Drinking water quality · 2024
· Verified
What's in Calvert Manor, MD tap water
25 contaminants were measured in the Calvert Manor, MD water system's 2024 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 2024
- Contaminants measured
- 25
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- Copper
- Service area
- MD
Where your water comes from · EPA SDWIS
Calvert Manor, MD's drinking water comes from ground water, drawn from 2 sources.
Source
- CALVERT MANOR 2 PG670013
- CALVERT MANOR 1 (NEW) PG941402
Treatment
- WTP WELLS 2 + 3
Distribution
Historical readings · EPA Six-Year Review (2012–2019)
9 historically-detected contaminants in Calvert Manor, MD
Every U.S. public water system reports compliance-monitoring data to EPA. The Six-Year Review releases the 2012–2019 window as a single dataset — here's what your system reported, year by year. Values shown are the highest detection per analyte per year, compared to the federal MCL.
| Contaminant | Worst detection | EPA limit | Years (2012–2019) |
|---|---|---|---|
FLUORIDE worst: 2015 | 1.17 mg/L within | 4 mg/L | '12'15'18 |
NITRATE worst: 2012 | 1 mg/L within | 10 mg/L | '12 |
TTHM worst: 2014 | 0.0036 mg/L within | 0.08 mg/L | '13'14'16'17 |
HAA5 worst: 2013 | 0.00052 mg/L within | 0.06 mg/L | '13 |
BARIUM worst: 2015 | 0.014 mg/L within below national p90 | 2 mg/L | '15 |
TCAA worst: 2013 | 0.00052 mg/L | — | '13 |
BROMODICHLOROMETHANE worst: 2013 | 0.00105 mg/L | — | '13'14'16 |
CHLOROFORM worst: 2013 | 0.00187 mg/L | — | '13'14'16 |
DIBROMOCHLOROMETHANE worst: 2016 | 0.00056 mg/L | — | '16 |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.2290th percentileAt the tap | 0.135MCLG | At or above the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 0 mg/L90th percentileAt the tap | 0.0008 mg/LMCLG | None detected |
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid, a chlorinated PFAS compound. | Not detectedReported levelCalvert Manor 1 (New) Pg941402 | None set | None detected |
+By source (2)— Calvert Manor 1 (New) Pg941402, Calvert Manor 2 Pg670013
| |||
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)ADONA, a newer-generation PFAS replacement compound. | Not detectedReported levelCalvert Manor 1 (New) Pg941402 | None set | None detected |
+By source (2)— Calvert Manor 1 (New) Pg941402, Calvert Manor 2 Pg670013
| |||
| 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid, a chlorinated PFAS compound. | Not detectedReported levelCalvert Manor 2 Pg670013 | None set | None detected |
+By source (2)— Calvert Manor 2 Pg670013, Calvert Manor 1 (New) Pg941402
| |||
| Hexafluoropropylene oxide dimer acidHFPO-DA ('GenX chemicals'), a newer-generation PFAS replacement compound. | Not detectedReported levelCalvert Manor 1 (New) Pg941402 | None set | None detected |
+By source (2)— Calvert Manor 1 (New) Pg941402, Calvert Manor 2 Pg670013
| |||
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)N-ethyl perfluorooctanesulfonamidoacetic acid, a PFAS-related compound. | Not detectedReported levelCalvert Manor 1 (New) Pg941402 | None set | None detected |
+By source (2)— Calvert Manor 1 (New) Pg941402, Calvert Manor 2 Pg670013
| |||
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)N-methyl perfluorooctanesulfonamidoacetic acid, a PFAS-related compound. | Not detectedReported levelCalvert Manor 1 (New) Pg941402 | None set | None detected |
+By source (2)— Calvert Manor 1 (New) Pg941402, Calvert Manor 2 Pg670013
| |||
| Perfluorobutanesulfonic acidPerfluorobutanesulfonic acid, a shorter-chain PFAS 'forever chemical.' | Not detectedReported levelCalvert Manor 2 Pg670013 | None set | None detected |
+By source (2)— Calvert Manor 2 Pg670013, Calvert Manor 1 (New) Pg941402
| |||
| Perfluorodecanoic acid (PFDA)Perfluorodecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detectedReported levelCalvert Manor 2 Pg670013 | None set | None detected |
