# Gramercy, MD — Drinking Water Quality (2024)

> Contaminant levels for the Gramercy, MD public water system from its 2024 Consumer Confidence Report, compared to federal limits.

- Page: https://www.thewatermap.com/water/md/gramercy/2024
- JSON API: https://www.thewatermap.com/api/water/md/gramercy/2024
- Source: the utility's annual Consumer Confidence Report (CCR)
- Verification: transcribed by a model, cross-checked by a second model, approved before publishing
- Reporting year: 2024
- Contaminants measured: 4
- Contaminants with a federal limit: 4
- Contaminants at or above the federal limit: 1
- Part of The Water Map — https://www.thewatermap.com

## Contaminants measured

| Contaminant | Category | Measured level | Sampling context | Federal limit | Status |
|---|---|---|---|---|---|
| Barium | Metals | 0.014 mg/L (Highest single sample) | System-wide | 2 mg/L (MCL) | Within the limit |
| Copper | Metals | 1.69 mg/L (90th percentile) | 90TH Percentile: 90% of your water utility levels were less than | 1.3 mg/L (Action level) | At or above the limit |
| Lead | Metals | 8 ug/L (90th percentile) | 90TH Percentile: 90% of your water utility levels were less than | 15 ug/L (Action level) | Within the limit |
| Combined Radium | Radionuclides | 0.6 pCi/L (Maximum) | System-wide | 5 pCi/L (MCL) | Within the limit |

## What these contaminants are

- **Barium** — A metal from erosion of natural deposits and industrial discharge. Long-term exposure above the federal limit can raise blood pressure.
- **Copper** — A metal that enters water from corroding household plumbing. Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.
- **Lead** — A toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. There is no safe level of lead; it harms brain development in children and raises blood pressure in adults. The EPA sets an action level, not a health goal above zero.
- **Combined Radium** — Combined radium-226 and radium-228 — naturally occurring radioactive elements. Long-term exposure above the federal limit increases the risk of bone cancer.

## How to read this

- A water-quality report covers an entire service area, not a single address.
- 'Federal limit' is the EPA standard (MCL, action level, treatment technique, etc.) that the measured level is compared against.
- 'At or above the federal limit' means the utility's own reported figure met or exceeded that standard.

_Figures are the utility's own published numbers. Generated 2026-05-25 from thewatermap.com._