Water Quality in Williamstown, WV: 3 Violations — Grade C
Grade C · Score 69/100 · 1 water system · Updated 2026-05-03
Williamstown'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
Compliance records maintained by the EPA for Williamstown, WV log 3 violations — accumulated reportable events drawn from every local utility in the SDWIS national tracking system.
Water Quality by ZIP Code in Williamstown
Water quality varies across Williamstown's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 26187 | C | 69 | 3 | 0 | View report → |
Water Quality Overview
Williamstown, West Virginia 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 1 water system serving Williamstown have accumulated 3 EPA violations (all monitoring/reporting type). These violations are tracked across 1 ZIP codes serving approximately 3,469 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Williamstown'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 Williamstown water systems is 0.0034 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 62% of homes built before 1986, Williamstown 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
Williamstown is in EPA Radon Zone 2 (Moderate risk). Testing is recommended, especially for homes with basements or ground-level living spaces.
Water Systems Serving Williamstown
Williamstown is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 3,469 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 9 enforcement actions against water systems serving Williamstown. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Williamstown
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 Williamstown Water Systems
The following contaminants have been detected or caused violations across Williamstown's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Surface Water Treatment Rule | Treatment Technique | N/A | 1 | 1 | No |
| Stage 1 DBP Rule | Treatment Technique | N/A | 1 | 1 | No |
| Lead | Inorganic | 0.015 mg/L | 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 Williamstown. Recent actions:
| Date | Action Type |
|---|---|
| 2024-11-15 | State Filed Judgment |
| 2024-11-15 | State Informal Enforcement |
| 2024-09-30 | State Order Extension |
| 2024-09-14 | State Filed Judgment |
| 2021-05-10 | State Order Extension |
| 2021-05-07 | State Informal Action |
| 2021-02-12 | State Filed Judgment |
| 2021-02-11 | State Filed Judgment |
| 2021-02-11 | State Informal Enforcement |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2024-11-15.
Williamstown vs. Nearby West Virginia Cities
How Williamstown's water quality compares to similar cities in West Virginia:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Williamstown | C | 3 | 1 | 3,469 |
| Breeden | B | 0 | 1 | 3,463 |
| Crum | B | 4 | 1 | 3,463 |
| Dunlow | D | 0 | 1 | 3,463 |
Common Questions About Williamstown Water
These are the most common questions residents search for about water quality in Williamstown, West Virginia:
Is Williamstown water hard or soft? Water hardness varies by source. Williamstown's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Williamstown tap water? Williamstown's water receives a grade of C (69/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Williamstown? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Williamstown vs. West Virginia Average
Understanding how Williamstown compares to the broader West Virginia 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 Williamstown.
ZIP Codes in Williamstown
Williamstown spans 1 ZIP code. The ZIP with the lowest water quality score is 26187. 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.