Water Quality in Clemmons, NC: 14 Violations — Grade C
Grade C · Score 69/100 · 3 water systems · Updated 2026-05-03
Clemmons'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
EPA monitoring has flagged 14 reportable events for water systems in Clemmons, NC.
Water Quality by ZIP Code in Clemmons
Water quality varies across Clemmons's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 27012 | C | 69 | 14 | 1 | View report → |
Water Quality Overview
Clemmons, North Carolina receives a water quality grade of C with an overall score of 69 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 3 water systems serving Clemmons have accumulated 14 EPA violations, including 1 health-based violation. These violations are tracked across 1 ZIP codes serving approximately 388,444 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Clemmons'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
Lead testing data for Clemmons is currently being collected. The EPA requires all community water systems to test for lead under the Lead and Copper Rule.
Radon Risk
Clemmons is in EPA Radon Zone 2 (Moderate risk). Testing is recommended, especially for homes with basements or ground-level living spaces.
Water Systems Serving Clemmons
Clemmons is served by 3 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 388,444 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 Clemmons. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Clemmons
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 Clemmons Water Systems
The following contaminants have been detected or caused violations across Clemmons's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Stage 1 DBP 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 | 2 | 1 | No |
| Stage 2 DBP Rule | Treatment Technique | N/A | 2 | 1 | Yes |
| Fecal Coliform | Microbiological | N/A | 1 | 1 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 0.08 mg/L | 1 | 1 | No |
| Benzene | Organic | 0.005 mg/L | 1 | 1 | No |
| Total Organic Carbon | Disinfection Byproducts | 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 10 enforcement actions against water systems serving Clemmons. Recent actions:
| Date | Action Type |
|---|---|
| 2025-06-25 | State Order Extension |
| 2024-11-13 | State Order Extension |
| 2024-11-12 | State Informal Action |
| 2023-09-20 | State Order Extension |
| 2023-08-09 | State Informal Action |
| 2023-08-09 | State Order Extension |
| 2023-06-15 | State Filed Suit |
| 2023-06-06 | State Informal Action |
| 2023-05-09 | State Order Extension |
| 2023-04-26 | State Order Extension |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-06-25.
Clemmons vs. Nearby North Carolina Cities
How Clemmons's water quality compares to similar cities in North Carolina:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Clemmons | C | 14 | 3 | 388,444 |
| Pfafftown | B | 2 | 2 | 388,258 |
| Bethania | D | 0 | 1 | 388,060 |
| Lewisville | C | 0 | 1 | 388,060 |
Recommended Water Filters for Clemmons
Based on contaminants detected in Clemmons's water supply, these filter types are recommended:
Granular Activated Carbon (GAC, whole-house POE)
- Removes: Trihalomethane (TTHM)
- Effectiveness: 80-99%
- Cost range: $400–$2000
- Certification: NSF/ANSI 53
- Recommended products:
Granular Activated Carbon (GAC, under-sink or whole-house)
- Removes: Haloacetic Acid HAA5
- Effectiveness: 60-80%
- Cost range: $100–$600
- Certification: NSF/ANSI 53
- Recommended products:
Common Questions About Clemmons Water
These are the most common questions residents search for about water quality in Clemmons, North Carolina:
Is Clemmons water hard or soft? Water hardness varies by source. Clemmons's 3 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Clemmons tap water? Clemmons's water receives a grade of C (69/100). There are 1 health-based violations — consider filtration.
What is the best water filter for Clemmons? Based on detected contaminants, a granular activated carbon (gac, whole-house poe) filter is most recommended. See our Water Filter Matcher for personalized recommendations.
Clemmons vs. North Carolina Average
Understanding how Clemmons 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 Clemmons.
ZIP Codes in Clemmons
Clemmons spans 1 ZIP code. The ZIP with the lowest water quality score is 27012. 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.