Public water system · MA1043025
ActiveViant As and O Holding LLC
At a glance
Viant As and O Holding LLC (PWSID MA1043025) is an active non-transient non-community water system in Hampden County, Massachusetts. It reports serving 90 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 1999.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
90
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Viant As and O Holding LLC compare with other water systems in Hampden County?
By EPA's size categories, Viant As and O Holding LLC is a very small system (500 people or fewer). Hampden County has 115 active public water systems. Its population served is well below the county average of 3,821 people per system, and accounts for less than 0.1% of the 439,404 people reported by systems filed under the county. Across Massachusetts, the 1,636 active systems average 6,275 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Viant As and O Holding LLC is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Massachusetts has 246 active non-transient non-community water systems, 15% of the state's 1,636 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,354 Massachusetts systems (83%) list groundwater as their primary source.
Who owns and regulates Viant As and O Holding LLC?
EPA lists Viant As and O Holding LLC as privately owned. The MA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 78 of the 115 active systems in Hampden County (68%) are also privately owned.
Does Viant As and O Holding LLC have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 1999. The violations listed here began between April 1999 and April 1999. By type: 12 monitoring and reporting. The contaminants or rules involved are 1,2-Dichloroethane, 1,1,1-Trichloroethane, Carbon tetrachloride and 1,2-Dichloropropane. EPA lists 12 as archived. 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 |
|---|---|---|---|---|
| 1999-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Archived |
| 1999-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Archived |
| 1999-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Archived |
| 1999-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Archived |
| 1999-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Archived |
| 1999-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,2-Trichloroethanecode 2985 | No | Archived |
| 1999-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Archived |
| 1999-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Archived |
| 1999-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Archived |
| 1999-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Archived |
| 1999-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Vinyl chloridecode 2976 | No | Archived |
| 1999-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Archived |
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.
Viant As and O Holding LLC: frequently asked questions
Who runs Viant As and O Holding LLC?
Viant As and O Holding LLC (PWSID MA1043025) is a non-transient non-community water system privately owned. It is regulated by the MA state drinking water program.
How many people does Viant As and O Holding LLC serve?
Viant As and O Holding LLC reports serving 90 people through 1 service connection in Hampden County, Massachusetts.
Where does Viant As and O Holding LLC get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Viant As and O Holding LLC have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 1999. 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 Viant As and O Holding LLC'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, none is health-based, and the most recent began in April 1999. For current results, consult EPA ECHO, or the MA state drinking water program.
Where can I find Viant As and O Holding LLC's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Viant As and O Holding LLC is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Hampden County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Springfield Water and Sewer Commission | Hampden | 169,170 | Community | Surface water |
| Chicopee Water Dept (MWRA) | Hampden | 55,560 | Community | Purchased surface water |
| Westfield Dpwwater Division | Hampden | 41,094 | Community | Surface water |
| Holyoke Water Works | Hampden | 37,838 | Community | Surface water |
| West Springfield Dpw Water Division | Hampden | 28,835 | Community | Groundwater |
| Agawam Water Department | Hampden | 28,692 | Community | Purchased surface water |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Viant As and O Holding LLC, PWSID MA1043025, Massachusetts”, https://aquacensus.com/water-systems/massachusetts/viant-as-and-o-holding-llc-ma1043025 (data as of October 1, 2026).