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Public water system record

Griswold MHP LLC

Serves an area of Southeastern Connecticut Planning Region, CT · 99 people served

Federal records show 1 health-based violation and 24 monitoring/reporting issues for Griswold MHP LLC in the last ten years. The most serious issue in this window was a resolved Lead and Copper Rule violation.

  • CT0580031
  • GREAT NECK
  • NY
  • 99 served

System profile

Source water Groundwater
ZIP 11021
EPA system ID CT0580031

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
24

Key facts

  • Griswold MHP LLC draws water from 1 well.
  • Most recent formal enforcement: compliance order with a penalty by Connecticut, October 2006.
  • Record on file since 1991, with 7 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 39 service lines.

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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.

Contaminant Rule family Start date Status Acute
Lead and Copper Rule
Treatment technique failure
 350 Apr 1, 2020 Resolved No

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
 Jul 1, 2022 Resolved
Consumer Confidence Rule
OTHER
 Jul 1, 2021 Resolved
Lead and Copper Rule
Monitoring and reporting
 Apr 1, 2021 Resolved
Public Notice
OTHER
 Apr 1, 2020 Resolved
Consumer Confidence Rule
OTHER
 Aug 10, 2019 Resolved
Consumer Confidence Rule
OTHER
 Aug 10, 2017 Resolved
Consumer Confidence Rule
OTHER
 Jul 1, 2017 Resolved
Lead and Copper Rule
Monitoring and reporting
 Dec 30, 2016 Resolved
Selenium
Monitoring and reporting
 Jan 1, 2016 Resolved
Thallium, Total
Monitoring and reporting
 Jan 1, 2016 Resolved
Beryllium, Total
Monitoring and reporting
 Jan 1, 2016 Resolved
Antimony, Total
Monitoring and reporting
 Jan 1, 2016 Resolved
Nickel
Monitoring and reporting
 Jan 1, 2016 Resolved
Mercury
Monitoring and reporting
 Jan 1, 2016 Resolved
Fluoride
Monitoring and reporting
 Jan 1, 2016 Resolved
CYANIDE
Monitoring and reporting
 Jan 1, 2016 Resolved
Chromium (total)
Monitoring and reporting
 Jan 1, 2016 Resolved
Cadmium
Monitoring and reporting
 Jan 1, 2016 Resolved
Barium
Monitoring and reporting
 Jan 1, 2016 Resolved
Arsenic
Monitoring and reporting
 Jan 1, 2016 Resolved
Consumer Confidence Rule
OTHER
 Aug 10, 2006 Active
Enforcement action in place
Consumer Confidence Rule
OTHER
 Jul 1, 2006 Active
Enforcement action in place
Lead and Copper Rule
Monitoring and reporting
 Jul 1, 1994 Active
Lead and Copper Rule
Monitoring and reporting
 Jan 1, 1994 Active

Full record since 1991

EPA's records for Griswold MHP LLC go back to 1991. Before October 19, 2016 they list 7 health-based violations (4 resolved, 3 archived by EPA without a recorded fix) and 64 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 2 20
2000s 0 24
2010 to October 18, 2016 5 20
October 19, 2016 to 2019 0 4
2020s 1 4

Most recent health-based violation before October 19, 2016: Total Coliform, began January 2014, Resolved.

Show all 7 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
 Jan 1, 2014 Resolved
Total Coliform
Contaminant limit exceeded
 Dec 1, 2013 Resolved
Total Coliform
Contaminant limit exceeded
 Aug 1, 2011 Resolved
Total Coliform
Contaminant limit exceeded
 Sep 1, 2010 Archived
Total Coliform
Contaminant limit exceeded
 Aug 1, 2010 Archived
Lead and Copper Rule
Treatment technique failure
 Jul 1, 1994 Resolved
Lead and Copper Rule
Treatment technique failure
 Jan 1, 1994 Archived

Enforcement actions

Connecticut regulators took 8 formal enforcement actions against Griswold MHP LLC between 1993 and 2006. The most recent was a compliance order with a penalty in October 2006.

Date By Action Violations covered
Oct 19, 2006 Connecticut Compliance order with a penalty 2 violations: Consumer Confidence Rule
Jan 17, 2006 Connecticut Compliance order with a penalty 2 violations: Consumer Confidence Rule
May 11, 2004 Connecticut Compliance order with a penalty 12 violations: Cadmium, Chromium (total), CYANIDE, Fluoride, Nickel
Apr 16, 2001 Connecticut Administrative penalty 1 violation: Total Coliform
Feb 22, 2001 Connecticut Compliance order with a penalty 1 violation: Total Coliform
Mar 7, 1997 Connecticut Signed compliance agreement 1 violation: Gross Alpha, Excl. Radon and U
Mar 1, 1993 Connecticut Compliance order with a penalty 8 violations: 1,1-Dichloroethylene, Trichloroethylene, 1,2-Dichloroethane, Benzene, p-Dichlorobenzene
Mar 1, 1993 Connecticut Administrative penalty 16 violations: Benzene, 1,1-Dichloroethylene, Trichloroethylene, 1,2-Dichloroethane, p-Dichlorobenzene

What the violations mean

Lead and Copper Rule

1 incident

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

The utility had to notify customers about this violation.

Where the water comes from

Griswold MHP LLC draws water from 1 well.

Annual water quality report

Griswold MHP LLC 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 Griswold MHP LLC 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