Tap Water Quality Report
Tap water quality in WEYMOUTH, Massachusetts
Tap water in WEYMOUTH, Massachusetts receives a grade of F (53/100) from TapWaterSafety.org. It's served by WEYMOUTH WATER DEPARTMENT. 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. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in WEYMOUTH's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving WEYMOUTH.
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.
EPA compliance record
Official U.S. EPA records for WEYMOUTH WATER DEPARTMENT (system ID MA4336000) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Lead and Copper Rule | Missed testing or reporting | 01/01/2023 | Resolved |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for WEYMOUTH
Filters matched to the specific contaminants in WEYMOUTH's 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.
All contaminants detected in WEYMOUTH's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. 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, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from WEYMOUTH WATER DEPARTMENT.