Water Quality Report · Updated October 07, 2026
BROCKTON WATER DEPARTMENT
BROCKTON WATER DEPARTMENT delivers tap water graded F (52/100) by TapWaterSafety.org. The utility serves approximately 105,643 residents in BROCKTON, Massachusetts using surface water. The most significant water quality concerns are: PFAS contamination; Perfluorohexane sulfonate (PFHXS) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. For questions, the utility can be reached at 5085807825.
Is BROCKTON tap water safe to drink?
BROCKTON WATER DEPARTMENT delivers tap water that earns a grade of F (52/100) from TapWaterSafety.org — a poor rating, with significant contamination concerns and/or recent violations.
The utility serves 105,643 residents in BROCKTON, drawing from surface water. Despite being legal under US EPA standards, this water would fail the European Union's Drinking Water Directive, primarily due to pfas contamination.
Public testing data identifies 16 contaminants in this water above EWG's health-based guidelines, including: Perfluorooctanoic acid (PFOA), Perfluorooctane sulfonate (PFOS), Perfluorohexane sulfonate (PFHXS), Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Haloacetic acids (HAA5), Bromodichloromethane, Perfluorononanoic acid (PFNA), Trichloroacetic acid, Chloroform, Dibromochloromethane, Dichloroacetic acid, Perfluorodecanoic acid (PFDA), Dibromoacetic acid, Bromoform, Nitrate. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
EPA compliance record
Official U.S. EPA records for BROCKTON WATER DEPARTMENT (system ID MA4044000) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Consumer Confidence Rule | Other (e.g. public notice) | 07/01/2023 | Resolved |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Quick actions for BROCKTON residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for BROCKTON WATER DEPARTMENT.
PFAS contamination
Severe concernPerfluorononanoic acid (PFNA), Perfluorooctane sulfonate (PFOS) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 1.51 ppt, 1510x above the EWG health guideline of 0.001 ppt.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 36.4 ppb, 607x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 43.3 ppb, 289x above the EWG health guideline of 0.15 ppb.
Contact BROCKTON WATER DEPARTMENT
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for BROCKTON
Filters matched to the specific contaminants in this water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 52/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) PFAS |
4.17 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | EPA violation |
| Perfluorooctane sulfonate (PFOS) PFAS |
4.56 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | EPA violation |
| Perfluorohexane sulfonate (PFHXS) PFAS |
1.51 ppt | 0.001 | 10.0 | — | — | — | — | 1510× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
36.4 ppb | 0.06 | — | — | — | — | — | 607× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
43.3 ppb | 0.15 | 80.0 | 100 | — | — | — | 289× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
19.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 192× over |
| Bromodichloromethane Disinfection byproduct |
10.7 ppb | 0.06 | — | — | — | — | — | 179× over |
| Perfluorononanoic acid (PFNA) PFAS |
1.04 ppt | 0.006 | 10.0 | — | — | — | — | 173× over |
| Trichloroacetic acid Disinfection byproduct |
10.7 ppb | 0.1 | — | — | — | — | — | 107× over |
| Chloroform Disinfection byproduct |
26.6 ppb | 0.4 | — | — | — | — | — | 67× over |
| Dibromochloromethane Disinfection byproduct |
4.09 ppb | 0.1 | — | — | — | — | — | 41× over |
| Dichloroacetic acid Disinfection byproduct |
7.12 ppb | 0.2 | — | — | — | — | — | 36× over |
| Perfluorodecanoic acid (PFDA) PFAS |
0.208 ppt | 0.006 | — | — | — | — | — | 35× over |
| Dibromoacetic acid Disinfection byproduct |
0.307 ppb | 0.03 | — | — | — | — | — | 10× over |
| Bromoform Disinfection byproduct |
0.774 ppb | 0.5 | — | — | — | — | — | 1.5× over |
| Nitrate Inorganic |
0.211 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.5× over |
| Chlorate Disinfection byproduct |
166.4 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Chloromethane Other |
2.13 ppb | 2.69 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
67.5 ppb | 100.0 | — | 50 | 80 | — | — | Fails EU |
| Chromium (hexavalent) Heavy metal |
0.00925 ppb | 0.02 | — | — | — | — | — | Below guideline |
| N-ethyl perfluorooctane sulfonamido acetic acid (N-EtFOSAA) PFAS |
0.116 ppt | 1.0 | — | — | — | — | — | Below guideline |
| Perchlorate Disinfection byproduct |
0.082 ppb | 1.0 | — | — | — | — | — | Below guideline |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) PFAS |
0.039 ppt | 1.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
20.5 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
1.09 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Aluminum Heavy metal |
10.0 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
2.95 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA) PFAS |
1.84 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
1.19 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0681 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Alpha-hexachlorocyclohexane Radiological |
0.00163 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
BROCKTON WATER DEPARTMENT service area
This water system serves 1 community in Plymouth County, Massachusetts. Click any city for its dedicated tap water quality page.
Find the right filter for BROCKTON water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.