Great Barrington, MA Tap Water Quality 2026

Water quality report for Great Barrington, MA — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Great Barrington's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Great Barrington Fire Dist PWSID: MA1113000 Updated: 2026 Q2

✅

No federal limits exceeded on record

Lead is 2.90 ppb, 19% of the action level and no violations are open. No PFAS was detected.

Great Barrington earns a B for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 2.90 ppb — 19% of the federal action level

PFAS tested, none detected

65 violations since 2015, 3 health-based

No violations currently open

Great Barrington's lead level vs. all Massachusetts community water systems

0 ppb5 ppb10 ppb15 ppb

Lead level: 2.90 ppb — 19% of the federal action level

✓ Lower lead than 45% of Massachusetts utilities

Population Served

4152

~1728 connections

Water Source

Groundwater

Drawn from wells — SDWIS source code GW

Active Violations

65 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)

90th percentile of tap samples collected across the distribution system

19% of EPA action level

2.90 ppb

Action level: 15 ppb

The 90th-percentile lead result is 2.90 ppb, 19% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

Contaminant	Type	Measured	Limit	Period	Status
LASSO	MONITORING AND REPORTING	—	—	2018	Resolved
Atrazine	MONITORING AND REPORTING	—	0.003 mg/L	2018	Resolved
Carbofuran	MONITORING AND REPORTING	—	0.04 mg/L	2018	Resolved
Chlordane	MONITORING AND REPORTING	—	0.002 mg/L	2018	Resolved
2,4-D	MONITORING AND REPORTING	—	0.07 mg/L	2018	Resolved
Endrin	MONITORING AND REPORTING	—	0.002 mg/L	2018	Resolved
ETHYLENE DIBROMIDE	MONITORING AND REPORTING	—	0.00005 mg/L	2018	Resolved
Heptachlor epoxide	MONITORING AND REPORTING	—	0.0002 mg/L	2018	Resolved
Heptachlor	MONITORING AND REPORTING	—	0.0004 mg/L	2018	Resolved
Pentachlorophenol	MONITORING AND REPORTING	—	0.001 mg/L	2018	Resolved
Toxaphene	MONITORING AND REPORTING	—	0.003 mg/L	2018	Resolved
2,4,5-TP	MONITORING AND REPORTING	—	0.05 mg/L	2018	Resolved
Methoxychlor	MONITORING AND REPORTING	—	0.04 mg/L	2018	Resolved
BHC-GAMMA	MONITORING AND REPORTING	—	0.0002 mg/L	2018	Resolved
Total Polychlorinated Biphenyls (PCB)	MONITORING AND REPORTING	—	0.0005 mg/L	2018	Resolved
1,2-DIBROMO-3-CHLOROPROPANE	MONITORING AND REPORTING	—	0.0002 mg/L	2018	Resolved
Benzo(a)pyrene	MONITORING AND REPORTING	—	0.0002 mg/L	2018	Resolved
Dalapon	MONITORING AND REPORTING	—	0.2 mg/L	2018	Resolved
Di(2-ethylhexyl) adipate	MONITORING AND REPORTING	—	0.4 mg/L	2018	Resolved
Di(2-ethylhexyl) phthalate	MONITORING AND REPORTING	—	0.006 mg/L	2018	Resolved
Dinoseb	MONITORING AND REPORTING	—	0.007 mg/L	2018	Resolved
Diquat	MONITORING AND REPORTING	—	0.02 mg/L	2018	Resolved
Endothall	MONITORING AND REPORTING	—	0.1 mg/L	2018	Resolved
Glyphosate	MONITORING AND REPORTING	—	0.7 mg/L	2018	Resolved
HEXACHLOROBENZENE	MONITORING AND REPORTING	—	0.001 mg/L	2018	Resolved
Hexachlorocyclopentadiene	MONITORING AND REPORTING	—	0.05 mg/L	2018	Resolved
OXAMYL	MONITORING AND REPORTING	—	0.2 mg/L	2018	Resolved
Picloram	MONITORING AND REPORTING	—	0.5 mg/L	2018	Resolved
Simazine	MONITORING AND REPORTING	—	0.004 mg/L	2018	Resolved
2,3,7,8-TCDD	MONITORING AND REPORTING	—	0.00000003 mg/L	2018	Resolved
Stage 1 Disinfectants and Disinfection Byproducts Rule	TREATMENT TECHNIQUE	—	—	2018	Resolved
Stage 1 Disinfectants and Disinfection Byproducts Rule	TREATMENT TECHNIQUE	—	—	2017	Resolved
