PlainEnviro

Saipan Water Quality

Northern Mariana Islands

Health Violations

According to EPA SDWIS, Saipan, Northern Mariana Islands is served by 32 community water systems covering about 62,636 people. The same extract lists 168 health-based violation records, most recently coded 0700 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.

32
Water Systems
62,636
Population Served
168
Health-Based Violation Records
4
Distinct Contaminant Codes

Drinking water in Saipan, Northern Mariana Islands is delivered through 32 EPA-regulated community water systems serving an estimated 62,636 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.

PlainEnviro's health-based SDWIS extract shows 168 violation records across the 32 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 4 distinct EPA contaminant codes: Groundwater Rule, Revised Total Coliform Rule, Coliform (TCR), Stage 1 Disinfectants and Disinfection Byproducts Rule. 6 TRI-reporting industrial facilities are also located within the city limits.

A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Northern Mariana Islands drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.

Community Water Systems

System Name Pop. Served Violations Status
Commonwealth Utilities Corp (Saipan) 48,524 80 Health
Saipan Ice And Water 3,101 0 Clean
Commonwealth Utilities Corp (Tinian) 3,005 5 Health
Commonwealth Utilities Corp (Rota) 2,504 9 Health
Star Water 1,522 0 Clean
Pacific Islands Club 554 0 Clean
Finasisu Terrace Apartment 393 0 Clean
The Water Company 310 4 Health
Marianas Ice And Water 300 0 Clean
Kensington Dormitory 260 0 Clean
Anaks Condominium 243 0 Clean
Lao Lao Bay Golf Resort 200 0 Clean
JG Sablan Ice And Water 173 0 Clean
Aqua Water 170 16 Health
Diamond Ice And Water 155 0 Clean
Black Micro Corporation Tinian 150 0 Clean
San Jose Mart Water 130 2 Health
Winners Residence 124 0 Clean
Saipan Vegas 100 2 Health
Popz Purified Drinking Water 100 0 Clean
Xu Sunshine Corp 79 0 Clean
MSVillagomez Estate 66 0 Clean
Modern Stationary 60 6 Health
Pacific Palms 56 18 Health
99 Cents Supermart Water 55 0 Clean
Diamond Water Gualo Rai 55 7 Health
Hilltop Condominium 51 0 Clean
Tropical Drinking Water 47 3 Health
CK Townhouse 46 0 Clean
Afetna Supermarket 40 4 Health
Stanford Resort Hotel 33 0 Clean
Crystal Ice And Water 30 12 Health

Does this city have health-based water violations?

These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.

Water system Contaminant Begin Date
Saipan Vegas Groundwater Rule 2025-05-23
Saipan Vegas Groundwater Rule 2025-05-23
Diamond Water Gualo Rai Groundwater Rule 2024-08-15
Diamond Water Gualo Rai Groundwater Rule 2024-08-15
Modern Stationary Groundwater Rule 2024-05-31
Modern Stationary Groundwater Rule 2024-05-31
Modern Stationary Groundwater Rule 2024-05-31
Modern Stationary Groundwater Rule 2024-05-31
Modern Stationary Groundwater Rule 2024-05-31
Modern Stationary Groundwater Rule 2024-05-31
Afetna Supermarket Groundwater Rule 2024-04-30
Afetna Supermarket Groundwater Rule 2024-04-30
Afetna Supermarket Groundwater Rule 2024-04-30
Afetna Supermarket Groundwater Rule 2024-04-30
Commonwealth Utilities Corp (Saipan) Revised Total Coliform Rule 2023-11-01
Commonwealth Utilities Corp (Saipan) Revised Total Coliform Rule 2023-11-01
Commonwealth Utilities Corp (Saipan) Revised Total Coliform Rule 2023-11-01
Tropical Drinking Water Revised Total Coliform Rule 2023-10-01
Tropical Drinking Water Revised Total Coliform Rule 2023-10-01
Tropical Drinking Water Revised Total Coliform Rule 2023-10-01
Commonwealth Utilities Corp (Saipan) Revised Total Coliform Rule 2023-10-01
Commonwealth Utilities Corp (Saipan) Revised Total Coliform Rule 2023-10-01
Commonwealth Utilities Corp (Saipan) Revised Total Coliform Rule 2023-10-01
Commonwealth Utilities Corp (Saipan) Revised Total Coliform Rule 2023-10-01
Aqua Water Groundwater Rule 2022-12-31
Aqua Water Groundwater Rule 2022-12-31
Aqua Water Groundwater Rule 2022-12-31
Aqua Water Groundwater Rule 2022-12-31
Aqua Water Groundwater Rule 2022-12-31
Aqua Water Groundwater Rule 2022-12-31
Aqua Water Groundwater Rule 2022-12-31
Aqua Water Groundwater Rule 2022-12-31
Commonwealth Utilities Corp (Tinian) Groundwater Rule 2022-12-31
Commonwealth Utilities Corp (Tinian) Groundwater Rule 2022-12-31
The Water Company Groundwater Rule 2022-12-09
The Water Company Groundwater Rule 2022-12-09
The Water Company Groundwater Rule 2022-12-09
Aqua Water Groundwater Rule 2022-12-07
Aqua Water Groundwater Rule 2022-12-07
Aqua Water Groundwater Rule 2022-12-07
Aqua Water Groundwater Rule 2022-12-07
Aqua Water Groundwater Rule 2022-12-07
Aqua Water Groundwater Rule 2022-12-07
Aqua Water Groundwater Rule 2022-12-07
Aqua Water Groundwater Rule 2022-12-07
Commonwealth Utilities Corp (Rota) Groundwater Rule 2022-11-30
Commonwealth Utilities Corp (Rota) Groundwater Rule 2022-11-30
Commonwealth Utilities Corp (Rota) Groundwater Rule 2022-11-30
Crystal Ice And Water Groundwater Rule 2022-05-20
Crystal Ice And Water Groundwater Rule 2022-05-20

