Water Quality in Black Mountain, NC: 16 Violations — Grade C
Grade C · Score 58/100 · 4 water systems · Updated 2026-05-03
Black Mountain's water has moderate compliance issues. Residents in affected areas should consider filtration.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Tracked under the EPA Safe Drinking Water program, Black Mountain, NC shows 16 water violations on file — findings that span multiple violation categories and are detailed system by system in the data grid further down the page.
Water Quality by ZIP Code in Black Mountain
Water quality varies across Black Mountain's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 28711 | C | 58 | 16 | 2 | View report → |
Water Quality Overview
Black Mountain, North Carolina receives a water quality grade of C with an overall score of 58 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 4 water systems serving Black Mountain have accumulated 16 EPA violations, including 2 health-based violations. These violations are tracked across 1 ZIP codes serving approximately 12,490 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Black Mountain's water systems have some violations that warrant attention. While the water may still be safe for most people, residents in affected ZIP codes should consider additional testing or filtration.
Lead Levels
The average 90th percentile lead level across Black Mountain water systems is 0.0030 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 51% of homes built before 1986, Black Mountain has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Radon Risk
Black Mountain is in EPA Radon Zone 1 (High risk). The EPA recommends all homes in Zone 1 areas be tested for radon. Radon is the second leading cause of lung cancer after smoking.
Water Systems Serving Black Mountain
Black Mountain is served by 4 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 12,490 people across 1 ZIP codes.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 10 enforcement actions against water systems serving Black Mountain. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Black Mountain
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in Black Mountain Water Systems
The following contaminants have been detected or caused violations across Black Mountain's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Stage 2 DBP Rule | Treatment Technique | N/A | 4 | 1 | Yes |
| Stage 1 DBP Rule | Treatment Technique | N/A | 3 | 1 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 0.08 mg/L | 2 | 1 | No |
| Surface Water Treatment Rule | Treatment Technique | N/A | 2 | 1 | No |
| Revised Total Coliform Rule | Microbiological | N/A | 2 | 1 | No |
| Lead and Copper Rule | Treatment Technique | N/A | 1 | 1 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
EPA Enforcement History
The EPA and state regulators have taken 9 enforcement actions against water systems serving Black Mountain. Recent actions:
| Date | Action Type |
|---|---|
| 2025-08-01 | State Filed Judgment |
| 2025-08-01 | State Filed Suit |
| 2025-07-01 | State Order Extension |
| 2025-03-26 | State Filed Judgment |
| 2025-03-26 | State Filed Suit |
| 2025-03-26 | State Informal Enforcement |
| 2025-02-26 | State Filed Judgment |
| 2025-02-26 | State Filed Suit |
| 2025-02-26 | State Informal Enforcement |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-08-01.
Black Mountain vs. Nearby North Carolina Cities
How Black Mountain's water quality compares to similar cities in North Carolina:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Black Mountain | C | 16 | 4 | 12,490 |
| Pittsboro | B | 7 | 5 | 12,474 |
| Erwin | B | 0 | 1 | 12,442 |
| Millers Creek | B | 2 | 1 | 12,573 |
Common Questions About Black Mountain Water
These are the most common questions residents search for about water quality in Black Mountain, North Carolina:
Is Black Mountain water hard or soft? Water hardness varies by source. Black Mountain's 4 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Black Mountain tap water? Black Mountain's water receives a grade of C (58/100). There are 2 health-based violations — consider filtration.
What is the best water filter for Black Mountain? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Black Mountain vs. North Carolina Average
Understanding how Black Mountain compares to the broader North Carolina average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within Black Mountain.
ZIP Codes in Black Mountain
Black Mountain spans 1 ZIP code. The ZIP with the lowest water quality score is 28711. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.