California Well Permit Requirements 2026: Complete Guide

Navigating the well permit process in California requires understanding complex regulations, especially with the SGMA (Sustainable Groundwater Management Act) fully in effect. This comprehensive guide covers what you need to know about obtaining a well permit in California for 2026, focusing on San Diego Countypeculiarities and state-wide requirements. As regulations vary by county, this guide will provide a step-by-step approach to ensure compliance and streamline your permit application process.

Overview of California Well Permit Requirements

Obtaining a well permit in California involves several key steps and compliance checks that vary between counties but share common elements:

State-Level Regulations

• SGMA: Mandates sustainable management practices for all high and medium-priority groundwater basins.
• County Permit Requirements: Each of California's counties requires individual permit applications in accordance with local environmental health standards.

Understanding the SGMA Requirements

The SGMA significantly influences well drilling by controlling groundwater usage and sustainability in critically overdrafted basins:

• Permit Application: New wells need approval under SGMA, particularly in priority basins.
• Water metering: Required for compliance to prevent excess extraction.
• GSA Approval: Local agencies may impose additional restrictions based on groundwater conditions.

📋 In This Guide

• Do You Need a Well Permit in California?
• Types of Well Permits
• SGMA Requirements in 2026
• Permit Application Process
• County-by-County Requirements
• Permit Costs and Fees
• Setback Requirements
• Timeline Expectations
• When CEQA Review is Required
• Permits for Modifications and Repairs
• After Drilling: Completion Requirements
• San Diego County Specifics
• Frequently Asked Questions

California's well permitting requirements have evolved significantly over the past decade, driven primarily by SGMA implementation. What was once a straightforward county permit process may now involve multiple agencies, environmental reviews, and ongoing compliance requirements. Whether you're drilling a domestic well for your home or a larger agricultural or commercial well, understanding these requirements upfront prevents costly delays and ensures your well is legal and properly documented.

Do You Need a Well Permit in California?

Yes, all wells in California require permits. This includes:

• Domestic wells (single-family home use)
• Agricultural wells (irrigation, livestock)
• Commercial wells (business water supply)
• Industrial wells (manufacturing, processing)
• Monitoring wells (water level or quality testing)
• Cathodic protection wells (corrosion prevention)
• Geothermal wells (heat exchange systems)

There are no exemptions for small properties, rural locations, or minimal water use. Even replacing an existing well requires a permit in most circumstances.

Why Permits Matter

Drilling without a permit carries serious consequences:

• Fines: Up to $1,000 per day in some jurisdictions
• Forced destruction: Unpermitted wells may need to be destroyed at owner's expense
• Property sale issues: Unpermitted wells complicate or prevent property transactions
• No legal water rights: Unpermitted wells have no documented water rights
• Liability exposure: If contamination occurs, owner faces increased liability

Types of Well Permits

California well permits are categorized by use and may require different levels of review:

Domestic Well Permits

For single-family residential water supply:

• Processed through county environmental health department
• Typically the simplest permit category
• Usually requires site inspection and setback verification
• May require additional GSA approval in SGMA basins

Agricultural Well Permits

For farm irrigation or livestock water:

• Often face stricter SGMA scrutiny due to higher pumping volumes
• May require pumping capacity limits or metering
• Some basins have moratoriums on new agricultural wells
• May require hydrogeological assessment

Commercial/Industrial Well Permits

For businesses with significant water needs:

• Most complex permit category
• Often requires CEQA environmental review
• May need Regional Water Quality Control Board approval
• Public water supply wells have additional State Water Board requirements

Well Modification Permits

For changes to existing wells:

• Deepening existing wells typically requires permits
• New perforations or screen installation
• Some counties require permits for pump replacement
• Abandonment (destruction) always requires a permit

SGMA Requirements in 2026

The Sustainable Groundwater Management Act fundamentally changed well permitting in California. As of 2026, all high and medium priority groundwater basins are under active management by Groundwater Sustainability Agencies (GSAs).

