Water Quality Report · Updated October 07, 2026
UPPER CAPE REGIONAL WATER COOPERATIVE
UPPER CAPE REGIONAL WATER COOPERATIVE delivers tap water graded A (95/100) by TapWaterSafety.org. The utility serves approximately 56,250 residents in SANDWICH, Massachusetts using groundwater. The most significant water quality concerns are: Chromium (hexavalent) significantly above health guideline. For questions, the utility can be reached at 5088882775.
Is SANDWICH tap water safe to drink?
UPPER CAPE REGIONAL WATER COOPERATIVE delivers tap water that earns a grade of A (95/100) from TapWaterSafety.org — an excellent rating reflecting minimal contamination and full compliance with health guidelines.
The utility serves 56,250 residents in SANDWICH, drawing from groundwater.
Public testing data identifies 2 contaminants in this water above EWG's health-based guidelines, including: Chromium (hexavalent), Chloroform. 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 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.
Quick actions for SANDWICH residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for UPPER CAPE REGIONAL WATER COOPERATIVE.
Chromium (hexavalent) significantly above health guideline
Moderate concernChromium (hexavalent) detected at 0.251 ppb, 13x above the EWG health guideline of 0.02 ppb.
Contact UPPER CAPE REGIONAL WATER COOPERATIVE
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 SANDWICH
Filters matched to the specific contaminants in this 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.
Score breakdown
This utility's overall score of 95/100 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 |
|---|---|---|---|---|---|---|---|---|
| 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
UPPER CAPE REGIONAL WATER COOPERATIVE service area
This water system serves 1 community in Barnstable County, Massachusetts. Click any city for its dedicated tap water quality page.
Find the right filter for SANDWICH water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.