• 22 S. State St. Clearfield, UT 84015
  • Main : (801) 525-5000
  • M-F 8am to 5pm


Environmental Health Water Laboratory

The Environmental Health Laboratory allows the division’s environmental health scientist to rapidly assess public drinking water, swimming pools, and recreational waters to determine levels of contamination and possible risks to the community at-large.  

Davis County Environmental Health Laboratory is certified under the State of Utah Environmental Laboratory Certification Program (ELCP). All environmental laboratories performing testing or analysis of Drinking/Potable Water, Non-Potable Water (Wastewater), and/or Solid and Chemical Materials for compliance in the State of Utah must be accredited by this program. The State of Utah is a NELAP (National Environmental Laboratory Accreditation Program) recognized Accreditation Body, currently assessing to the 2009 TNI Standard.

Fee Schedule

Drinking Water Sample Fee  $12
Well (private) Sample Fee  $12
Heterotrophic Plate Count (HPC) $12

Analytical Testing

Under the ELAP certificate the laboratory is certified to conduct three types of analytical test:

  • Standard Method #9215B Heterotrophic Plate Count (pour plate method) is a procedure for estimating the number of live culturable heterotrophic bacteria in water.
  • Standard Method #9223B Enzyme Substrate Coliform Test (Total Coliform Bacteria) is recommended for the analysis of drinking and source water samples to detect total coliform bacteria and Escherichia coli.
  • Standard Method #4500‾F C Fluoride (Ion-Selective Electrode Method) is used to determine that optimal fluoride levels are maintained as a public health measure. 

Laboratory Methods

All laboratory methods follow the Standard Methods 22nd edition for the Examination of Water and Wastewater. This is a standard reference text used in water plants and laboratories worldwide for testing all aspects of water quality. It contains hundreds of USEPA-approved laboratory procedures and represents the best current practice of water and wastewater analysis. It is published jointly by the American Public Health Association, Water Environment Federation, and American Water Works Association.            

Quality Assurance

The Laboratory has a quality assurance program that follows an orderly application of the practices necessary to remove or reduce errors that may occur in any laboratory operation, caused by personnel, equipment, supplies, sampling procedures and analytical methodology. The policies and procedures included in this program are used to review all phases of testing performed within the Laboratory to ensure a high level of quality.

Contact Information

Physical Address
22 South State Street
2nd Floor
Clearfield, Utah 84015

Mailing Address
Davis County Health Department
Environmental Health Services Division
P.O. Box 618
Farmington, Utah 84025

Phone Numbers
(801) 525-5100 :: Main
(801) 525-5119 :: Fax

Monday – Friday
8:00 a.m. to 5:00 p.m. (except county holidays)

Copyright © Davis County Government. All Rights Reserved

New Year's Day

Wednesday, Jan 01

Martin Luther King Jr. Birthday

Monday, Jan 20

President's Day

Monday, Feb 17

Memorial Day

Monday, May 25

Independence Day (Observed)

Friday, Jul 03

Pioneer Day

Friday, Jul 24

Labor Day

Monday, Sep 07

Veterans' Day

Wednesday, Nov 11


Thursday, Nov 26 & Friday, Nov 27

Christmas Eve

Thursday, Dec 24

Christmas Day

Friday, Dec 25

New Years Eve (Close at 12:00pm)

Thursday, Dec 31