is sealed in one day, while large dairy or irrigation wells take longer. Including permit processing, most projects run one to three weeks, with the destruction report provided for your records.
Costs in Chino
Most Chino projects run $1,500 to $5,000+. Large-diameter agricultural and dairy wells trend higher because of the grout volume required. County permit fees add $200 to $800, and our $125 diagnostic fee is credited toward the work.
Why a Licensed C-57 Contractor
San Bernardino County ordinance specifically requires that well destruction be performed by a licensed C-57 contractor registered with Environmental Health Services. In the Chino Basin, where nitrate contamination from decades of dairy operations is a documented concern, proper full-depth sealing is essential. We provide the equipment, the county registration, and the documentation that protects your property and the basin.
Serving Chino and the West Valley
We serve Chino including The Preserve and the former Agricultural Preserve, plus neighboring Chino Hills, Ontario, Montclair, and Eastvale. Call for a clear assessment of your well.
Get a Free Estimate
Call (760) 440-8520 or text (760) 219-5877 to schedule your Chino well decommissioning. founded in 2020, serving San Bernardino County, we handle the permit, the sealing, and the paperwork.
What Happens If You Don't Decommission an Old Well
An abandoned well is not a passive hole in the ground. It is an open vertical pathway that connects the surface directly to the aquifer, bypassing the natural soil layers that normally filter contaminants. In Chino, leaving a well unsealed creates several distinct problems. In the Chino Basin, documented nitrate contamination from decades of dairy operations makes proper sealing a community-wide concern. Surface runoff, fertilizer, fuel, and bacteria can travel straight down a corroded or open casing and degrade the groundwater that neighboring wells still draw from. Old wells also collapse over time, and a hidden, partially filled shaft is a genuine physical hazard to children, pets, livestock, and equipment. From a financial standpoint, an undocumented well is a recorded liability that can surface during a title search and stop a sale cold. Decommissioning resolves all of these at once: it removes the contamination pathway, eliminates the safety hazard, and produces a recorded document proving the well was properly retired.
A Closer Look at the Sealing Materials
The heart of a proper decommissioning is the sealant, and San Bernardino County follows the California Department of Water Resources standards for what may be used. The acceptable materials are neat cement grout (cement and water, sometimes with a small bentonite addition), sand-cement grout, and bentonite grout. Each has a place: neat cement is the workhorse for sealing the casing itself, while bentonite is often used where a flexible, low-permeability seal is preferred. The material must be placed by tremie pipe from the bottom of the well upward so that the grout displaces water and fills every foot of the bore without trapping voids or bridging partway down. Simply dumping dry sacks or concrete from the top is not compliant and is the most common reason a do-it-yourself "abandonment" fails inspection. Where a well is gravel-packed or has perforated sections, the grout is placed under pressure so it penetrates the annular space and the surrounding formation, not just the inside of the casing.
The San Bernardino County Environmental Health Services Permit, Step by Step
San Bernardino County has a firm rule that surprises many property owners: under the county well ordinance, if a well has been abandoned for 30 days and the owner has not declared it to Environmental Health Services for proposed reuse, the well must be destroyed. If the county finds that a well is a hazard likely to damage groundwater or threaten public health and safety, it can order the owner to destroy it within a stated period. The San Bernardino County Department of Public Health, Division of Environmental Health Services (DEHS) also requires that the destruction method be submitted on a separate sheet with the application and conform to the standards in DWR Bulletin 74-81 and 74-90. We handle all of that paperwork for Chino owners.
Once the permit is in hand, the field sequence is straightforward but exacting. We mobilize our rig to the wellhead, sound the well one more time to confirm conditions match the permit, pull the pump and any down-hole equipment, disinfect, and then grout from the bottom up. A county inspector may be present to witness the seal or may inspect the completed surface. When the work is done, we complete the Department of Water Resources Well Completion Report documenting the destruction, including the materials used and the volumes placed, and we file it with the county and the state. You receive copies for your permanent records, your insurance, and any future buyer's due diligence.
How to Prepare Your Chino Property
You can make the project faster and cheaper with a little preparation. Clear vegetation and stored items away from the wellhead so our equipment has a path. Locate any paperwork you have on the well, such as the original driller's report, the well's depth, or its construction details, which helps us size the job accurately. If the well is inside a pump house or under a structure, let us know during the diagnostic visit so we can plan access. If you are selling, start early; the permit and inspection cycle takes time, and rushing it during escrow adds stress. We are happy to coordinate directly with your real estate agent, escrow officer, or environmental consultant.
Serving Chino and Beyond
Southern California Well Service operates from two offices, at 1077 Main Street in Ramona and 57174 CA-371 (US Hwy 79) in Anza, which lets us reach Chino and the wider region efficiently. Since 2020, we have working San Bernardino County groundwater, and our crews carry the licensing, the grouting equipment, and the county relationships to handle decommissioning of any size, from a shallow domestic well to a deep, large-diameter agricultural bore. Beyond Chino, we regularly serve Chino Hills, Ontario, Montclair, Eastvale, and the West Valley. Whatever the situation that brought you here, whether a sale, a replacement, an inherited property, or a county notice, we can walk you through the options and give you a clear, written estimate.