Community Water System · PWS WV3305412
Williamstown Water Dept
Williamstown, West Virginia 26187 - drinking water served from groundwater sources to 3,469 people, tracked in EPA SDWIS and UCMR5.
- 3,469
- People served
- 95
- EPA violations
- 9
- Health-based
- 7 PFAS
- UCMR5 result
The verdict
EPA records 95 drinking-water violations at Williamstown Water Dept, 9% of them health-based - below the West Virginia per-system average, and UCMR5 testing detected 7 PFAS compounds.
- 95
- Total EPA violations on record
- 9%
- Health-based (MCL / treatment failure)
- 3,469
- People served by this system
- 7
- PFAS compounds detected (UCMR5)
Water Quality Snapshot: Williamstown Water Dept
Williamstown Water Dept is a local-owned community water system that delivers drinking water to 3,469 residents in Williamstown, West Virginia (Wood County) through 1,567 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 95 total violations for this system , of which 9 (9%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 74 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.
The most frequently cited contaminant at this system is LASSO, recorded in 6 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 7 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 32 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.
Across West Virginia, EPA tracks 774 public water systems serving 1,597,057 people, with 187,590 cumulative violations and 11,480 health-based violations on record. About 99% of systems in the state carry at least one violation, and state-wide the average per system is 242.4 violations. Statewide, 46 of 102 UCMR5-tested systems have reported PFAS detections (45.1%).
Williamstown Water Dept's 95 violations sit below the West Virginia average.
All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
7 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,567
- County
- Wood
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 74
- Treatment Tech Violations
- 5
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| LASSO | MR | 6 | 2014 |
| Groundwater Rule | TT | 5 | 2020 |
| Coliform (TCR) | MCL | 4 | 2002 |
| Di(2-ethylhexyl) adipate | MR | 4 | 2008 |
| Picloram | MR | 4 | 2008 |
| Carbofuran | MR | 4 | 2008 |
| Atrazine | MR | 4 | 2008 |
| Heptachlor | MR | 4 | 2008 |
| Heptachlor epoxide | MR | 4 | 2008 |
| 2,4-D | MR | 4 | 2008 |
| Coliform (TCR) | MR | 4 | 2013 |
| Public Notice | Other | 4 | 2014 |
| Consumer Confidence Rule | Other | 4 | 2024 |
| Lead and Copper Rule | MR | 4 | 2024 |
| Di(2-ethylhexyl) phthalate | MR | 4 | 2008 |
| Hexachlorocyclopentadiene | MR | 4 | 2008 |
| Simazine | MR | 4 | 2008 |
| Total Polychlorinated Biphenyls (PCB) | MR | 4 | 2008 |
| BHC-GAMMA | MR | 4 | 2008 |
| Benzo(a)pyrene | MR | 4 | 2008 |
| OXAMYL | MR | 4 | 2008 |
| Chlordane | MR | 4 | 2008 |
| Groundwater Rule | Other | 2 | 2020 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 12 of 58 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFOA | 5/16/2023 | 20.20 ppt | 4.00 ppt | Detected |
| 6:2 FTS | 5/16/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 5/16/2023 | 6.00 ppt | 5.00 ppt | Detected |
| HFPO-DA | 5/16/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 5/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 5/16/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 5/16/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 5/16/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxA | 5/16/2023 | 9.10 ppt | 3.00 ppt | Detected |
| 4:2 FTS | 5/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 5/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NEtFOSAA | 5/16/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFOS | 5/16/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFNA | 5/16/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 5/16/2023 | 31.30 ppt | 3.00 ppt | Detected |
| PFHpA | 5/16/2023 | 3.00 ppt | 3.00 ppt | Detected |
| PFBS | 5/16/2023 | 9.40 ppt | 3.00 ppt | Detected |
| NMeFOSAA | 5/16/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTrDA | 5/16/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFDoA | 5/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 5/16/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 5/16/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 5/16/2023 | 3.50 ppt | 3.00 ppt | Detected |
| PFMBA | 5/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 5/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 5/16/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFPeS | 5/16/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 5/16/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 5/16/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| 9Cl-PF3ONS | 11/14/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 11/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 11/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 11/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 11/14/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 11/14/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFEESA | 11/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 11/14/2023 | 32.00 ppt | 4.00 ppt | Detected |
| PFMBA | 11/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 11/14/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxA | 11/14/2023 | 5.20 ppt | 3.00 ppt | Detected |
| NFDHA | 11/14/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFDA | 11/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 11/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOS | 11/14/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFNA | 11/14/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 11/14/2023 | 8.70 ppt | 3.00 ppt | Detected |
| PFHpA | 11/14/2023 | 3.90 ppt | 3.00 ppt | Detected |
| PFBS | 11/14/2023 | 7.40 ppt | 3.00 ppt | Detected |
| PFDoA | 11/14/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTrDA | 11/14/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Williamstown Water Dept.
EPA SDWIS, Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID WV3305412 on SDWISSource: EPA SDWIS Federal Reports Search
West Virginia Drinking Water Authority
West Virginia's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.
Find WV regulator via EPA SDWISViolation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2024 | Consumer Confidence Rule | Other | 4 | SDWIS / WV3305412 / 7000 |
| 2024 | Lead and Copper Rule | MR | 4 | SDWIS / WV3305412 / 5000 |
| 2020 | Groundwater Rule | TT | 5 | SDWIS / WV3305412 / 0700 |
| 2020 | Groundwater Rule | Other | 2 | SDWIS / WV3305412 / 0700 |
| 2014 | LASSO | MR | 6 | SDWIS / WV3305412 / 2051 |
| 2014 | Public Notice | Other | 4 | SDWIS / WV3305412 / 7500 |
| 2013 | Coliform (TCR) | MR | 4 | SDWIS / WV3305412 / 3100 |
| 2008 | Di(2-ethylhexyl) adipate | MR | 4 | SDWIS / WV3305412 / 2035 |
| 2008 | Picloram | MR | 4 | SDWIS / WV3305412 / 2040 |
| 2008 | Carbofuran | MR | 4 | SDWIS / WV3305412 / 2046 |
| 2008 | Atrazine | MR | 4 | SDWIS / WV3305412 / 2050 |
| 2008 | Heptachlor | MR | 4 | SDWIS / WV3305412 / 2065 |
| 2008 | Heptachlor epoxide | MR | 4 | SDWIS / WV3305412 / 2067 |
| 2008 | 2,4-D | MR | 4 | SDWIS / WV3305412 / 2105 |
| 2008 | Di(2-ethylhexyl) phthalate | MR | 4 | SDWIS / WV3305412 / 2039 |
How Williamstown Water Dept Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | Williamstown Water Dept | West Virginia avg | Federal benchmark |
|---|---|---|---|
| Total violations | 95 | 242.4 | SDWA compliance, any non-zero count is a recorded breach |
| Health-based violations | 9 | 14.8 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | 7 compounds | 45.1% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 3,469 | 2,063 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 774 regulated public water systems in West Virginia.
Federal MCL reference, Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026) |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
Is Williamstown Water Dept water safe to drink? ▼
How many people does Williamstown Water Dept serve? ▼
What type of violations does Williamstown Water Dept have? ▼
Has PFAS been detected in Williamstown Water Dept water? ▼
What water source does Williamstown Water Dept use? ▼
Where does this data come from? ▼
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.