What are Saipan's health-based records for?

Saipan's health-based violation records carry 4 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.

Contaminant Records Systems
Groundwater Rule 151 11
Revised Total Coliform Rule 12 2
Coliform (TCR) 4 2
Stage 1 Disinfectants and Disinfection Byproducts Rule 1 1

TRI Facilities in Saipan

Facility Total Releases
Commonwealth Utilities Corp (cuc) 13.1K lbs
Mariana Acquistion Corp/saipan Terminal 12.1K lbs
Mobil Oil Mariana Islands Inc (saipan Terminal) 8.3K lbs
Mobil Oil Mariana Islands Inc (saipan Aviation Depot) 58 lbs
Commonwealth Utilities Corp (cuc) 13 lbs
Hawaiian Rock Products Road Paving 12 lbs

Frequently Asked Questions

What does EPA SDWIS list for drinking water in Saipan, Northern Mariana Islands? ▼
Saipan is listed with 32 EPA-regulated water systems covering approximately 62,636 people. 168 health-based violation records appear in the extract. A past registry row is not a current drinkability verdict; contact the local utility for current status.
How many water violations does Saipan have in this EPA extract? ▼
Saipan water systems have 168 health-based violation records in PlainEnviro's EPA SDWIS extract. This extract is filtered to EPA health-based records and does not include monitoring or reporting violations.
What contaminants were found in Saipan water? ▼
Health-based records for Saipan water systems carry the following EPA contaminant codes: Groundwater Rule, Revised Total Coliform Rule, Coliform (TCR), Stage 1 Disinfectants and Disinfection Byproducts Rule. This source edition does not include authoritative contaminant names. Source: EPA SDWIS.
How many water systems serve Saipan? ▼
32 EPA-regulated community water systems serve Saipan, Northern Mariana Islands, collectively covering approximately 62,636 people. Data is from the EPA Safe Drinking Water Information System (SDWIS).
Where does Saipan get its drinking water? ▼
Saipan's water supply comes from 32 EPA-regulated community water systems. Source type data is not available for all systems. For detailed supply information, contact your local water utility. Source: EPA SDWIS.
Are there pollution sources near Saipan? ▼
Yes, 6 EPA Toxic Release Inventory (TRI) facilities are registered in Saipan, Northern Mariana Islands, reporting a combined 33.6K lbs of toxic chemical releases. TRI data reflects self-reported emissions; it does not measure exposure or health effects. Source: EPA TRI.

How does Saipan compare in Northern Mariana Islands?

Of the 4 Northern Mariana Islands places with at least one community water system on file, Saipan ranks #1 by number of systems (32).

Either side of it: Tinian (2), Rota (1)

About This Data

Figures here are the current EPA SDWIS extract joined to the 32 community water systems whose service area lists Saipan, ranked against the 4 Northern Mariana Islands places with at least one system on file. Data current as of 2026-08-25.

Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.

A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.

TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.

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

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro