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Public water system record

CTWC - Shoreline Region-Masons Island

Serves an area of Southeastern Connecticut Planning Region, CT · 445 people served

Federal records show no health-based violations and 3 monitoring/reporting issues for CTWC - Shoreline Region-Masons Island in the last ten years.

  • CT1370051
  • CLINTON
  • CT
  • 445 served

System profile

Source water Purchased surface water
ZIP 06413
EPA system ID CT1370051

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
3

Key facts

  • CTWC - Shoreline Region-Masons Island buys its water from Aquarion-Mystic.
  • Record on file since 2004, with 4 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 120 unknown out of 194 service lines.

Check whether CTWC - Shoreline Region-Masons Island serves your address

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Health-based violations

Since October 2016

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

None since October 2016.

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Lead and Copper Rule
Monitoring and reporting
 Dec 30, 2021 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Oct 1, 2017 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Oct 1, 2017 Resolved

Full record since 2004

EPA's records for CTWC - Shoreline Region-Masons Island go back to 2004. Before October 19, 2016 they list 4 health-based violations (4 resolved) and 3 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 4 0
2010 to October 18, 2016 0 3
October 19, 2016 to 2019 0 2
2020s 0 1

Most recent health-based violation before October 19, 2016: Haloacetic Acids (HAA5), began January 2006, Resolved.

Show all 4 health-based violations before October 19, 2016
Contaminant Start date Status
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.07 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
 Jan 1, 2006 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.063 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 Oct 1, 2005 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.062 mg/L, federal limit 0.06 mg/L (at or just above the limit)
 Jan 1, 2005 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.065 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
 Oct 1, 2004 Resolved

Where the water comes from

CTWC - Shoreline Region-Masons Island buys its water from Aquarion-Mystic. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

CTWC - Shoreline Region-Masons Island 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.

Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask CTWC - Shoreline Region-Masons Island for a copy.

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 Connecticut.

Certified drinking water labs by state EPA guidance for private wells