Understanding SGMA Basin Classifications

High Priority Basins:

• Subject to strictest oversight
• 21 critically overdrafted basins must achieve sustainability by 2040
• New wells may face moratoriums, pumping limits, or offset requirements
• Metering often required

Medium Priority Basins:

• Active GSA management
• Must achieve sustainability by 2042
• New well permits reviewed by GSA
• May have allocation systems or fees

Low/Very Low Priority Basins:

• Not subject to SGMA management requirements
• Standard county permit process applies
• Status can change based on DWR assessments

What SGMA Means for Your Well Permit

In SGMA-managed basins, your well permit may require:

• GSA approval: In addition to county permit
• Well registration: Existing and new wells must be registered
• Metering: Flow meters on new wells, sometimes retrofitted to existing
• Pumping fees: Annual fees based on water extracted
• Extraction limits: Maximum gallons per year
• Offset requirements: May need to retire existing water rights or wells

Permit Application Process: Step by Step

Step 1: Preliminary Research

Before applying:

• Identify your county's environmental health department
• Determine if your property is in an SGMA basin
• Check zoning requirements for well installation
• Review setback requirements for your property

Step 2: Site Evaluation

• Measure distances from septic systems, property lines, structures
• Identify suitable drilling locations
• Consider access for drilling equipment
• For commercial/agricultural, may need hydrogeological report

Step 3: Application Submission

Typical application requirements:

• Completed permit application form
• Site plan showing proposed well location and setbacks
• Assessor's parcel number and property description
• Proposed well specifications (depth, diameter, construction)
• Licensed well contractor information (C-57 license required)
• Permit fee payment

Step 4: Review and Inspection

• County reviews application for completeness
• Site inspection may be required before approval
• GSA review if in SGMA basin (concurrent or sequential)
• Additional review if CEQA triggered

Step 5: Permit Issuance

• Permit valid for specific time period (often 1 year)
• Must be displayed at drill site
• Drilling must follow approved specifications
• Final inspection required upon completion

County-by-County Requirements in Southern California

Each California county has specific requirements. Here's what to expect in major Southern California counties:

San Diego County

• Permit Authority: Department of Environmental Health (DEH)
• Permit Fee: $464-$1,200+ depending on well type
• Timeline: 2-4 weeks for domestic, longer for commercial
• SGMA Basins: San Pasqual Valley is medium priority; most areas not SGMA-managed
• Special Requirements: Borrego Springs area has pumping restrictions

Riverside County

• Permit Authority: Department of Environmental Health
• Permit Fee: $390-$900+
• SGMA Basins: Multiple high/medium priority basins
• Special Requirements: Some areas require water purveyor approval

San Bernardino County

• Permit Authority: Land Use Services Department
• Permit Fee: $400-$1,000+
• SGMA Basins: Extensive coverage, many high-priority basins
• Special Requirements: Hydrogeological report often required

Los Angeles County

• Permit Authority: Department of Public Health
• Permit Fee: $500-$1,500+
• SGMA Basins: Most areas under adjudication or SGMA management
• Special Requirements: Many areas restrict new well drilling

Permit Costs and Fees (2026)

Well permit costs vary significantly based on location, well type, and regulatory requirements:

County Permit Fees

Fee Type	Typical Range
Basic domestic well permit	$250-$800
Agricultural well permit	$400-$1,200
Commercial well permit	$500-$1,500
Well modification permit	$200-$600
Well destruction permit	$150-$400
Inspection fees	$100-$300

Additional Potential Costs

Requirement	Cost Range
GSA application/review fee	$100-$2,000+
CEQA Initial Study	$500-$3,000
CEQA Negative Declaration	$2,000-$10,000+
Environmental Impact Report	$10,000-$100,000+
Hydrogeological report	$2,000-$10,000+
Water meter installation	$300-$1,500
Annual pumping fees (SGMA)	$10-$100+ per acre-foot

Setback Requirements

California wells must maintain minimum distances from potential contamination sources. Requirements vary by county but typically include:

Typical Minimum Setbacks

From	Minimum Distance
Septic tank	50-100 feet
Septic leach field	100-150 feet
Sewer lines	50 feet
Property lines	5-50 feet (varies)
Structures/buildings	5-10 feet
Animal enclosures	50-100 feet
Fuel storage tanks	50-100 feet
Drainage channels	50 feet

Note: Some counties have stricter requirements. San Diego County, for example, requires 100 feet from septic leach fields in some areas. Always verify with your local health department.

