Public water system · MA2186000
ActiveAquarion Water Company, Millbury
At a glance
Aquarion Water Company, Millbury (PWSID MA2186000) is an active community water system in Worcester County, Massachusetts. It reports serving 11,368 people through 3,981 service connections. Its primary water source is purchased surface water, 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 July 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
11,368
Service connections
3,981
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Aquarion Water Company, Millbury compare with other water systems in Worcester County?
By EPA's size categories, Aquarion Water Company, Millbury is a large system (10,001 to 100,000 people). Worcester County has 346 active public water systems. Its population served is about 5.1 times the county average of 2,239 people per system, and accounts for 1.5% of the 774,523 people reported by systems filed under the county. Across Massachusetts, the 1,636 active systems average 6,275 people each. Nationally, the average active community water system reports serving 6,703 people, so Aquarion Water Company, Millbury is about 70% above 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. Massachusetts has 531 active community water systems, 32% of the state's 1,636 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 126 Massachusetts systems (7.7%) list purchased surface water as their primary source.
Who owns and regulates Aquarion Water Company, Millbury?
EPA lists Aquarion Water Company, Millbury 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. 252 of the 346 active systems in Worcester County (73%) are also privately owned.
Does Aquarion Water Company, Millbury have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2020. The violations listed here began between April 1998 and July 2020. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 10 as archived, 1 as addressed and 1 as resolved. 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. Addressed means the violation is not resolved or archived and is covered by formal enforcement. 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 |
|---|---|---|---|---|
| 2020-07-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Addressed |
| 2019-06-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1998-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Archived |
| 1998-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Archived |
| 1998-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Archived |
| 1998-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Archived |
| 1998-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Archived |
| 1998-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Archived |
| 1998-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Archived |
| 1998-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Archived |
| 1998-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Archived |
| 1998-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | 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.
Aquarion Water Company, Millbury: frequently asked questions
Who runs Aquarion Water Company, Millbury?
Aquarion Water Company, Millbury (PWSID MA2186000) is a community water system privately owned. It is regulated by the MA state drinking water program.
How many people does Aquarion Water Company, Millbury serve?
Aquarion Water Company, Millbury reports serving 11,368 people through 3,981 service connections in Worcester County, Massachusetts.
Where does Aquarion Water Company, Millbury 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 Aquarion Water Company, Millbury 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 July 2020. 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 Aquarion Water Company, Millbury'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 July 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the MA state drinking water program.
Where can I find Aquarion Water Company, Millbury's water quality report?
As a community water system, Aquarion Water Company, Millbury 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 Worcester County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Worcester Dpwp, Water Supply Division | Worcester | 206,518 | Community | Surface water |
| Fitchburg Dpw Division of Water Supply | Worcester | 41,946 | Community | Surface water |
| Leominster Water Division | Worcester | 41,683 | Community | Surface water |
| Shrewsbury Water Department | Worcester | 38,325 | Community | Groundwater |
| Milford Water Department | Worcester | 30,379 | Community | Surface water |
| Westborough Water Department | Worcester | 21,567 | Community | 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, “Aquarion Water Company, Millbury, PWSID MA2186000, Massachusetts”, https://aquacensus.com/water-systems/massachusetts/aquarion-water-company-millbury-ma2186000 (data as of October 1, 2026).