+By source (2)— Calvert Manor 2 Pg670013, Calvert Manor 1 (New) Pg941402
| |||
| Perfluorododecanoic acid (PFDoA)Perfluorododecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detectedReported levelCalvert Manor 2 Pg670013 | None set | None detected |
+By source (2)— Calvert Manor 2 Pg670013, Calvert Manor 1 (New) Pg941402
| |||
| Perfluoroheptanoic acidPerfluoroheptanoic acid, a PFAS 'forever chemical.' | Not detectedReported levelCalvert Manor 2 Pg670013 | None set | None detected |
+By source (2)— Calvert Manor 2 Pg670013, Calvert Manor 1 (New) Pg941402
| |||
| Perfluorohexanesulfonic acidPerfluorohexanesulfonic acid, a PFAS 'forever chemical.' | Not detectedReported levelCalvert Manor 1 (New) Pg941402 | None set | None detected |
+By source (2)— Calvert Manor 1 (New) Pg941402, Calvert Manor 2 Pg670013
| |||
| Perfluorohexanoic acidPerfluorohexanoic acid, a shorter-chain PFAS 'forever chemical.' | Not detectedReported levelCalvert Manor 1 (New) Pg941402 | None set | None detected |
+By source (2)— Calvert Manor 1 (New) Pg941402, Calvert Manor 2 Pg670013
| |||
| Perfluorononanoic acidPerfluorononanoic acid, a PFAS 'forever chemical.' | Not detectedReported levelCalvert Manor 2 Pg670013 | None set | None detected |
+By source (2)— Calvert Manor 2 Pg670013, Calvert Manor 1 (New) Pg941402
| |||
| Perfluorotetradecanoic acid (PFTeDA)Perfluorotetradecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detectedReported levelCalvert Manor 2 Pg670013 | None set | None detected |
+By source (2)— Calvert Manor 2 Pg670013, Calvert Manor 1 (New) Pg941402
| |||
| Perfluorotridecanoic acid (PFTrDA)Perfluorotridecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detectedReported levelCalvert Manor 2 Pg670013 | None set | None detected |
+By source (2)— Calvert Manor 2 Pg670013, Calvert Manor 1 (New) Pg941402
| |||
| Perfluoroundecanoic acid (PFUnA)Perfluoroundecanoic acid, a longer-chain PFAS 'forever chemical.' | Not detectedReported levelCalvert Manor 1 (New) Pg941402 | None set | None detected |
+By source (2)— Calvert Manor 1 (New) Pg941402, Calvert Manor 2 Pg670013
| |||
| PFOAPerfluorooctanoic acid, a PFAS 'forever chemical' once used in nonstick and stain-resistant products. | Not detectedReported levelCalvert Manor 2 Pg670013 | None set | None detected |
+By source (2)— Calvert Manor 2 Pg670013, Calvert Manor 1 (New) Pg941402
| |||
| PFOSPerfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. | Not detectedReported levelCalvert Manor 1 (New) Pg941402 | None set | None detected |
+By source (2)— Calvert Manor 1 (New) Pg941402, Calvert Manor 2 Pg670013
| |||
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 0.5 mg/LReported levelSystem-wide | None set | Detected — no federal limit |
People also ask about Calvert Manor, MD's water
+Is Calvert Manor, MD tap water safe to drink in 2024?
The 2024 Consumer Confidence Report for the Calvert Manor, MD water utility lists 1 contaminant at or above the federal limit: Copper. 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 Calvert Manor, MD tap water?
25 contaminants were measured in Calvert Manor, MD's 2024 Consumer Confidence Report, spanning pfas ("forever chemicals"), metals, and disinfection byproducts. 4 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 Calvert Manor, MD tap water?
One contaminant in Calvert Manor, MD's 2024 report sits at or above the federal limit: Copper (1.6× 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 Calvert Manor, MD tap water?
The contaminant with the highest measured value relative to its federal limit in the 2024 report is Copper, at 1.6× 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 Calvert Manor, MD's 2024 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 Calvert Manor, 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 2024 report; a new report will replace it once the utility publishes its next annual update.