Assistant Limnologist

The Metropolitan Water District of Southern California
La Verne, CA 91750
  • Job Code
The Assistant Limnologists primary duties will be assisting with sampling and monitoring of source waters to meet compliance regulations and collecting data that will be used to make source wate...

The Assistant Limnologists primary duties will be assisting with sampling and monitoring of source waters to meet compliance regulations and collecting data that will be used to make source water management decisions. The source water storage and conveyance facilities include Lake Mathews, Skinner, Castaic, Silverwood, Havasu, Diamond Valley and Perris, as well as, Etiwanda and Live Oak Reservoirs, and all of the interconnecting aqueduct systems. This position will assist in evaluating taste and odor events, conducting copper treatments, sample collection and analysis, and report preparation. High reliance on SCUBA for monitoring and inspection of lakes for water quality purposes is a necessity.

This position requires a wide variety of skills for monitoring and sampling Metropolitans source water conveyance and storage system, including the use of a variety of hand-held and automated sampling and electronic monitoring devices. The successful candidate for this position must be qualified to perform SCUBA diving for sampling, observation and measurements, and must be able to perform delicate manipulations under water without disruptions to sediments. Fundamental skills include towing, launching and driving a boat, the latter with divers in the water. Much of the work is conducted under adverse conditions outdoors, in and around water, with a frequent requirement to lift containers of water or equipment weighing up to 50 pounds.

The Assistant Limnologist position is located in Metropolitans Water Quality Section within the Water Systems Operations Group at the Weymouth Water Treatment Plant in La Verne, California.

Work Schedule: 9/80, Monday through Friday with alternating Fridays off

This job announcement has been designed to indicate the general nature and level of work being performed by employees in this classification / job.

To view the full job description click here: Assistant Limnologist


Education and Experience: Bachelors degree from an accredited college or university in a related field.

A Degree in a related field is defined as a degree in Biology, Natural Resources, Aquatic Sciences or Environmental Sciences.


Employees in this position may be required to obtain and maintain the following certifications, licensing and registrations:

Diving positions require:
Rescue Diver Certification (Required at time of application)

CPR/First Aid/AED (Required at time of application)
Oxygen Provider Certification

Valid California Class C Driver license or equivalent that allows you to drive in the course of your employment is required at time of application.
May be required to be a licensed/certified SCUBA Diver.

Diving requirements for this position are set forth in the MWD Diver Safety Manual, Section 2.C, as shown below.

Water Quality Scientific Divers
To qualify for a position as a Scientific Diver, candidates must have logged at least 75 verifiable dives (required within 6 months from date of hire). These dives can be a combination of working dives, recreational dives, and training dives, but must be listed in a signed recreational, commercial or scientific official logbook.

In addition, candidates must have the following certifications:
Rescue Diver
Current CPR/First Aid certification

The above requirements can be obtained from any nationally-recognized agency such as National Association of Underwater Instructors (NAUI), SCUBA Diving International (SDI), SCUBA Schools International (SSI), or Professional Association of Diving Instructors (PADI), or the American Heart Association.

Skills and Knowledge
To qualify as a Scientific Diver, candidates must demonstrate that through training and experience they have gained sufficient skills and knowledge of:
Diving procedures and techniques
Emergency procedures
Physiological hazards as they relate to diving and diving equipment
Open Circuit SCUBA

40% Technical Skills and Knowledge:
o Perform maintenance and calibration on field sampling and monitoring equipment.
o Maintain and trouble-shoot mechanical devices operated by the team.
o Identify aquatic organisms such as algae, invertebrates and vertebrates.
o Conduct selected chemical analyses.
o Proficient use of MS Word, Excel and database software.
o Perform basic statistical analyses on water quality data in order to produce standard reports.
o Participate in SCUBA diving operations.
20% Job Preparation (education, experience & training relevant to the position)
20% Analytical Skills
10% Oral Communication Skills
05% Written Communication Skills
05% Teamwork/Interpersonal Skills
100% Total

Competitive compensation
Excellent medical, dental, life, vision plans.
Deferred compensation in the form of a 401(k) plan (with matching contribution) and a 457 plan.
Retirement benefits under the California Public Employees' Retirement System
Tuition reimbursement
Training and advancement opportunities
Excellent working environment

For more information on MWD benefits, please use the following link: Benefits Regular Full Time Employee

The Metropolitan Water District of Southern California is a consortium of 26 cities and water districts that provides drinking water to nearly 19 million people in Southern California. Metropolitans mission is to provide its service area with adequate and reliable supplies of high quality water to meet current and future needs in an environmentally and economically responsible way. Metropolitans facilities include the 242-mile Colorado River Aqueduct, five water treatment plants with a combined capacity of 2.3 billion gallons per day, nine surface water reservoirs, 800 miles of pipeline, and 16 hydroelectric power plants.

The Metropolitan Water District of Southern California is committed to providing reasonable accommodations to qualified individuals with disabilities. Qualified individuals with disabilities, who need a reasonable accommodation during the application or selection process, please call (213) 217-7738 or email:

MWD is a Federal and State EO employer Veterans/Disabled and other protected categories.

Application Filing Period: Closes at 4:30 pm PST on the date stated in the job announcement. However it may close prior to the filing end date if sufficient applications have been received. If sufficient applications have not been received, then the filing period end date may be extended.

Sponsorship: Applicants for employment with The Metropolitan Water District of Southern California must have work authorization that does not now or in the future require sponsorship of a visa for employment authorization in the United States (i.e., H1-B or other employment-based immigration case).

The Metropolitan Water District of Southern California

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Assistant Limnologist

The Metropolitan Water District of Southern California
La Verne, CA 91750

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