Public water system · MA1193000
ActiveMonterey Water Company
At a glance
Monterey Water Company (PWSID MA1193000) is an active community water system in Berkshire County, Massachusetts. It reports serving 138 people through 72 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in March 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
138
Service connections
72
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Monterey Water Company compare with other water systems in Berkshire County?
By EPA's size categories, Monterey Water Company is a very small system (500 people or fewer). Berkshire County has 183 active public water systems. Its population served is well below the county average of 730 people per system, and accounts for 0.1% of the 133,497 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 Monterey Water Company 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. Massachusetts has 531 active community water systems, 32% 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 Monterey Water Company?
EPA lists Monterey Water Company 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. 140 of the 183 active systems in Berkshire County (77%) are also privately owned.
Does Monterey Water Company have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in March 2015. The violations listed here began between October 2014 and March 2015. By type: 6 required treatment not met and 6 monitoring and reporting. The contaminant or rule involved most often is Groundwater Rule (6 of them). 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 |
|---|---|---|---|---|
| 2015-03-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Archived |
| 2015-03-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | E. colicode 3014 | No | Archived |
| 2015-02-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | E. colicode 3014 | No | Archived |
| 2015-02-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Archived |
| 2015-01-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | E. colicode 3014 | No | Archived |
| 2015-01-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Archived |
| 2014-12-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | E. colicode 3014 | No | Archived |
| 2014-12-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Archived |
| 2014-11-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | E. colicode 3014 | No | Archived |
| 2014-11-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Archived |
| 2014-10-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | E. colicode 3014 | No | Archived |
| 2014-10-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | 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.
Monterey Water Company: frequently asked questions
Who runs Monterey Water Company?
Monterey Water Company (PWSID MA1193000) is a community water system privately owned. It is regulated by the MA state drinking water program.
How many people does Monterey Water Company serve?
Monterey Water Company reports serving 138 people through 72 service connections in Berkshire County, Massachusetts.
Where does Monterey Water Company 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 Monterey Water Company have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in March 2015. 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 Monterey Water Company'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, 6 are health-based, and the most recent began in March 2015. For current results, consult the system's annual water quality report, EPA ECHO, or the MA state drinking water program.
Where can I find Monterey Water Company's water quality report?
As a community water system, Monterey Water Company 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 Berkshire County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Pittsfield Dpu Water Dept | Berkshire | 43,927 | Community | Surface water |
| North Adams Water Dept | Berkshire | 13,000 | Community | Surface water |
| Lenox Dpw Water Division | Berkshire | 9,800 | Community | Surface water |
| Adams Fire District | Berkshire | 7,945 | Community | Groundwater |
| Williamstown Water Dept | Berkshire | 7,326 | Community | Groundwater |
| Dalton Fire District | Berkshire | 6,330 | 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, “Monterey Water Company, PWSID MA1193000, Massachusetts”, https://aquacensus.com/water-systems/massachusetts/monterey-water-company-ma1193000 (data as of October 1, 2026).