Tap Water Quality Report
Tap water quality in SANDWICH, Massachusetts
Tap water in SANDWICH, Massachusetts receives a grade of A (95/100) from TapWaterSafety.org. It's served by UPPER CAPE REGIONAL WATER COOPERATIVE. The most significant water quality concerns are: Chromium (hexavalent) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in SANDWICH's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving SANDWICH.
Chromium (hexavalent) significantly above health guideline
Moderate concernChromium (hexavalent) detected at 0.251 ppb, 13x above the EWG health guideline of 0.02 ppb.
EPA compliance record
Official U.S. EPA records for UPPER CAPE REGIONAL WATER COOPERATIVE (system ID MA4261024) for the last 3 years. Checked 2026-10-07.
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 SANDWICH
Filters matched to the specific contaminants in SANDWICH's water supply.
Carbon block filter certified to NSF/ANSI 42 + 53
$180-$599A certified carbon block filter handles most baseline water quality concerns.
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 SANDWICH'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 |
|---|---|---|---|---|---|---|---|---|
| Chromium (hexavalent) Heavy metal |
0.251 ppb | 0.02 | — | — | — | — | — | 13× over |
| Chloroform Disinfection byproduct |
1.91 ppb | 0.4 | — | — | — | — | — | 4.8× over |
| Nitrate Inorganic |
0.095 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.661 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.0384 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.022 ppb | 1500.0 | — | — | — | — | — | 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 UPPER CAPE REGIONAL WATER COOPERATIVE.