Drinking water quality · 1992
· Verified
What's in City of Rockville, MD tap water
1 contaminants were measured in the City of Rockville, MD water system's 1992 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 1992
- Contaminants measured
- 1
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- Lead
- Service area
- MD
PFAS — EPA UCMR5 (2023–2025)
4 PFAS compounds detected in City of Rockville, MD
The EPA finalized the first-ever federal drinking-water limits for six PFAS compounds in April 2024. These numbers come straight from EPA's UCMR5 lab dataset — every U.S. system serving more than 3,300 people tested every PFAS sample at an entry point to its distribution system. PFAS not listed below were either tested and not detected, or not yet sampled.
PFBS
● Detected (no federal limit)PFPeA
● Detected (no federal limit)PFHxA
● Detected (no federal limit)PFBA
● Detected (no federal limit)Where your water comes from · EPA SDWIS
City of Rockville, MD's drinking water comes from surface water, drawn from 1 source.
Source
- POTOMAC RIVER
Treatment
- POTOMAC FILTER PLANT
Distribution
Also buys water from WASHINGTON SUBURBAN SANITARY COMMISSION.
Compliance history
Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.
- Maximum contaminant level exceededHealth-based1 violation on record · most recent Oct 2008resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 0.016 mg/L90th percentileAt the tap | 0.015 mg/LAction level | At or above the limit |
People also ask about City of Rockville, MD's water
+Is City of Rockville, MD tap water safe to drink in 1992?
The 1992 Consumer Confidence Report for the City of Rockville, MD water utility lists 1 contaminant at or above the federal limit: Lead. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in City of Rockville, MD tap water?
1 contaminants were measured in City of Rockville, MD's 1992 Consumer Confidence Report, spanning metals. 1 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Which contaminants exceed federal limits in City of Rockville, MD tap water?
One contaminant in City of Rockville, MD's 1992 report sits at or above the federal limit: Lead (1.1× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in City of Rockville, MD tap water?
The contaminant with the highest measured value relative to its federal limit in the 1992 report is Lead, at 1.1× the federal threshold. It belongs to the metals family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from City of Rockville, MD's 1992 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is City of Rockville, MD's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 1992 report; a new report will replace it once the utility publishes its next annual update.