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Ctwc - Chimney Hill

What EPA’s and CDC’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.

Serves
227 people
Connections
47
Water source
Surface water bought from another system
Based in
Farmington, CT
County
Hartford
Owner
Private
The ZIP code it serves

06078

The short answer

1 result is above the health goal. The worst: Lead, above the health goal. No health-based violations on file since 2016.

What handles it

What was found

Lead and copper: EPA SDWIS monitoring periods ending 2018 to 2025.

Total trihalomethanes (TTHM) and haloacetic acids (HAA5): Connecticut’s yearly averages per water system, as CDC’s Environmental Public Health Tracking Network publishes them, 2020 to 2023, with EPA’s 2012 to 2019 file for earlier years.

Above the health goal1

Lead

Comes from pipes, often your own

Above the health goal

0.1ppb

90th percentile, 2025

In the latest period, 9 in 10 homes sampled were at or below 0.1 ppb, below EPA’s action level of 15 ppb. The action level drops to 10 ppb on Nov. 1, 2027. EPA’s health goal for lead is zero.

What handles it

Below EPA’s limits2

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

74ppb

Highest yearly average, 2020 to 2023

2023 average: 54.9 ppb

Averaged by year, the highest was 74 ppb, in 2021, below EPA’s legal limit of 80 ppb. In 2023, the latest year on file, it averaged 54.9 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 65.2 ppb, in 2012.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

39.9ppb

Highest yearly average, 2020 to 2023

2023 average: 31.8 ppb

Averaged by year, the highest was 39.9 ppb, in 2021, below EPA’s legal limit of 60 ppb. In 2023, the latest year on file, it averaged 31.8 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 38 ppb, in 2013.

What handles it

No certification claim covers this compound yet.

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

At the tap, or for the whole house?

Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. How whole-house systems compare.

Filters with those claims on a certifier’s listing

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

Compare five-year costs

The best water filters for lead, ranked

Violations since 2016

No health-based violations on file with EPA since 2016.

What this report can’t tell you

  • Everything else. Total trihalomethanes (TTHM) and haloacetic acids (HAA5) results here are Connecticut’s yearly averages as CDC publishes them, from 2020 on, with EPA’s national file for 2012 to 2019. Ctwc - Chimney Hill’s own annual report, which it must send you every year, has the contaminants this page does not show.

  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.

  • What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.

  • Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; CDC’s yearly averages for Connecticut cover 2020 to 2023.

Testing your own tap

Ctwc - Chimney Hill’s results are for the water it sends out. What your own service line, solder and fixtures add shows up only in a test of your tap, by a lab Connecticut certifies.

The 3 labs Connecticut certifies closest to the area Ctwc - Chimney Hill serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Vallid Laboratories, Inc.

    Agawam, MA · about 5 miles

    Certified for bacteria

    (413) 789-2206

  • Envirotech Laboratory

    Windsor, CT · about 8 miles

    Certified for bacteria, nitrate, metals, minerals and other inorganics, radioactivity

    (860) 688-7249

  • Pace Analytical Services, LLC - East Longmeadow

    East Longmeadow, MA · about 9 miles

    Certified for bacteria, nitrate, minerals and other inorganics, organic chemicals, PFAS

    (413) 525-2332

All 86 certified labs for Connecticut

Sources

PWSID CT0529051. Rebuilt from EPA data on Oct. 18, 2026.

Also in Hartford County

All Connecticut utilities

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