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Transient Non-Community Water System · PWS MA4318065

Bobs Sub and Cone

South Wellfleet, Massachusetts 02663 - drinking water served from groundwater sources to 25 people, tracked in EPA SDWIS and UCMR5.

25
People served
95
EPA violations
4
Health-based
Untested
UCMR5 result

The verdict

EPA records 95 drinking-water violations at Bobs Sub and Cone, 4% of them health-based - above the Massachusetts per-system average.

95
Total EPA violations on record
4%
Health-based (MCL / treatment failure)
25
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Bobs Sub and Cone

Bobs Sub and Cone is a private-owned transient non-community water system that delivers drinking water to 25 residents in South Wellfleet, Massachusetts (Barnstable County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 95 total violations for this system , of which 4 (4%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 45 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Revised Total Coliform Rule, recorded in 34 violations (RPT). 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%).

Bobs Sub and Cone's 95 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
25
Total Violations
95
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Private
Connections
1
County
Barnstable
School/Daycare
No
MCL Violations
4
Monitoring Violations
45
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule RPT 34 2024
Revised Total Coliform Rule MON 19 2024
Coliform (TCR) MR 18 2015
Nitrate MR 7 2011
Coliform (TCR) MCL 4 2010
Public Notice Other 2 2010
Nitrite MR 1 1994

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 Bobs Sub and Cone.

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 MA4318065 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 Bobs Sub and Cone 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
2024 Revised Total Coliform Rule RPT 34 SDWIS / MA4318065 / 8000
2024 Revised Total Coliform Rule MON 19 SDWIS / MA4318065 / 8000
2015 Coliform (TCR) MR 18 SDWIS / MA4318065 / 3100
2011 Nitrate MR 7 SDWIS / MA4318065 / 1040
2010 Coliform (TCR) MCL 4 SDWIS / MA4318065 / 3100
2010 Public Notice Other 2 SDWIS / MA4318065 / 7500
1994 Nitrite MR 1 SDWIS / MA4318065 / 1041

How Bobs Sub and Cone Compares

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

Metric Bobs Sub and Cone Massachusetts avg Federal benchmark
Total violations 95 46.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 4 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 25 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 Bobs Sub and Cone water safe to drink? ▼
Bobs Sub and Cone (PWS ID: MA4318065) has 95 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 25 people using Groundwater sources.
How many people does Bobs Sub and Cone serve? ▼
Bobs Sub and Cone serves 25 people in South Wellfleet, Massachusetts. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Bobs Sub and Cone have? ▼
Bobs Sub and Cone has 95 total violations: 4 health-based violations (MCL exceedances or treatment failures), 45 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Bobs Sub and Cone water? ▼
No PFAS testing data is available for Bobs Sub and Cone under the EPA's UCMR5 monitoring program.
What water source does Bobs Sub and Cone use? ▼
Bobs Sub and Cone uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.