PlainWater
Counties → Massachusetts

Norfolk County, Massachusetts

Water Systems
57
Population Served
842,114
Total Violations
2,645
480 health-based
PFAS Detected
22
of 27 tested

Violation Analysis

93.0%
Systems with Violations
46.4
Avg Violations per System
18.1%
Health-Based Violations

Water Source Types

GW
30 systems (53%)
SW
20 systems (35%)

PFAS Contamination

27
Systems Tested
22
PFAS Detected
81.5%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Norfolk Massachusetts water systems by violation status, EPA SDWIS records.

No violations on record (2) One or more violations (48)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Quincy Water Dept. (Mwra) 106,000 14 Clean
Brookline Water and Sewer Division 63,191 16 Clean
Weymouth Water Department 57,613 50 Detected
Randolph/Holbrook Joint Water Board 45,767 16 -
Dedham Westwood Water Dist. 41,630 11 Detected
Braintree Water and Sewer Dept. 39,143 98 Detected
Randolph Water Department 34,362 27 Detected
Bluedrop Water @ Randolph Dpw 34,362 7 -
Bluedrop Water @ St Bernadette Church 34,362 0 -
Franklin Water Department 33,399 44 Detected
Needham Water Dept 33,130 118 Detected
Norwood Water Dept. (Mwra) 29,909 25 Clean
Wellesley Water Division 29,550 15 Detected
Stoughton Water Department 29,281 45 Detected
Milton Water Dept. (Mwra) 28,630 13 Clean
Walpole Water Dept 24,070 67 Detected
Canton Water Dept 22,453 38 Detected
Foxboro Water Department 18,639 100 Detected
Sharon Water Dept 16,991 13 Detected
Bellingham Dpw Water Sewer Division 16,061 78 Detected
Medway Water Department 13,115 370 Detected
Medfield Water Dept. 12,894 135 Detected
Wrentham Water Division 11,795 125 Detected
Holbrook Public Works Dept 11,405 47 Detected
Millis Water Dept 9,002 98 Detected
Plainville Water Department 8,805 62 Detected
Norfolk Water Division 7,602 327 Detected
Cohasset Water Dept 7,555 64 Detected
Town of Avon 4,777 92 Detected
Wellesley College 3,000 33 -
Hale Education, Inc. 3,000 5 -
McI Norfolk/Cedar Junction/Walpole 2,200 19 Clean
Aquarion Water Company (Dover) 1,922 43 -
Southfield Redevelopement Authority 1,800 1 -
Blue Hills Spring Water 1,500 0 -
Wrentham Developmental Center 937 22 -
Dover Water Dept 500 86 -
Old Colony YMCA Stoughton 475 13 -
Wentworth Hills Golf Club 250 9 -
Camp Haiastan 200 35 -
Glen Ridge Residents Trust 135 28 -
Aquarion Water Co. (Springdale Farms) 126 34 -
Powisset Farm 100 4 -
Mount St Marys Abbey 60 90 -
Meadowbrook Water Trust 57 26 -
Bishops Landing Condominiums 50 25 -
Precious Beginnings 44 2 -
Old Farm Road Water Trust 40 42 -
Primo Water @ Wal Mart #2122 25 2 -
Tri Town Water Board 25 2 -

Other Counties in Massachusetts

Suffolk County
8 systems · 3,456,243 served · 111 violations
Middlesex County
204 systems · 1,623,176 served · 16,575 violations
Essex County
67 systems · 908,499 served · 3,080 violations
Worcester County
345 systems · 773,172 served · 23,751 violations
Bristol County
133 systems · 673,471 served · 3,611 violations
Barnstable County
127 systems · 628,756 served · 2,953 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Norfolk County? ▼
Norfolk County has 2,645 total drinking water violations across 57 water systems, of which 480 are health-based violations. 93.0% of systems have at least one violation.
How many people get water from Norfolk County systems? ▼
Water systems in Norfolk County serve approximately 842,114 people through 57 public water systems.
Has PFAS been detected in Norfolk County water? ▼
Of 27 water systems tested for PFAS in Norfolk County, 22 had PFAS detected (81.5% detection rate).
What types of water sources supply Norfolk County? ▼
Water systems in Norfolk County use GW (30 systems), SW (20 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 18.1% of Norfolk County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

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 page draws directly on 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.