Utah DHHS, Utah Public Health Laboratory
Utah environmental lab certification, R444-14 and the TNI standard.
Who certifies your lab in Utah, which standard you are assessed against, how NELAP-accredited and out-of-state labs are recognized, and what auditors look for in your initial calibrations.
At a glance
How environmental lab certification works in Utah.
Utah is a NELAP accreditation body. One program at the Utah Public Health Laboratory certifies labs that analyze samples for compliance under the Safe Drinking Water Act, the Clean Water Act and the Resource Conservation and Recovery Act.
NELAP accreditation body
- Program
- Environmental Laboratory Certification, run from the Utah Public Health Laboratory. The program states it establishes and enforces standards for labs providing compliance testing results to the Utah Department of Environmental Quality.
- NELAP status
- Listed by TNI as a NELAP accreditation body (UT Department of Health and Human Services), accrediting to the 2016 TNI Environmental Laboratory Sector Standard, as of October 2026.
- Legal basis
- Utah Admin. Code R444-14, Rule for the Certification of Environmental Laboratories, authorized by Section 26-1-30. Sections R444-14-1 through R444-14-7 were last amended effective June 11, 2021.
- Quality system standard
- Volume 1 of the TNI Standard effective January 30, 2019, incorporated by reference. R444-14-6 requires certified labs to adhere to Volume 1 Modules 2, 3, 4, 5, 6 and 7, and R444-14-5 applies Module 1 for proficiency testing.
- Who needs it
- Labs that analyze samples for compliance with rules of the Department of Environmental Quality, Department of Health and Department of Agriculture that require a certified lab, including labs doing that work under subcontract to another lab (R444-14-1).
- Approval by analyte and method
- A certified lab must also obtain approval for each analyte analyzed by a specific method. Approvable methods include 40 CFR Parts 141, 142 and 143; 136 and 503.8; 260 and 261; or another method required by the lab’s client (R444-14-4).
- NELAP and out-of-state labs
- The program may certify a lab that is NELAP accredited, on evidence of that accreditation and with approval for each analyte (R444-14-7). The program’s application form offers secondary NELAP accreditation to out-of-state labs.
The accreditation cycle
From application to renewal.
The steps below summarize R444-14 and the program’s application form (ELCP 003, Revision 2, April 2018). Your certificate and program correspondence govern the specifics for your lab.
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Apply by analyte and method
Apply through the program with the method and analyte selection tables, quality manual, and analytical and administrative SOPs. Each analyte is approved by a specific method (R444-14-1 and R444-14-4).
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Proficiency testing
Meet the proficiency testing requirements of TNI Volume 1 Module 1, at the lab’s own expense, to become and stay approved for each analyte by method (R444-14-5).
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On-site assessment
State certification officers conduct an on-site survey. The application form states that a lab holding Utah NELAP accreditation should expect an onsite assessment every two years.
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Annual renewal
The application form states that renewal applications are submitted annually. Between renewals, labs notify the program within 30 calendar days of changes relevant to certification (R444-14-3).
Initial calibration
What auditors check in your initial calibrations.
Utah has no separate calibration rule. R444-14 adopts the TNI standard’s quality system modules and ties each approval to a specific method, so calibration expectations come from TNI Volume 1 and the methods you are approved for.
A range that brackets what you report
The lowest standard should sit at or below your reporting limit and the highest at or above the top concentration you report. Results outside the calibrated range need to be qualified.
Error at the low end, not r² alone
A correlation coefficient of 0.999 can still hide a low standard that back-calculates 30 percent off. Auditors look at relative error, especially at the lowest levels.
Records that rebuild the curve
Raw responses, the model and weighting used, any excluded points with the reason, and the verification that followed. An auditor should be able to reconstruct every initial calibration from the record.
The method on your report, under the TNI modules
For SDWA, CWA and RCRA compliance samples, R444-14-4 requires a certified lab to follow the method it indicates on its final report, and R444-14-6 requires adherence to TNI Volume 1 Modules 2 through 7. An assessor reads your curve against both.
Source: Utah Admin. Code R444-14-4 and R444-14-6; TNI Standard Volume 1 (effective January 30, 2019)
Approval is granted analyte by analyte for a specific method, drawn from 40 CFR Parts 141 to 143, 136 and 503.8, 260 and 261, or a client-required method. The calibration criteria in each of those methods still apply.
Self-check
Are your initial calibrations ready for a Utah assessment?
