Tap Truth EPA drinking water records, in plain English

Public water system record

Commonwealth Utilities Corp (Rota)

Serves Sinapalo, I Chenchon, Ginalangan (Chudan) and 19 more places, Rota Municipality, MP · 2,504 people served

Federal records show 2 health-based violations and 1 monitoring/reporting issue for Commonwealth Utilities Corp (Rota) in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.

  • MP0000003
  • SAIPAN
  • MP
  • 2,504 served

System profile

Source water Groundwater
ZIP 96950
EPA system ID MP0000003

Verify this system on EPA ECHO →

Health-based violations, last 10 years
2
Resolved
2
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
1

Key facts

  • Commonwealth Utilities Corp (Rota) draws water from 4 wells (3 of them for emergency, seasonal or other part-time use).
  • Record on file since 2001, with 2 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 1,862 unknown out of 1,862 service lines.

Check whether Commonwealth Utilities Corp (Rota) serves your address

Address suggestions by Mapbox

Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Groundwater Rule
Treatment technique failure
 140 Nov 30, 2022 Resolved No
Groundwater Rule
Treatment technique failure
 140 Feb 29, 2020 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Public Notice
OTHER
 Nov 30, 2022 Resolved

Full record since 2001

EPA's records for Commonwealth Utilities Corp (Rota) go back to 2001. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 14 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 2 14
2020s 2 1

Most recent health-based violation before October 19, 2016: Total Coliform, began June 2007, Resolved.

Show all 2 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Jun 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
 Sep 1, 2001 Resolved

What the violations mean

Groundwater Rule

2 incidents

The system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).

The utility had to notify customers about each of these violations.

Where the water comes from

Commonwealth Utilities Corp (Rota) draws water from 4 wells (3 of them for emergency, seasonal or other part-time use). 1 other community water system buys water from Commonwealth Utilities Corp (Rota).

Community systems that buy water from it

Annual water quality report

Commonwealth Utilities Corp (Rota) must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by the Northern Mariana Islands.

Certified drinking water labs by state EPA guidance for private wells