Stage 1 Disinfectants and Disinfection Byproducts Rule	TREATMENT TECHNIQUE	—	—	2016	Resolved
LASSO	MONITORING AND REPORTING	—	—	2015	Archived
Atrazine	MONITORING AND REPORTING	—	0.003 mg/L	2015	Archived
Carbofuran	MONITORING AND REPORTING	—	0.04 mg/L	2015	Archived
Chlordane	MONITORING AND REPORTING	—	0.002 mg/L	2015	Archived
2,4-D	MONITORING AND REPORTING	—	0.07 mg/L	2015	Archived
Endrin	MONITORING AND REPORTING	—	0.002 mg/L	2015	Archived
ETHYLENE DIBROMIDE	MONITORING AND REPORTING	—	0.00005 mg/L	2015	Archived
Heptachlor epoxide	MONITORING AND REPORTING	—	0.0002 mg/L	2015	Archived
Heptachlor	MONITORING AND REPORTING	—	0.0004 mg/L	2015	Archived
Pentachlorophenol	MONITORING AND REPORTING	—	0.001 mg/L	2015	Archived
Toxaphene	MONITORING AND REPORTING	—	0.003 mg/L	2015	Archived
2,4,5-TP	MONITORING AND REPORTING	—	0.05 mg/L	2015	Archived
Methoxychlor	MONITORING AND REPORTING	—	0.04 mg/L	2015	Archived
BHC-GAMMA	MONITORING AND REPORTING	—	0.0002 mg/L	2015	Archived
Total Polychlorinated Biphenyls (PCB)	MONITORING AND REPORTING	—	0.0005 mg/L	2015	Archived
1,2-DIBROMO-3-CHLOROPROPANE	MONITORING AND REPORTING	—	0.0002 mg/L	2015	Archived
Benzo(a)pyrene	MONITORING AND REPORTING	—	0.0002 mg/L	2015	Archived
Dalapon	MONITORING AND REPORTING	—	0.2 mg/L	2015	Archived
Di(2-ethylhexyl) adipate	MONITORING AND REPORTING	—	0.4 mg/L	2015	Archived
Di(2-ethylhexyl) phthalate	MONITORING AND REPORTING	—	0.006 mg/L	2015	Archived
Dinoseb	MONITORING AND REPORTING	—	0.007 mg/L	2015	Archived
Diquat	MONITORING AND REPORTING	—	0.02 mg/L	2015	Archived
Endothall	MONITORING AND REPORTING	—	0.1 mg/L	2015	Archived
Glyphosate	MONITORING AND REPORTING	—	0.7 mg/L	2015	Archived
HEXACHLOROBENZENE	MONITORING AND REPORTING	—	0.001 mg/L	2015	Archived
Hexachlorocyclopentadiene	MONITORING AND REPORTING	—	0.05 mg/L	2015	Archived
OXAMYL	MONITORING AND REPORTING	—	0.2 mg/L	2015	Archived
Picloram	MONITORING AND REPORTING	—	0.5 mg/L	2015	Archived
Simazine	MONITORING AND REPORTING	—	0.004 mg/L	2015	Archived
2,3,7,8-TCDD	MONITORING AND REPORTING	—	0.00000003 mg/L	2015	Archived
Nitrate	MONITORING AND REPORTING	—	10 mg/L	2015	Resolved
Lead and Copper Rule	MONITORING AND REPORTING	—	TT	2015	Resolved

Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

65 violations are on record since 2015, of which 3 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Great Barrington Fire Dist

PWSID MA1113000

Water source Groundwater — Drawn from wells — SDWIS source code GW

Population served 4,152

Service connections 1,728

Systems serving this area 4

Regulator State primacy agency

Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Great Barrington tap water safe to drink? ▼

No federal limit is exceeded on record. No violations are currently open. Lead is 2.90 ppb, 19% of the action level.

Does Great Barrington water have PFAS? ▼

It was tested for the six regulated PFAS compounds and none were detected.

Who supplies water to Great Barrington? ▼

Great Barrington Fire Dist (PWSID MA1113000), one of 4 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW

When was this system last inspected? ▼

It was last inspected on 2023-05-12. No significant deficiencies were recorded.

What Should Great Barrington Residents Do?

Read your annual water report

Your supplier publishes a Consumer Confidence Report each July covering the prior year.

Check for a lead service line

Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.

Flush before drinking

If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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