Water Quality in Henderson, NC: 60 Violations — Grade D
Grade D · Score 43/100 · 5 water systems · Updated 2026-05-03
Henderson's water has significant violations. Water testing and filtration are recommended.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
EPA monitoring has flagged 60 reportable events for water systems in Henderson, NC.
Water Quality by ZIP Code in Henderson
Water quality varies across Henderson's 2 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 27536 | D | 43 | 30 | 6 | View report → |
| 27537 | D | 43 | 30 | 6 | View report → |
Violation Trend
EPA violations recorded for water systems serving Henderson.
Water Quality Overview
Henderson, North Carolina receives a water quality grade of D with an overall score of 43 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 5 water systems serving Henderson have accumulated 60 EPA violations, including 12 health-based violations. These violations are tracked across 2 ZIP codes serving approximately 18,228 people.
What Grade D Means
A grade of D indicates significant compliance issues. Henderson's water systems have accumulated violations that suggest ongoing water quality challenges. Residents should check their specific ZIP code report and consider water testing or filtration.
Lead Levels
The average 90th percentile lead level across Henderson water systems is 0.0300 mg/L — this exceeds the EPA action level of 0.015 mg/L. 2 ZIP codes exceed the EPA lead action level.
With 65% of homes built before 1986, Henderson 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
Henderson is in EPA Radon Zone 2 (Moderate risk). Testing is recommended, especially for homes with basements or ground-level living spaces.
Water Systems Serving Henderson
Henderson is served by 5 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 18,228 people across 2 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 20 enforcement actions against water systems serving Henderson. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Henderson
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 Henderson Water Systems
The following contaminants have been detected or caused violations across Henderson's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 0.06 mg/L | 18 | 2 | Yes |
| Lead and Copper Rule | Treatment Technique | N/A | 10 | 2 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 0.08 mg/L | 8 | 2 | No |
| Stage 1 DBP Rule | Treatment Technique | N/A | 6 | 2 | No |
| Revised Total Coliform Rule | Microbiological | N/A | 6 | 2 | No |
| Chlorite | Disinfection Byproducts | 1 mg/L | 4 | 2 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
Violation Trend Over Time
Year-by-year EPA violations recorded for water systems serving Henderson:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2021 | 4 | 4 |
| 2024 | 2 | 2 |
| 2025 | 6 | 6 |
Violations have increased from 4 in 2021 to 6 in 2025. This trend warrants monitoring.
EPA Enforcement History
The EPA and state regulators have taken 9 enforcement actions against water systems serving Henderson. Recent actions:
| Date | Action Type |
|---|---|
| 2025-09-04 | State Order Extension |
| 2025-08-07 | State Informal Action |
| 2025-08-07 | State Order Extension |
| 2025-08-01 | State Filed Judgment |
| 2025-08-01 | State Filed Suit |
| 2025-07-07 | State Informal Action |
| 2025-06-17 | State Order Extension |
| 2025-06-17 | State Informal Action |
| 2025-06-12 | State Filed Judgment |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-09-04.
Henderson vs. Nearby North Carolina Cities
How Henderson's water quality compares to similar cities in North Carolina:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Henderson | D | 60 | 5 | 18,228 |
| Spindale | D | 0 | 1 | 18,242 |
| Rutherfordton | B | 3 | 2 | 18,269 |
| Laurel Hill | B | 0 | 1 | 18,288 |
Common Questions About Henderson Water
These are the most common questions residents search for about water quality in Henderson, North Carolina:
Is Henderson water hard or soft? Water hardness varies by source. Henderson's 5 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Henderson tap water? Henderson's water receives a grade of D (43/100). There are 12 health-based violations — consider filtration.
What is the best water filter for Henderson? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Henderson vs. North Carolina Average
Understanding how Henderson 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 Henderson.
ZIP Codes in Henderson
Henderson spans 2 ZIP codes. The ZIP with the lowest water quality score is 27536. 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.