Drinking water quality · 2024
· Verified
What's in Chapel Hill Water System, MD tap water
6 contaminants were measured in the Chapel Hill Water System, 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
- 6
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- Chlorine
- Service area
- MD
Where your water comes from · EPA SDWIS
Chapel Hill Water System, MD's drinking water comes from ground water, drawn from 3 sources.
Source
- CHAPEL HILL 2 BA817250
- CHAPEL HILL1 BA030295
- CHAPEL HILL WELL 3 BA943881
Treatment
- WTP - WELLS 1, 2, 3
Distribution
Historical readings · EPA Six-Year Review (2012–2019)
2 contaminants historically over EPA limits in Chapel Hill Water System, 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) |
|---|---|---|---|
GROSS BETA worst: 2013 | 12.3 mrem/yr 3.1× | 4 mrem/yr | '13 |
NITRATE worst: 2018 | 11.7 mg/L 1.2× | 10 mg/L | '12'13'14'15'16'17'18'19 |
NITRATE NITRITE worst: 2015 | 4.7 mg/L within | 10 mg/L | '15 |
GROSS ALPHA worst: 2014 | 3.5 pCi/L within | 15 pCi/L | '14 |
BARIUM worst: 2014 | 0.24 mg/L within above national p90 | 2 mg/L | '14 |
RADIUM 226 228 worst: 2014 | 0.5 pCi/L within below national p90 | 5 pCi/L | '14 |
CHROMIUM worst: 2014 | 0.004 mg/L within below national p90 | 0.1 mg/L | '14'17 |
HAA5 worst: 2014 | 0.0011 mg/L within | 0.06 mg/L | '14 |
TTHM worst: 2017 | 0.00082 mg/L within | 0.08 mg/L | '14'17 |
DBAA worst: 2014 | 0.0011 mg/L | — | '14 |
CHLOROFORM worst: 2013 | 0.0006 mg/L | — | '13'14'16 |
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 3.54–6 mg/LRangeSystem-wide | 4 mg/LMRDL | At or above the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 0.36 mg/L90th percentile90TH Percentile: 90% of your water utility levels were less than | 1.3 mg/LAction level | Within the limit |
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 2 ug/L90th percentile90TH Percentile: 90% of your water utility levels were less than | 15 ug/LAction level | Within the limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 0.3 pCi/LHighest single sampleSystem-wide | 5 pCi/LMCL | Within the limit |
People also ask about Chapel Hill Water System, MD's water
+Is Chapel Hill Water System, MD tap water safe to drink in 2024?
The 2024 Consumer Confidence Report for the Chapel Hill Water System, MD water utility lists 1 contaminant at or above the federal limit: Chlorine. 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 Chapel Hill Water System, MD tap water?
6 contaminants were measured in Chapel Hill Water System, MD's 2024 Consumer Confidence Report, spanning metals, radionuclides, and disinfectants. 6 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 Chapel Hill Water System, MD tap water?
One contaminant in Chapel Hill Water System, MD's 2024 report sits at or above the federal limit: Chlorine (1.5× 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 Chapel Hill Water System, MD tap water?
The contaminant with the highest measured value relative to its federal limit in the 2024 report is Chlorine, at 1.5× the federal threshold. It belongs to the disinfectants family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from Chapel Hill Water System, 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 Chapel Hill Water System, 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.