Tick what your lab could show an auditor today. Nothing you select is saved or sent anywhere.
6Checks to work through
Select each item your lab could show an auditor today.
A self-assessment to help you prepare, not a compliance determination.
Utah specifics
One rule covers drinking water, wastewater and RCRA.
Many states split drinking water certification from wastewater and hazardous waste programs. Utah does not. R444-14 applies to labs analyzing samples for compliance with the Safe Drinking Water Act, the Clean Water Act and the Resource Conservation and Recovery Act, and the program posts method selection lists for drinking water, non-potable water, solid and chemical materials, and air and emissions.
Utah is also a NELAP accreditation body. Under R444-14-7 the program may certify a lab on the basis of NELAP accreditation, but that lab still needs program approval for each analyte, and the program may request more information to confirm compliance. The application form offers secondary NELAP accreditation to out-of-state labs.
We found no amendment to R444-14 in 2025 or 2026. The sections were last amended effective June 11, 2021, and the Justia copy of the code is current through June 15, 2025. The application form posted by the program is dated April 2018 and refers to the 2009 TNI Standard, while the rule now incorporates the TNI Standard effective January 30, 2019, so confirm current forms with the program.
How WLTR helps
Calibration evidence ready for a Utah assessment.
WLTR independently reviews the calibration your instrument software produced. Your analyst still makes the final call. What changes is that the evidence is complete, consistent across analysts, and ready before the auditor asks for it.
- Each analyte reviewed one at a time in the instrument software.
- The model and weighting are whatever the batch was processed with.
- r² is the number most people look at, even though it does not measure error at the low end.
- QA signs off without an independent check on the curve.
- Every analyte and every candidate model side by side in the Calibration Intelligence dashboard.
- Diagnostics run automatically and the best fit curve is identified, with the reasons recorded.
- Relative error at every level, including the lowest standard, shown on one screen.
- A traceable record your QA manager can review, sign and hand to a Utah certification officer.
See how your own ICAL data looks when every analyte and model is laid out for review.
Questions
Utah accreditation FAQs
Is Utah a NELAP state?
Yes. TNI lists the UT Department of Health and Human Services as a NELAP accreditation body, accrediting to the 2016 TNI Environmental Laboratory Sector Standard, as of October 2026.
Who certifies environmental labs in Utah?
The Environmental Laboratory Certification program at the Utah Public Health Laboratory, part of the Utah Department of Health and Human Services, under Utah Admin. Code R444-14.
Which labs must be certified?
Labs that analyze samples for compliance with Department of Environmental Quality, Department of Health and Department of Agriculture rules that require a certified lab, including subcontract labs. Approval is also needed for each analyte by a specific method.
Can an out-of-state or NELAP-accredited lab be certified in Utah?
Yes. R444-14-7 allows the program to certify a NELAP-accredited lab on evidence of its accreditation, with approval for each analyte. The program’s application form offers secondary NELAP accreditation to out-of-state labs.
Does Utah have its own initial calibration rule?
No separate rule. R444-14-6 adopts TNI Volume 1 Modules 2 through 7, and R444-14-4 requires labs doing SDWA, CWA or RCRA compliance work to follow the method named on the final report, so calibration criteria come from TNI and the approved method.
Sources
Primary sources for this page.
- TNI, NELAP recognized accreditation bodies (opens in a new tab)
- Utah Public Health Laboratory, Environmental Laboratory Certification (opens in a new tab)
- Utah application for environmental laboratory accreditation (ELCP 003) (opens in a new tab)
- Utah Admin. Code R444-14 (Cornell LII, secondary copy) (opens in a new tab)
- R444-14-1, introduction (Justia, secondary copy) (opens in a new tab)
- R444-14-4, analytical methods (Justia, secondary copy) (opens in a new tab)
- R444-14-6, quality system (Cornell LII, secondary copy) (opens in a new tab)
- R444-14-7, recognition of NELAP accreditation (Cornell LII, secondary copy) (opens in a new tab)
This page summarizes public program information to help labs prepare. Requirements change, and the agency’s current rules and guidance always take precedence. WLTR is not affiliated with or endorsed by the Utah Department of Health and Human Services. Spot something out of date? Tell us at admin@wltr.tech.
Before your next assessment
See your Utah ICALs the way an assessor will.
Bring a recent initial calibration. We will walk you through every analyte and candidate model in the Calibration Intelligence dashboard, the best fit, and the record your QA manager would sign.
Request a demoHow the methodology works
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