PERFLUORONONAOIC ACID (PFNA) cleanup levels in Pennsylvania
- PA DEP
- Act 2 Statewide Health Standards
- CAS 72007-68-2
- PFAS groundwater table updated 7/10/2024
For PERFLUORONONAOIC ACID (PFNA), DEP's PFAS groundwater table prints 0.01 µg/L for residential groundwater in a used aquifer with TDS up to 2500.
- 0.01µg/L R DEP's PFAS groundwater table Used Aquifers, TDS ≤ 2500
These are the Pennsylvania Department of Environmental Protection's published values for PERFLUORONONAOIC ACID (PFNA), from its PFAS groundwater table, updated 7/10/2024. Each value is shown as the agency prints it, with the same number written out beside it where that reads differently.
Pennsylvania: Statewide Health Standard Medium-Specific Concentrations
DEP's PFAS groundwater table
DEP's file dated July 24, 2024.
Pennsylvania Department of Environmental Protection
The United States Environmental Protection Agency (EPA) has established maximum contaminant levels (MCL) for the per- and polyfluoroalkyl substances (PFAS) compounds listed below. These MCLs will become the Statewide health standard medium-specific concentration (MSC) values for groundwater effective June 25, 2024. The new values are:
PERFLUORONONAOIC ACID (PFNA)*
| Column | Value | Code |
|---|---|---|
| R (µg/L) | 0.01 | M |
| NR (µg/L) | 0.01 | M |
| Column | Value | Code |
|---|---|---|
| R (µg/L) | 1 | M |
| NR (µg/L) | 1 | M |
| Column | Value | Code |
|---|---|---|
| R (µg/L) | 0.01 | M |
| NR (µg/L) | 0.01 | M |
Footnotes to DEP's PFAS groundwater table, as the agency prints them
* In addition to meeting the individual MSC, if more than one of the marked compounds (Gen-X, PFBS, PFHxS, PFNA) are detected at any concentration in a sample, a Hazard Index (HI) must be calculated using the equation below. The HI MSC is met in this case by maintaining a rolling average HI of less than one for the most recent four quarters of samples utilizing the equation:
HI = (CGen-X/0.01)+(CPFBS/2)+(CPFNA/0.01)+(CPFHxS/0.01)
Where: All concentrations are in µg/L
CGen-X = concentration of Gen-X
CPFBS = concentration of PFBS
CPFNA = concentration of PFNA
CPFHxS = concentration of PFHxS
Updated: 7/10/2024
Pennsylvania Department of Environmental Protection
PFAS Soil MSC Notice (January 2026)
PA DEP has determined that the Hazard Index portion of the EPA’s April 26, 2024 PFAS MCL Rule does not apply to soil. The rationale behind that decision is explained in the Technical Notice below.
The agency's current table governs. This page is a reference copy and not a cleanup decision. Check the agency's page for a newer table before relying on a value.
Source
- Pennsylvania Department of Environmental Protection, Statewide Health Standard Medium-Specific Concentrations.
- PFAS groundwater table: DEP's file dated July 24, 2024, read October 5, 2026.