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State profile · EPA SDWIS + UCMR5

US Virgin Islands Drinking Water Quality

256 public water systems serve 122,604 people across US Virgin Islands, with every Safe Drinking Water Act violation and UCMR5 PFAS result on record.

256
Water systems
1,317
Total violations
83.6%
Systems w/ a violation
33.3%
PFAS detection rate

The verdict

Across US Virgin Islands, 214 of 256 water systems (83.6%) carry at least one EPA violation, and 1 of 3 UCMR5-tested systems show PFAS.

1,317
Total EPA violations on record
18%
Health-based (MCL / treatment)
83.6%
Systems with ≥1 violation
33.3%
UCMR5 PFAS detection rate
Water Systems
256
Total Violations
1,317
Violation Rate
83.6%
PFAS Detection
33.3%
1 of 3 tested

Violation Composition

How US Virgin Islands's 1,317 violations break down by type, per EPA SDWIS classification.

Health-based (236) Monitoring/Reporting (1,081)
Metric Value Share
Public water systems256-
Population served122,604-
Total violations1,317100%
Health-based violations23617.9%
Systems with violations21483.6%
PFAS detection rate1 of 333.3%

Health-based violations indicate the contaminant exceeded an EPA Maximum Contaminant Level (MCL) or treatment-technique requirement. Monitoring/reporting violations indicate procedural issues (missed tests, late reports) - not necessarily a contamination event.

Largest Water Systems

Water And Power Authority - STX
Christiansted, VI · 35,000 served
14 violations
Water And Power Authority - STT
Christiansted, VI · 34,000 served
9 violations
VI Port Authority (Airport)
VI · 2,500 served
4 violations
Ocean Point Terminals
VI · 2,500 served
3 violations
Cinema One Market Square East
VI · 1,035 served
Lorraine Village
VI · 1,008 served
12 violations
Ivanna Eudora Kean High
VI · 1,000 served
13 violations
Charlotte Amalie High
VI · 978 served
12 violations
St. Croix Educational Complex
VI · 974 served
5 violations
Bovoni Housing Project I and II
Charlotte Amalie, VI · 960 served
13 violations
Mcdonalds La Reine
VI · 958 served
8 violations
Pueblo Golden Rock
VI · 954 served
10 violations
United Corp. Supermarket
VI · 940 served
3 violations
Sunny Isle Shopping Center
VI · 920 served
11 violations
UVI St.Thomas
VI · 900 served
7 violations
Univ. Of The VI - Evan Bldg.
VI · 900 served
4 violations
The Market St. Croix
VI · 900 served
2 violations
Juan Luis Hospital
VI · 888 served
13 violations
West Indian Company
St. Thomas, VI · 880 served
7 violations
Harbour View Apartments
VI · 863 served
14 violations

Most Violations

#1 Herbert Grigg Kitchen
33
#2 The Good Hope Country Day School
28
#3 Chenay Bay Beach Resort
22
#4 The Golden Twin Apt.s (bay Court-n)
21
#5 St. Joseph High School
20
#6 Herbert Grigg LTC
20
#7 Villa La Reine Shopping Center
19
#8 Carambola Golf Course
17
#9 Good Hope Townhouses Fredricksted
16
#10 Gentle Winds Resort A-B Christiansted
15
#11 Long Reef Apartments
14
#12 Mill Harbour Condos
14
#13 Harbour View Apartments
14
#14 Water And Power Authority - STX Christiansted
14
#15 Bovoni Housing Project I and II Charlotte Amalie
13

Counties in US Virgin Islands

St. Croix Island
131 systems · 61,668 served · 878 violations
St. Thomas Island
112 systems · 58,003 served · 416 violations
St. John Island
10 systems · 2,228 served · 22 violations
View all 256 systems in US Virgin Islands →

Drinking Water Guides

Is Your Tap Water Safe?

How to interpret water quality reports and know when to take action.
PFAS in Drinking Water

What forever chemicals are, EPA testing results, and 2024 standards.
Check Your Water System

Step-by-step guide to finding and understanding your local water data.

Frequently Asked Questions

How many water systems are in US Virgin Islands? ▼
US Virgin Islands has 256 public water systems serving approximately 122,604 people. These include community water systems, non-transient non-community systems, and transient non-community systems regulated under the Safe Drinking Water Act.
How many drinking water violations are in US Virgin Islands? ▼
US Virgin Islands has 1,317 total drinking water violations on record, with 236 classified as health-based violations. 83.6% of water systems in the state have at least one violation.
Has PFAS been found in US Virgin Islands drinking water? ▼
Of 3 water systems tested for PFAS in US Virgin Islands, 1 had PFAS detected, a 33.3% detection rate. PFAS are persistent "forever chemicals" that do not break down in the environment.
What is the violation rate for US Virgin Islands water systems? ▼
US Virgin Islands's violation rate is 83.6%. This measures the percentage of public water systems that have at least one recorded violation in the EPA SDWIS database, including both health-based and monitoring/reporting violations.
Where does this US Virgin Islands water data come from? ▼
All drinking water data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS is the federal database that tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Read our methodology - how this data is sourced, computed, and verified.

Related

All states → | Most violations → | Compare counties →
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.