Water Quality Report · Updated May 12, 2026
WEYMOUTH WATER DEPARTMENT
WEYMOUTH WATER DEPARTMENT delivers tap water graded F (50/100) by TapWaterSafety.org. The utility serves approximately 57,613 residents in WEYMOUTH, 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 7813375100.
Is WEYMOUTH tap water safe to drink?
WEYMOUTH WATER DEPARTMENT delivers tap water that earns a grade of F (50/100) from TapWaterSafety.org — a poor rating, with significant contamination concerns and/or recent violations.
The utility serves 57,613 residents in WEYMOUTH, drawing from surface water.
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), Bromodichloromethane, Haloacetic acids (HAA5), Perfluorononanoic acid (PFNA), Dibromochloromethane, Chloroform, Trichloroacetic acid, Dichloroacetic acid, Dibromoacetic acid, Perfluorodecanoic acid (PFDA), Chromium (hexavalent), 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.
Quick actions for WEYMOUTH residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for WEYMOUTH 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 2.53 ppt, 2525x above the EWG health guideline of 0.001 ppt.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 17.7 ppb, 295x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 36.3 ppb, 242x above the EWG health guideline of 0.15 ppb.
Contact WEYMOUTH 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 WEYMOUTH
Filters matched to the specific contaminants in this water supply.
Reverse Osmosis or NSF P473 certified carbon
$80-$750Activated carbon and RO are the only technologies proven to remove PFAS at certified levels.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
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 50/100 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 |
5.09 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | EPA violation |
| Perfluorooctane sulfonate (PFOS) PFAS |
4.43 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | EPA violation |
| Perfluorohexane sulfonate (PFHXS) PFAS |
2.53 ppt | 0.001 | 10.0 | — | — | — | — | 2525× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
17.7 ppb | 0.06 | — | — | — | — | — | 295× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
36.3 ppb | 0.15 | 80.0 | 100 | — | — | — | 242× over |
| Bromodichloromethane Disinfection byproduct |
9.61 ppb | 0.06 | — | — | — | — | — | 160× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
9.53 ppb | 0.1 | 60.0 | 60 | — | — | — | 95× over |
| Perfluorononanoic acid (PFNA) PFAS |
0.423 ppt | 0.006 | 10.0 | — | — | — | — | 71× over |
| Dibromochloromethane Disinfection byproduct |
5.43 ppb | 0.1 | — | — | — | — | — | 54× over |
| Chloroform Disinfection byproduct |
16.9 ppb | 0.4 | — | — | — | — | — | 42× over |
| Trichloroacetic acid Disinfection byproduct |
3.76 ppb | 0.1 | — | — | — | — | — | 38× over |
| Dichloroacetic acid Disinfection byproduct |
5.09 ppb | 0.2 | — | — | — | — | — | 25× over |
| Dibromoacetic acid Disinfection byproduct |
0.563 ppb | 0.03 | — | — | — | — | — | 19× over |
| Perfluorodecanoic acid (PFDA) PFAS |
0.086 ppt | 0.006 | — | — | — | — | — | 14× over |
| Chromium (hexavalent) Heavy metal |
0.0778 ppb | 0.02 | — | — | — | — | — | 3.9× over |
| Nitrate Inorganic |
0.203 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.4× over |
| Bromoform Disinfection byproduct |
0.376 ppb | 0.5 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
17.6 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Chlorate Disinfection byproduct |
15.1 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
16.3 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
3.58 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA) PFAS |
2.44 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
1.55 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.0654 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
2.21 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.0156 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0738 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.644 ppm | — | 4.0 | 1.5 | 1.5 | — | — | 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.
WEYMOUTH WATER DEPARTMENT service area
This water system serves 1 community in Norfolk County, Massachusetts. Click any city for its dedicated tap water quality page.
Find the right filter for WEYMOUTH water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.