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Tap water quality report

31 Grist Mill Rd

EPA monitoring tested this supplier for 1 contaminant and detected 1. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

1
contaminants tested
1
detected
30
people served
28
health-based violations
Connecticut rankingsLead in ConnecticutPFAS in Connecticut
Water source
Ground water
Ownership
Private
Counties served
Middlesex

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.

28
health-based violations
618
violations on file
6
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2024-10-17
TT Health-based Unaddressed 2020-02-08
TT Health-based Unaddressed 2020-02-08
MCL Health-based Resolved 2019-01-01 → 2019-01-31
MCL Health-based Resolved 2019-01-01 → 2019-01-31
MCL Health-based Resolved 2019-01-01 → 2019-01-31
MCL Health-based Resolved 2019-01-01 → 2019-01-31
MCL Health-based Resolved 2018-10-01 → 2018-10-31
MCL Health-based Resolved 2018-10-01 → 2018-10-31
MCL Health-based Resolved 2018-10-01 → 2018-10-31

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
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 21/21 LCR 2026

Utility contact

Contact
KARTER, ELIZABETH
Phone
203-376-7958
Email
[email protected]

Frequently asked questions about 31 Grist Mill Rd

Is 31 Grist Mill Rd tap water safe to drink?

EPA monitoring detected 1 contaminant in 31 Grist Mill Rd'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 31 Grist Mill Rd's water?

EPA monitoring detected Lead. The full list with the level and data source for each is above.

How many people does 31 Grist Mill Rd serve?

31 Grist Mill Rd reports serving 30 people in Connecticut, per its EPA record.

Has 31 Grist Mill Rd had any water quality violations?

The EPA has 618 violations on file for 31 Grist Mill Rd, of which 28 are health-based (a contaminant limit or required treatment was breached) and 6 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.