John Jansen
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John Jansen Email & Phone Number

Principal Geophysicist and Hydrogeologist at Collier Consulting, Inc.
Location: Cedarburg, Wisconsin, United States 15 work roles 3 schools
1 work email found @collierconsulting.com LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

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Work email j****@collierconsulting.com
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Current company
Role
Principal Geophysicist and Hydrogeologist
Location
Cedarburg, Wisconsin, United States
Company size

Who is John Jansen? Overview

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Quick answer

John Jansen is listed as Principal Geophysicist and Hydrogeologist at Collier Consulting, Inc., a with 83 employees, based in Cedarburg, Wisconsin, United States. AeroLeads shows a work email signal at collierconsulting.com and a matched LinkedIn profile for John Jansen.

John Jansen previously worked as Principal Geophysicist/Hydrogeologist at Collier Consulting, Inc. and Principal Technical Specialist - Water at Leggette, Brashears & Graham, Inc.. John Jansen holds Ph.D, Geological Sciences; Specialties In Geophysics from University Of Wisconsin-Milwaukee.

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Email format at Collier Consulting, Inc.

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{first}@collierconsulting.com
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Profile bio

About John Jansen

Specialties: Business development, groundwater exploration, surface and borehole geophysics, ASR, brackish water resources, enhanced recharge, injection wells, aquifer testing, ground water modeling, drilling technology, well design, expert witness testimony, well rehabilitation

Listed skills include Hydrogeology, Groundwater, Water Resources, Groundwater Modeling, and 24 others.

Current workplace

John Jansen's current company

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Collier Consulting, Inc.
Collier Consulting, Inc.
Principal Geophysicist and Hydrogeologist
Cedarburg, WI, US
Employees
83
AeroLeads page
15 roles · 18 years

John Jansen work experience

A career timeline built from the work history available for this profile.

Principal Geophysicist/Hydrogeologist

Current

West Bend, Wi

Providing groundwater resource management, engineering and groundwater geophysics, high resolution 2D and 3D seismic reflection surveys and interpretation, mine hydrogeology, and groundwater modeling services around the US.

Jan 2018 - Present

Principal Technical Specialist - Water

Cedarburg, Wi

Groundwater resource management. Geophysics, well siting, pumping tests, alternative energy, water use permitting, groundwater modeling, salt water intrusion and brackish water resources.

Jan 2014 - Jan 2018

Senior Managing Hydrogeologist

Well siting, aquifer performance tests, groundwater modeling, water permitting, EIS, and geophysics for water supply, mining, solar power, oil and gas, and compressed air energy storage projects acroos the country and internationally.

Aug 2009 - Jan 2014

Principal/Hydrogeologist

Cardno Entrix

Same position

2009 - 2011 ~2 yrs

Senior Geoscientist And Principal

Aquifer Science & Technology, Div Of Ruekert & Mielke, Inc

Founder and leader of a group of four hydrogeologists and geophysicists conducting a variety of water resource, mining, expert witness, alternative energy, and engineering geophysics projects in the midwestern and southwestern United States. Responsible for business development, strategic planning, technical oversight, and staff management.

Sep 1998 - Aug 2009

Chief Geoscientist

Layne Geosciences, Inc

Kansas City, Missouri Area

Responsible for technical oversight and staff development for the technical support group for the world's largest non-petroleum drilling company. Trouble shooter for over forty-five drilling offices nation-wide. Managed a variety of water supply and environmental projects around the country and internationally.

Jun 1996 - Aug 1998

Vice President And Principal Geoscientist

Ted Zorich Andassociates, Inc

Greater Denver Area

Lead Geoscientist and partner for a small water rights company managing a variety of ground water resource development and ground water modeling projects in the Midwest

Oct 1994 - Jun 1996

Director Of

Northern Environmental Technologies, Inc

Following the sale of GeEx, assumed responsibility for directing a remedial investigations group, and started up ground water supply, ground water modeling, and geophysics groups. Managed a staff of ten professionals.

May 1992 - Sep 1994

President

Geex

small but innovative exploration geophysics company specializing in ground water exploration and environmental geophysical investigations. Sold company to Northern

Jul 1988 - May 1992

Chief Geophysicist

Greater Milwaukee Area

Founded a consulting group for Layne Northwest that grew into a national consulting group. Directed technical staff of eight. Managed approximately 80 projects involving engineering geophysics, ground water modeling, aquifer testing, and drilling projects for ground water exploration, environmental, and construction dewatering applications.

Jul 1985 - Jul 1988

Exploration Geophysicist

Union Oil Company

Casper, Wyoming Area

interpreter responsible for prospect generation in the Wind River Basin.

Oct 1983 - Jul 1985

Assistant Geophysicist

Union Oil Company

in petroleum exploration assisting with exploration projects in the

Jun 1982 - Aug 1982

Assistant Geophysicist

Casper, Wyoming Area

in petroleum exploration assisting with exploration projects in the Red Sea and Aruba.

Jun 1981 - Aug 1981

Assistant Geologist

Layne Northwest Company

Assisted with numerous ground water exploration projects in Wisconsin.Professional Registrations and Associations

Oct 1979 - May 1981
Team & coworkers

Colleagues at Collier Consulting, Inc.

Other employees you can reach at collierconsulting.com. View company contacts for 83 employees →

3 education records

John Jansen education

Ph.D, Geological Sciences; Specialties In Geophysics

Hydrogeology. Dissertation Title: Ground Water Exploration in the Silurian dolomite aquifer of eastern Wisconsin through the combined use.

M.S. Degree; Specialties, Geological Sciences; Geophysics, Petroleum Geology And Hydrogeology

University Wisconsin-Milwaukee

Title: A Geophysical evaluation of a proposed landfill site in southeastern Wisconsin

FAQ

Frequently asked questions about John Jansen

Quick answers generated from the profile data available on this page.

What company does John Jansen work for?

John Jansen works for Collier Consulting, Inc..

What is John Jansen's role at Collier Consulting, Inc.?

John Jansen is listed as Principal Geophysicist and Hydrogeologist at Collier Consulting, Inc..

What is John Jansen's email address?

AeroLeads has found 1 work email signal at @collierconsulting.com for John Jansen at Collier Consulting, Inc..

Where is John Jansen based?

John Jansen is based in Cedarburg, Wisconsin, United States while working with Collier Consulting, Inc..

What companies has John Jansen worked for?

John Jansen has worked for Collier Consulting, Inc., Leggette, Brashears & Graham, Inc., Entrix, Inc., Cardno Entrix, and Aquifer Science & Technology, Div Of Ruekert & Mielke, Inc.

Who are John Jansen's colleagues at Collier Consulting, Inc.?

John Jansen's colleagues at Collier Consulting, Inc. include Jorgen Bergstrom, Luke Dowdy, Josh Morrison, Matt Van Hattem, and Gerry Kendall.

How can I contact John Jansen?

You can use AeroLeads to view verified contact signals for John Jansen at Collier Consulting, Inc., including work email, phone, and LinkedIn data when available.

What schools did John Jansen attend?

John Jansen holds Ph.D, Geological Sciences; Specialties In Geophysics from University Of Wisconsin-Milwaukee.

What skills is John Jansen known for?

John Jansen is listed with skills including Hydrogeology, Groundwater, Water Resources, Groundwater Modeling, Water, Geophysics, Water Quality, and Environmental Consulting.

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