Skip to content
TapBuff
ZIP

Carroll (T) Water District

What EPA’s and New York’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
2,600 people
Connections
761
Water source
Groundwater
Based in
Carroll (T), NY
County
Chautauqua
Owner
Local government
The ZIP code it serves

14738

The short answer

3 results are 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 2011 to 2026.

Arsenic, nitrate, total trihalomethanes (TTHM) and haloacetic acids (HAA5): New York’s yearly summaries per water system, 2020 to 2024, with EPA’s 2012 to 2019 file for earlier years.

Uranium, chromium (total) and fluoride: EPA’s compliance monitoring file, samples taken from June 9, 2014 to April 24, 2017. Newer results are in the utility’s annual water quality report.

Above the health goal3

Lead

Comes from pipes, often your own

Above the health goal

2.2ppb

90th percentile, 2024 to 2026

In the latest period, 9 in 10 homes sampled were at or below 2.2 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

Arsenic

Comes from the source

Above the health goal

1.2ppb

Highest yearly average, 2020 to 2023

2023: not found

Averaged by year, the highest was 1.2 ppb, in 2020: below EPA’s legal limit of 10 ppb, but above its health goal of zero. Its highest single sample was 3.0 ppb. In 2023, the latest year on file, it wasn’t found. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 1.6 ppb, in 2014.

What handles it

  • NSF/ANSI 58 look for “Arsenic (Pentavalent)<=50 ppb Reduction”
  • NSF/ANSI 53 look for “Arsenic (Pentavalent)<=50 ppb Reduction”

Uranium

Comes from the source

Above the health goal

0.6ppb

Highest yearly average, 2015

Averaged by year, the highest was 0.6 ppb, in 2015: below EPA’s legal limit of 30 ppb, but above its health goal of zero. Its highest single sample was 0.78 ppb. That is the only year on file.

What handles it

Below EPA’s limits3

Nitrate

Comes from the source

Below EPA’s limits

6.0ppm

Highest sample; found in 10 of 15

2024 average: 2.5 ppm

The highest sample, in 2020, was 6.0 ppm, below EPA’s legal limit of 10 ppm. In 2024, the latest year on file, it averaged 2.5 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 6.6 ppm, in 2019.

What handles it

  • NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
  • NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

12.3ppb

Highest yearly average, 2020 to 2024

2024 average: 3.2 ppb

Averaged by year, the highest was 12.3 ppb, in 2020, below EPA’s legal limit of 80 ppb. Its highest single sample was 12.7 ppb. In 2024, the latest year on file, it averaged 3.2 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 12.9 ppb, in 2017.

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

3.5ppb

Highest yearly average, 2020 to 2024

Averaged by year, the highest was 3.5 ppb, in 2024, below EPA’s legal limit of 60 ppb. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 4.9 ppb, in 2017.

What handles it

No certification claim covers this compound yet.

2 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Chromium (total)
  • Fluoride

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.”

  • NSF/ANSI 53

    Claims: Lead Reduction, Arsenic (Pentavalent)<=50 ppb Reduction

    For: Lead, Arsenic

    Other certifiers’ wording: Arsenic (III) (50 ppb influent level)

  • NSF/ANSI 58

    Claims: Lead Reduction, Arsenic (Pentavalent)<=50 ppb Reduction, Uranium

    For: Lead, Arsenic, Uranium

    Other certifiers’ wording: Arsenic (Pentavalent)<=300 ppb Reduction; Arsenic (V) (300 ppb influent level)

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

The best reverse osmosis systems, ranked

Violations since 2016

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

What this report can’t tell you

  • Everything else. Arsenic, nitrate, total trihalomethanes (TTHM) and haloacetic acids (HAA5) results here are New York’s own yearly summaries from 2020 on, with EPA’s national file for 2012 to 2019. Uranium, chromium (total) and fluoride come from EPA’s file alone, which ends in 2019. Carroll (T) Water District’s own annual report, which it must send you every year, has newer results for those and 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; New York’s yearly summaries cover 2020 to 2024; EPA’s compliance samples are from June 9, 2014 to April 24, 2017.

Testing your own tap

Carroll (T) Water District’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 New York certifies.

The 3 labs New York certifies closest to the area Carroll (T) Water District serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Chautauqua County Health

    Mayville, NY · about 25 miles

    Certified for bacteria

    (716) 753-4481

  • Pace Analytical Services, LLC - Erie

    Erie, PA · about 45 miles

    Certified for bacteria

    (814) 660-6078

  • Mcandrew Laboratory Inc.

    Orchard Park, NY · about 51 miles

    Certified for bacteria

    (716) 649-7960

All 161 certified labs for New York

Sources

PWSID NY0600365. Rebuilt from EPA data on Oct. 18, 2026.

Also in Chautauqua County

All New York utilities

What to do next