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Non-Transient Non-Community Water System · PWS MA4250003

Old Colony Reg.voc.tech. High Sch.

Rochester, Massachusetts 02770 - drinking water served from groundwater sources to 400 people, tracked in EPA SDWIS and UCMR5.

400
People served
15
EPA violations
11
Health-based
Untested
UCMR5 result

The verdict

EPA records 15 drinking-water violations at Old Colony Reg.voc.tech. High Sch., 73% of them health-based - below the Massachusetts per-system average.

15
Total EPA violations on record
73%
Health-based (MCL / treatment failure)
400
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Old Colony Reg.voc.tech. High Sch.

Old Colony Reg.voc.tech. High Sch. is a local-owned non-transient non-community water system that delivers drinking water to 400 residents in Rochester, Massachusetts (Plymouth County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 15 total violations for this system , of which 11 (73%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 4 monitoring and reporting violations are on file. The most recent violation on record dates to 2010.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 11 violations (MCL, health-based). 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, 148 of 263 UCMR5-tested systems have reported PFAS detections (56.3%).

Old Colony Reg.voc.tech. High Sch.'s 15 violations sit below 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
400
Total Violations
15
Health-Based Violations
11
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Plymouth
School/Daycare
Yes
MCL Violations
11
Monitoring Violations
4
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 11 2010
Lead and Copper Rule MR 2 1997
Coliform (TCR) MR 1 2003
Nitrate 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 Old Colony Reg.voc.tech. High Sch..

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 MA4250003 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 Old Colony Reg.voc.tech. High Sch. 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
2010 Coliform (TCR) MCL 11 SDWIS / MA4250003 / 3100
2003 Coliform (TCR) MR 1 SDWIS / MA4250003 / 3100
1997 Lead and Copper Rule MR 2 SDWIS / MA4250003 / 5000
1994 Nitrate MR 1 SDWIS / MA4250003 / 1040

How Old Colony Reg.voc.tech. High Sch. Compares

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

Metric Old Colony Reg.voc.tech. High Sch. Massachusetts avg Federal benchmark
Total violations 15 46.2 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 11 4.6 Indicates a contaminant exceeded a federal MCL
PFAS detection None 56.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 400 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 Old Colony Reg.voc.tech. High Sch. water safe to drink? ▼
Old Colony Reg.voc.tech. High Sch. (PWS ID: MA4250003) has 15 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 400 people using Groundwater sources.
How many people does Old Colony Reg.voc.tech. High Sch. serve? ▼
Old Colony Reg.voc.tech. High Sch. serves 400 people in Rochester, Massachusetts. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does Old Colony Reg.voc.tech. High Sch. have? ▼
Old Colony Reg.voc.tech. High Sch. has 15 total violations: 11 health-based violations (MCL exceedances or treatment failures), 4 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Old Colony Reg.voc.tech. High Sch. water? ▼
No PFAS testing data is available for Old Colony Reg.voc.tech. High Sch. under the EPA's UCMR5 monitoring program.
What water source does Old Colony Reg.voc.tech. High Sch. use? ▼
Old Colony Reg.voc.tech. High Sch. uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.