PFAS ("forever chemicals") · 2024
Perfluorononanoic acid in Rockville, MD tap water
Rockville, MD's 2024 Perfluorononanoic acid measurement is below the federal limit of 10 ng/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Minimum System-wide | 0 ng/L | 10 ng/L MCL |
Maximum System-wide | 0.57 ng/L | 10 ng/L MCL |
Average System-wide | 0.27 ng/L | 10 ng/L MCL |
Verbatim from Rockville, MD's 2024 Consumer Confidence Report — source document ↗
About Perfluorononanoic acid
Perfluorononanoic acid, a PFAS 'forever chemical.'
Regulated by the EPA at 10 parts per trillion and included in the PFAS Hazard Index.
How Rockville, MD compares
3 of the 8 MD systems measuring Perfluorononanoic acid on The Water Map have it at or above the federal limit:
Nearby systems also reporting Perfluorononanoic acid:
People also ask
+Is there Perfluorononanoic acid in Rockville, MD tap water?
Yes — Rockville, MD's 2024 Consumer Confidence Report lists Perfluorononanoic acid at 0.27 ng/L. Rockville, MD's 2024 Perfluorononanoic acid measurement is below the federal limit of 10 ng/L (MCL).
+What's the federal limit for Perfluorononanoic acid in drinking water?
The federal MCL for Perfluorononanoic acid is 10 ng/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Perfluorononanoic acid?
Perfluorononanoic acid, a PFAS 'forever chemical.' Regulated by the EPA at 10 parts per trillion and included in the PFAS Hazard Index.
+Which other U.S. cities have Perfluorononanoic acid over the federal limit?
3 of the 8 MD systems on The Water Map measuring Perfluorononanoic acid report it at or above the federal limit. Examples include Backbone Mountain Boys Camp, MD, Cheltenham Youth Facility, MD, Town of Accident, MD.
+Where does this Perfluorononanoic acid measurement come from?
This page reproduces the Perfluorononanoic acid entry from the 2024 Consumer Confidence Report published by the Rockville, MD water utility — the annual drinking-water report every U.S. utility is required by federal law to publish. The original source document is archived at /water/md/rockville/2024/source.