Public water system · NY5030112
ActiveHornellsville Water District 4 (Arkport)
At a glance
Hornellsville Water District 4 (Arkport) (PWSID NY5030112) is an active community water system in Steuben County, New York. It reports serving 29 people through 13 service connections. Its primary water source is purchased groundwater under influence, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
29
Service connections
13
Primary source
GUP
Purchased groundwater under influence
System type
CWS
Community water system
System record
How does Hornellsville Water District 4 (Arkport) compare with other water systems in Steuben County?
By EPA's size categories, Hornellsville Water District 4 (Arkport) is a very small system (500 people or fewer). Steuben County has 153 active public water systems. Its population served is well below the county average of 390 people per system, and accounts for less than 0.1% of the 59,732 people reported by systems filed under the county. Across New York, the 8,167 active systems average 2,374 people each. Nationally, the average active community water system reports serving 6,703 people, so Hornellsville Water District 4 (Arkport) 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. New York has 2,281 active community water systems, 28% of the state's 8,167 active systems. Purchased groundwater under the influence of surface water means the system buys that kind of water from another public water system. 8 New York systems (less than 0.1%) list purchased groundwater under influence as their primary source.
Who owns and regulates Hornellsville Water District 4 (Arkport)?
EPA lists Hornellsville Water District 4 (Arkport) as owned by a local government. The NY state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 40 of the 153 active systems in Steuben County (26%) are also owned by a local government.
Does Hornellsville Water District 4 (Arkport) have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2018. The violations listed here began between January 2014 and January 2018. By type: 4 monitoring and reporting. The contaminant or rule involved most often is Haloacetic acids (HAA5) (2 of them). EPA lists 2 as resolved and 2 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2018-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Archived |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Archived |
All 4 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.
Hornellsville Water District 4 (Arkport): frequently asked questions
Who runs Hornellsville Water District 4 (Arkport)?
Hornellsville Water District 4 (Arkport) (PWSID NY5030112) is a community water system owned by a local government. It is regulated by the NY state drinking water program.
How many people does Hornellsville Water District 4 (Arkport) serve?
Hornellsville Water District 4 (Arkport) reports serving 29 people through 13 service connections in Steuben County, New York.
Where does Hornellsville Water District 4 (Arkport) get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater under influence. Purchased groundwater under the influence of surface water means the system buys that kind of water from another public water system.
Does Hornellsville Water District 4 (Arkport) have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2018. 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 Hornellsville Water District 4 (Arkport)'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. EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the NY state drinking water program.
Where can I find Hornellsville Water District 4 (Arkport)'s water quality report?
As a community water system, Hornellsville Water District 4 (Arkport) 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 Steuben County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Corning City | Steuben | 10,300 | Community | Groundwater |
| Hornell City | Steuben | 9,870 | Community | Surface water |
| Bath Village Consolidated Sampling Area | Steuben | 5,400 | Community | Groundwater |
| Morningside Heights Wd / Erwin (T) | Steuben | 4,570 | Community | Groundwater |
| Canisteo Village | Steuben | 2,100 | Community | Groundwater |
| Sullivan Park - Corning Inc. | Steuben | 1,950 | Non-transient non-community | Groundwater |
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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, “Hornellsville Water District 4 (Arkport), PWSID NY5030112, New York”, https://aquacensus.com/water-systems/new-york/hornellsville-water-district-4-arkport-ny5030112 (data as of October 1, 2026).