Drinking water quality · 2024
What's in Chapel Hill Water System, MD tap water
7 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
- 7
- Over federal limit
- 1
- Approaching the limit
- 1
- 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
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-based14 violations on record · most recent Apr 2018resolved
- Treatment technique violationHealth-based3 violations on record · most recent Jan 1995resolved
- Monitoring & reporting1 violation on record · most recent Jan 19991 open
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
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/LMCL | At or above the limit |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Nitrate Nitrite | 9.2 mg/LMaximumSystem-wide | 10 mg/LMCL | Approaching the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 5.62–6.46 mg/LRangeSystem-wide | 10 mg/LMCL | Within 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. | 0.002 mg/L90th percentileAt the tap | 0.015 mg/LAction level | Within the limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 2.4 pCi/LHighest single sampleSystem-wide | 15 pCi/LMCL | Within the limit |
| 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?
7 contaminants were measured in Chapel Hill Water System, MD's 2024 Consumer Confidence Report, spanning metals, radionuclides, and disinfectants. 7 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.
+Are any contaminants in Chapel Hill Water System, MD tap water approaching the federal limit?
One contaminant is between 80% and 100% of the federal limit in this report: Nitrate Nitrite. Approaching means measured but not in violation — a margin that can close quickly if conditions change.
+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.