Westborough Water Quality
Massachusetts
According to EPA SDWIS, Westborough, Massachusetts is served by 8 community water systems covering about 22,280 people. The same extract lists 13 health-based violation records, most recently coded 0200 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Westborough, Massachusetts is delivered through 8 EPA-regulated community water systems serving an estimated 22,280 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 13 violation records across the 8 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 5 distinct EPA contaminant codes: Surface Water Treatment Rule, Revised Total Coliform Rule, Combined Radium (-226 and -228), Groundwater Rule, Coliform (TCR). 4 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Massachusetts drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| WESTBOROUGH WATER DEPARTMENT | 21,567 | 2 | Health |
| CEDAR CREEK MHP | 154 | 0 | Clean |
| REGENCY AT BOLTON CONDOMINIUMS | 148 | 0 | Clean |
| REVEL PELHAM | 123 | 10 | Health |
| LANCASTER WOODS CONDOMINIUMS | 120 | 1 | Health |
| ESTATES AT HIGHLAND RIDGE | 100 | 0 | Clean |
| SUNSET RIDGE CONDOMINIUMS | 42 | 0 | Clean |
| CHARLTON MANOR REST HOME | 26 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| WESTBOROUGH WATER DEPARTMENT | Surface Water Treatment Rule | 2025-11-01 |
| REVEL PELHAM | Revised Total Coliform Rule | 2024-10-01 |
| REVEL PELHAM | Revised Total Coliform Rule | 2024-10-01 |
| REVEL PELHAM | Combined Radium (-226 and -228) | 2023-04-01 |
| REVEL PELHAM | Combined Radium (-226 and -228) | 2023-04-01 |
| REVEL PELHAM | Combined Radium (-226 and -228) | 2023-01-01 |
| REVEL PELHAM | Combined Radium (-226 and -228) | 2023-01-01 |
| REVEL PELHAM | Combined Radium (-226 and -228) | 2022-10-01 |
| REVEL PELHAM | Combined Radium (-226 and -228) | 2022-10-01 |
| REVEL PELHAM | Combined Radium (-226 and -228) | 2021-04-01 |
| LANCASTER WOODS CONDOMINIUMS | Revised Total Coliform Rule | 2018-10-01 |
| REVEL PELHAM | Groundwater Rule | 2016-03-25 |
| WESTBOROUGH WATER DEPARTMENT | Coliform (TCR) | 2016-02-01 |
What are Westborough's health-based records for?
Westborough's health-based violation records carry 5 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Combined Radium (-226 and -228) | 7 | 1 |
| Revised Total Coliform Rule | 3 | 2 |
| Surface Water Treatment Rule | 1 | 1 |
| Groundwater Rule | 1 | 1 |
| Coliform (TCR) | 1 | 1 |
TRI Facilities in Westborough
| Facility | Total Releases |
|---|---|
| Gvs N.a. Inc. | 78.6K lbs |
| Cytiva | 23.6K lbs |
| Neo Technology Solution | 16 lbs |
| Ascend Elements | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Westborough, Massachusetts? ▼
How many water violations does Westborough have in this EPA extract? ▼
What contaminants were found in Westborough water? ▼
How many water systems serve Westborough? ▼
Where does Westborough get its drinking water? ▼
Are there pollution sources near Westborough? ▼
How does Westborough compare in Massachusetts?
Of the 343 Massachusetts places with at least one community water system on file, Westborough ranks #2 by number of systems (8).
About This Data
Figures here are the current EPA SDWIS extract joined to the 8 community water systems whose service area lists Westborough, ranked against the 343 Massachusetts places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.