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Linton Hall School

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
350 people
Connections
7
Water source
Groundwater
Based in
Bristow, VA
County
Prince William
Owner
Private

The short answer

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

What handles it

What was found

Arsenic: Virginia’s yearly averages per water system, as CDC’s Environmental Public Health Tracking Network publishes them, 2021 to 2023.

Total trihalomethanes (TTHM), nitrate, chromium (total), haloacetic acids (HAA5) and fluoride: EPA’s compliance monitoring file, samples taken from Feb. 28, 2012 to Sept. 10, 2019. Newer results are in the utility’s annual water quality report.

Above the health goal1

Arsenic

Comes from the source

Above the health goal

1.5ppb

Highest yearly average, 2021 to 2023

Averaged by year, the highest was 1.5 ppb, in 2023: below EPA’s legal limit of 10 ppb, but above its health goal of zero. That was also the latest year on file.

What handles it

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

Below EPA’s limits5

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

14ppb

Highest yearly average, 2013 to 2019

2019, one sample: 2.2 ppb

Averaged by year, the highest was 14 ppb, in 2016, below EPA’s legal limit of 80 ppb. In 2019, the latest year on file, its one sample was 2.2 ppb.

What handles it

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

Nitrate

Comes from the source

Below EPA’s limits

1.0ppm

Highest sample; found in 2 of 2

2018 average: 0.65 ppm

The highest sample, in 2018, was 1.0 ppm, below EPA’s legal limit of 10 ppm. That is the only year on file, and its two samples averaged 0.65 ppm.

What handles it

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

Chromium (total)

Comes from the source

Below EPA’s limits

6.7ppb

Highest yearly average, 2012 to 2018

2018: not found

Averaged by year, the highest was 6.7 ppb, in 2012, below EPA’s legal limit of 100 ppb. Its highest single sample was 6.8 ppb. In 2018, the latest year on file, it wasn’t found in any of its two samples.

What handles it

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

3.0ppb

Highest yearly average, 2013 to 2019

2019: not found

Averaged by year, the highest was 3.0 ppb, in 2016, below EPA’s legal limit of 60 ppb. In 2019, the latest year on file, it wasn’t found in its one sample.

What handles it

No certification claim covers this compound yet.

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.2ppm

Highest yearly average, 2012 to 2018

2018 average: 0.17 ppm

Averaged by year, the highest was 0.2 ppm, in 2012, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 0.23 ppm. In 2018, the latest year on file, its two samples averaged 0.17 ppm.

What handles it

One compound tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Lead

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

    Claim: Arsenic (Pentavalent)<=50 ppb Reduction

    For: Arsenic

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

  • NSF/ANSI 58

    Claim: Arsenic (Pentavalent)<=50 ppb Reduction

    For: Arsenic

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

At the tap, or for the whole house?

These come with the water itself, so a whole-house system certified for the same claims treats every tap and shower. A filter at the tap treats drinking water for much less. 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 reverse osmosis systems, ranked

Violations since 2016

No health-based violations on file with EPA since 2016. There is 1 monitoring or reporting violation: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Arsenic results here are Virginia’s yearly averages as CDC publishes them, from 2021 on, with EPA’s national file for 2012 to 2019. Total trihalomethanes (TTHM), nitrate, chromium (total), haloacetic acids (HAA5) and fluoride come from EPA’s file alone, which ends in 2019. Linton Hall School’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; CDC’s yearly averages for Virginia cover 2021 to 2023; EPA’s compliance samples are from Feb. 28, 2012 to Sept. 10, 2019.

Testing your own tap

Linton Hall School’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 Virginia certifies.

No lab Virginia certifies is within 75 miles of the area Linton Hall School serves on the state’s list. Some take samples by mail; the state’s page lists them all.

Virginia Household Water Quality Program, Virginia Cooperative Extension: Drinking water clinics in about 70 counties a year, run through local Extension offices: pick up a kit, collect the sample on the set day, and drop it off locally. Each kit tests well, spring or cistern water for 28 things, including bacteria, nitrate, lead and arsenic. $70 a kit, with funding to help if you need it. Virginia Household Water Quality Program.

All 145 certified labs for Virginia

Sources

PWSID VA6153475. Rebuilt from EPA data on Oct. 18, 2026.

Also in Prince William County

All Virginia utilities

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