Timeline Expectations

Permit timelines vary widely based on location and project complexity:

Standard Domestic Well (Non-SGMA Area)

• Application to approval: 2-4 weeks
• Some counties offer expedited processing
• Incomplete applications cause delays

Domestic Well in SGMA Basin

• County permit: 2-4 weeks
• GSA review: Additional 2-8 weeks
• Total: 4-12 weeks

Agricultural/Commercial Wells

• Standard review: 4-8 weeks
• With GSA review: 8-16 weeks
• With CEQA: 3-18 months

Factors That Delay Permits

• Incomplete applications
• Missing site plans or incorrect setbacks
• Properties with environmental concerns
• CEQA triggers
• GSA backlogs in high-demand basins
• Public comment periods

When CEQA Review Is Required

The California Environmental Quality Act (CEQA) may apply to well permits, especially for larger projects:

Typically Exempt from CEQA

• Single-family domestic wells
• Replacement wells at same location
• Minor well modifications
• Small residential irrigation wells

May Require CEQA Review

• Large agricultural wells
• Commercial or industrial wells
• Wells in sensitive environmental areas
• Projects potentially affecting endangered species
• Wells near streams or wetlands
• Multiple wells for subdivision development

CEQA Review Levels

• Categorical Exemption: No CEQA review needed (most domestic wells)
• Initial Study: Basic environmental analysis ($500-$3,000)
• Negative Declaration: Finding of no significant impact ($2,000-$10,000)
• Mitigated Negative Declaration: With mitigation measures ($5,000-$25,000)
• Environmental Impact Report: Full study ($10,000-$100,000+)

Permits for Modifications and Repairs

Not all work on existing wells requires permits, but many modifications do:

Usually Requires Permit

• Deepening an existing well
• Adding new perforations or screens
• Changing well casing
• Converting well use (domestic to agricultural)
• Increasing pump capacity significantly
• Well destruction/abandonment

Usually Does NOT Require Permit

• Pump replacement (same capacity)
• Pressure tank replacement
• Routine maintenance
• Water quality treatment installation
• Electrical repairs

Note: Requirements vary by county. Some counties require permits even for pump replacement. Always check with your local health department.

After Drilling: Completion Requirements

The permit process doesn't end when drilling is complete:

Immediate Requirements

• Well Completion Report: Contractor files with Department of Water Resources within 60 days
• Final inspection: County inspection before use (most counties)
• Water testing: Required in some counties before occupancy

Ongoing Requirements (SGMA Basins)

• Well registration with GSA
• Meter installation and reading
• Annual extraction reporting
• Pumping fee payment

Documentation to Keep

• Well permit
• Well completion report
• Inspection records
• Water test results
• GSA registration (if applicable)

These documents are essential for property sales and should be kept permanently with your property records.

San Diego County Well Permits: Specific Requirements

For San Diego County property owners, here are the specific requirements:

Application Process

1. Submit application to Department of Environmental Health
2. Include site plan with setback measurements
3. Pay applicable fees ($464-$1,200+)
4. Schedule pre-drilling inspection if required
5. Receive permit (typically 2-4 weeks)

San Diego County Setbacks

• 100 feet from septic systems
• 50 feet from property lines
• Minimum 2-foot concrete surface seal
• Well casing extends 12 inches above grade

SGMA Considerations

San Diego County has limited SGMA-managed basins:

• San Pasqual Valley: Medium priority basin, GSA review required
• Borrego Valley: Critically overdrafted, strict pumping limits
• Most other areas: Not subject to SGMA

Local Contacts

• San Diego County DEH: (858) 505-6700
• Borrego Water District: For Borrego Springs area
• City of San Diego: For city properties (separate requirements)

Frequently Asked Questions

Related: San Diego County Well Permits

For San Diego-specific permit information, see our San Diego County well permit guide.