Public water system · WV3303512

Active

Triadelphia Water Dept

At a glance

Triadelphia Water Dept (PWSID WV3303512) is an active community water system in Ohio County, West Virginia. It reports serving 979 people through 438 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2025.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

979

Service connections

438

Primary source

SWP

Purchased surface water

System type

CWS

Community water system

System record

PWSIDWV3303512

System typeCommunity water system

Activity statusActive

Population served979

Service connections438

Primary water sourcePurchased surface water

Owner typeLocal government

Primacy agencyWV state drinking water program

City servedTriadelphia

StateWest Virginia

ZIP—

CountyOhio County

How does Triadelphia Water Dept compare with other water systems in Ohio County?

By EPA's size categories, Triadelphia Water Dept is a small system (501 to 3,300 people). Ohio County has 10 active public water systems, and Triadelphia Water Dept is the 6th-largest of them by population served. Its population served is well below the county average of 4,475 people per system, and accounts for 2.2% of the 44,754 people reported by systems filed under the county. Across West Virginia, the 791 active systems average 2,032 people each. Nationally, the average active community water system reports serving 6,703 people, so Triadelphia Water Dept is well below that figure.

What does “community water system” mean?

A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. West Virginia has 427 active community water systems, 54% of the state's 791 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 169 West Virginia systems (21%) list purchased surface water as their primary source.

Who owns and regulates Triadelphia Water Dept?

EPA lists Triadelphia Water Dept as owned by a local government. The WV state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 10 of the 10 active systems in Ohio County (100%) are also owned by a local government.

Does Triadelphia Water Dept have drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2025. The violations listed here began between January 2019 and October 2025. By type: 6 public notice, recordkeeping or other, 5 monitoring and reporting and 1 required treatment not met. The contaminant or rule involved most often is Public Notice (5 of them). EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.

Began	Violation	Contaminant or rule	Health-based	Status
2025-10-01	Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72	Consumer Confidence Rulecode 7000	No	Resolved
2023-08-16	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2023-08-16	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2022-03-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2022-03-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2021-08-14	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2021-04-14	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2020-10-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2020-06-21	Required treatment not metFailure To Address Deficiency · code 45	Long Term 2 Enhanced Surface Water Treatment Rulecode 0800	Yes	Resolved
2020-01-01	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Resolved
2019-09-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2019-01-14	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved

The 12 most recent violations in EPA's records, newest first. Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.

Triadelphia Water Dept: frequently asked questions

Who runs Triadelphia Water Dept?

Triadelphia Water Dept (PWSID WV3303512) is a community water system owned by a local government. It is regulated by the WV state drinking water program.

How many people does Triadelphia Water Dept serve?

Triadelphia Water Dept reports serving 979 people through 438 service connections in Ohio County, West Virginia.

Where does Triadelphia Water Dept get its water?

EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.

Does Triadelphia Water Dept have any drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2025. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.

Is Triadelphia Water Dept's water safe to drink?

AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the WV state drinking water program.

Where can I find Triadelphia Water Dept's water quality report?

As a community water system, Triadelphia Water Dept must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.

Other water systems in Ohio County

Water system	County	Population served	Type	Source
Wheeling	Ohio	29,899	Community	Surface water
Ohio County Psd	Ohio	6,297	Community	Purchased surface water
Bethlehem	Ohio	2,968	Community	Purchased surface water
Ohio County Psd No. 3	Ohio	2,657	Community	Purchased surface water
Ohio County Psd No 2	Ohio	1,153	Community	Purchased surface water
Valley Grove Water Dept	Ohio	610	Community	Purchased surface water

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About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Triadelphia Water Dept, PWSID WV3303512, West Virginia”, https://aquacensus.com/water-systems/west-virginia/triadelphia-water-dept-wv3303512 (data as of October 1, 2026).