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Tap water quality report

Groton Long Point Association

EPA monitoring tested this supplier for 5 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

5
contaminants tested
5
detected
2,400
people served
7
health-based violations
Connecticut rankingsLead in ConnecticutPFAS in Connecticut
Water source
SWP
Ownership
Private
Counties served
New London

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

7
health-based violations
59
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2005-01-01 → 2005-03-31
MCL Health-based Resolved 2005-01-01 → 2005-03-31
MCL Health-based Resolved 2005-01-01 → 2005-03-31
MCL Health-based Resolved 2005-01-01 → 2005-03-31
MCL Health-based Resolved 2004-10-01 → 2004-12-31
MCL Health-based Resolved 2004-10-01 → 2004-12-31
MCL Health-based Resolved 2004-10-01 → 2004-12-31
MR Monitoring Resolved 2025-09-29
Other Monitoring Resolved 2025-08-10
Other Monitoring Resolved 2025-07-01

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
70.78 µg/L 88%
of the EPA limit 80 µg/L
worst single sample: 90.4 µg/L
32/32 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
35.885 µg/L 60%
of the EPA limit 60 µg/L
worst single sample: 41.9 µg/L
32/32 SYR4 2012–2019
Copper
85.35 µg/L 6.6%
of the EPA limit 1300 µg/L
worst single sample: 130 µg/L
20/20 SYR4 2014–2017
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2025
Lead
5.7 µg/L 38%
of the EPA limit 15 µg/L
worst single sample: 6.4 µg/L
5/20 SYR4 2014–2017

Utility contact

Contact
WALKER, LANCE
Phone
860-460-8972
Email
[email protected]

Frequently asked questions about Groton Long Point Association

Is Groton Long Point Association tap water safe to drink?

EPA monitoring detected 5 contaminants in Groton Long Point Association's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Groton Long Point Association's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Copper, Lead, Lead. The full list with the level and data source for each is above.

How many people does Groton Long Point Association serve?

Groton Long Point Association reports serving 2,400 people in Connecticut, per its EPA record.

Has Groton Long Point Association had any water quality violations?

The EPA has 59 violations on file for Groton Long Point Association, of which 7 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.