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Community Water System · PWS MA1112000

Granville Centre Water Co

Granville, Massachusetts 01034 - drinking water served from groundwater sources to 70 people, tracked in EPA SDWIS and UCMR5.

70
People served
138
EPA violations
2
Health-based
Untested
UCMR5 result

The verdict

EPA records 138 drinking-water violations at Granville Centre Water Co, 1% of them health-based - above the Massachusetts per-system average.

138
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
70
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Granville Centre Water Co

Granville Centre Water Co is a private-owned community water system that delivers drinking water to 70 residents in Granville, Massachusetts (Hampden County) through 30 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 138 total violations for this system , of which 2 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 113 monitoring and reporting violations are on file. The most recent violation on record dates to 2018.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 6 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Massachusetts, EPA tracks 1,599 public water systems serving 10,332,845 people, with 73,886 cumulative violations and 7,389 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 46.2 violations. Statewide, 143 of 263 UCMR5-tested systems have reported PFAS detections (54.4%).

Granville Centre Water Co's 138 violations sit above the Massachusetts average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
70
Total Violations
138
Health-Based Violations
2
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
30
County
Hampden
School/Daycare
No
MCL Violations
2
Monitoring Violations
113
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 6 2011
Nitrate MR 3 2016
1,2,4-Trichlorobenzene MR 2 2000
cis-1,2-Dichloroethylene MR 2 2000
Xylenes, Total MR 2 2000
p-Dichlorobenzene MR 2 2000
1,1-Dichloroethylene MR 2 2000
trans-1,2-Dichloroethylene MR 2 2000
1,1,1-Trichloroethane MR 2 2000
Carbon tetrachloride MR 2 2000
Trichloroethylene MR 2 2000
Tetrachloroethylene MR 2 2000
Ethylbenzene MR 2 2000
Styrene MR 2 2000
Consumer Confidence Rule Other 2 2001
E. COLI MR 2 2011
LASSO MR 2 2018
Carbofuran MR 2 2018
Chlordane MR 2 2018
2,4-D MR 2 2018
Heptachlor epoxide MR 2 2018
Pentachlorophenol MR 2 2018
BHC-GAMMA MR 2 2018
Dalapon MR 2 2018
Di(2-ethylhexyl) adipate MR 2 2018
Diquat MR 2 2018
Endothall MR 2 2018
HEXACHLOROBENZENE MR 2 2018
Picloram MR 2 2018
Coliform (TCR) MCL 2 2012

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Granville Centre Water Co.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID MA1112000 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Massachusetts Drinking Water Authority

MassDEP, Drinking Water Program is the primacy agency that licenses and inspects Granville Centre Water Co under EPA-delegated authority.

Open MA regulator portal

Source: MassDEP, Drinking Water Program

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2018 LASSO MR 2 SDWIS / MA1112000 / 2051
2018 Carbofuran MR 2 SDWIS / MA1112000 / 2046
2018 Chlordane MR 2 SDWIS / MA1112000 / 2959
2018 2,4-D MR 2 SDWIS / MA1112000 / 2105
2018 Heptachlor epoxide MR 2 SDWIS / MA1112000 / 2067
2018 Pentachlorophenol MR 2 SDWIS / MA1112000 / 2326
2018 BHC-GAMMA MR 2 SDWIS / MA1112000 / 2010
2018 Dalapon MR 2 SDWIS / MA1112000 / 2031
2018 Di(2-ethylhexyl) adipate MR 2 SDWIS / MA1112000 / 2035
2018 Diquat MR 2 SDWIS / MA1112000 / 2032
2018 Endothall MR 2 SDWIS / MA1112000 / 2033
2018 HEXACHLOROBENZENE MR 2 SDWIS / MA1112000 / 2274
2018 Picloram MR 2 SDWIS / MA1112000 / 2040
2018 1,2-DIBROMO-3-CHLOROPROPANE MR 2 SDWIS / MA1112000 / 2931
2018 Hexachlorocyclopentadiene MR 2 SDWIS / MA1112000 / 2042

How Granville Centre Water Co Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Granville Centre Water Co Massachusetts avg Federal benchmark
Total violations 138 46.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 2 4.6 Indicates a contaminant exceeded a federal MCL
PFAS detection None 54.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 70 6,462 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,599 regulated public water systems in Massachusetts.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Granville Centre Water Co water safe to drink? ▼
Granville Centre Water Co (PWS ID: MA1112000) has 138 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 70 people using Groundwater sources.
How many people does Granville Centre Water Co serve? ▼
Granville Centre Water Co serves 70 people in Granville, Massachusetts. It is a Private-owned system using Groundwater water sources with 30 service connections.
What type of violations does Granville Centre Water Co have? ▼
Granville Centre Water Co has 138 total violations: 2 health-based violations (MCL exceedances or treatment failures), 113 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Granville Centre Water Co water? ▼
No PFAS testing data is available for Granville Centre Water Co under the EPA's UCMR5 monitoring program.
What water source does Granville Centre Water Co use? ▼
Granville Centre Water Co uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.