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Town of Mount Jackson

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
1,864 people
Connections
900
Water source
Groundwater
Based in
Mount Jackson, VA
County
Shenandoah
Owner
Local government
The ZIP code it serves

22842

The short answer

1 result is above the health goal. The worst: Nitrate, 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.

Nitrate, total trihalomethanes (TTHM), haloacetic acids (HAA5), chromium (total) and fluoride: EPA’s compliance monitoring file, samples taken from Jan. 3, 2012 to Dec. 9, 2019. Newer results are in the utility’s annual water quality report.

Above the health goal1

Nitrate

Comes from the source

Above the health goal

15ppm

Highest sample; found in 90 of 90

2019 average: 8.2 ppm

From 2012 to 2019, 15 samples were above EPA’s legal limit of 10 ppm, the highest 15 ppm in 2019. The next sample at the same point, within 30 days, kept the average above the limit for two; one came back under and 12 have no follow-up sample on file within 30 days. 10 ppm is also EPA’s health goal. That was also the latest year on file, and its 14 samples averaged 8.2 ppm. EPA recorded no violation for nitrate at this utility from 2012 to 2019.

What handles it

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

Below EPA’s limits2

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

23.1ppb

Highest yearly average, 2013 to 2019

2019 average: 17.8 ppb

Averaged by year, the highest was 23.1 ppb, in 2016, below EPA’s legal limit of 80 ppb. Its highest single sample was 44 ppb. In 2019, the latest year on file, its two samples averaged 17.8 ppb.

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, 2013 to 2019

2019 average: 2.0 ppb

Averaged by year, the highest was 3.5 ppb, in 2013, below EPA’s legal limit of 60 ppb. Its highest single sample was 6.1 ppb. In 2019, the latest year on file, its two samples averaged 2.0 ppb.

What handles it

No certification claim covers this compound yet.

4 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • Arsenic
  • Chromium (total)
  • Fluoride
  • 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: Nitrate/Nitrite (30 ppm challenge)

    For: Nitrate

  • NSF/ANSI 58

    Claim: Nitrate/Nitrite Reduction

    For: Nitrate

    Other certifiers’ wording: Nitrate

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

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Violations since 2016

No health-based violations on file with EPA since 2016. There are 13 monitoring or reporting violations: 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. Nitrate, total trihalomethanes (TTHM), haloacetic acids (HAA5), chromium (total) and fluoride come from EPA’s file alone, which ends in 2019. Town of Mount Jackson’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; EPA’s compliance samples are from Jan. 3, 2012 to Dec. 9, 2019.

Testing your own tap

Town of Mount Jackson’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.

The 3 labs Virginia certifies closest to the area Town of Mount Jackson serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Inboden Environmental Services, Inc.

    Mount Jackson, VA · under a mile

    Certified for bacteria, nitrate

    (540) 477-3300

  • VDACS RAHL Harrisonburg

    Harrisonburg, VA · about 21 miles

    Certified for bacteria

  • Environmental Systems Service, LTD.- Culpeper

    Culpeper, VA · about 45 miles

    Certified for bacteria, nitrate, minerals and other inorganics

    (540) 825-6660

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 VA2171575. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Shenandoah County

All Virginia utilities

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