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Mountain View Correctional Facility

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
468 people
Connections
30
Water source
Groundwater
Based in
Charleston, ME
County
Penobscot
Owner
State government
The ZIP code it serves

04422

The short answer

3 results are 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

Lead and copper: EPA SDWIS monitoring periods ending 2019 to 2025.

Arsenic, nitrate, haloacetic acids (HAA5) and total trihalomethanes (TTHM): Maine’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.

Uranium, chromium (total) and fluoride: EPA’s compliance monitoring file, samples taken from March 5, 2014 to Oct. 9, 2019. Newer results are in the utility’s annual water quality report.

Above the health goal3

Arsenic

Comes from the source

Above the health goal

4.2ppb

Highest yearly average, 2020 to 2023

2023 average: 1.6 ppb

Averaged by year, the highest was 4.2 ppb, in 2021: below EPA’s legal limit of 10 ppb, but above its health goal of zero. In 2023, the latest year on file, it averaged 1.6 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 28.5 ppb, in 2016.

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

2.3ppb

Highest yearly average, 2015 to 2019

2019 average: 0.89 ppb

Averaged by year, the highest was 2.3 ppb, in 2016: below EPA’s legal limit of 30 ppb, but above its health goal of zero. In 2019, the latest year on file, its two samples averaged 0.89 ppb.

What handles it

Lead

Comes from pipes, often your own

Above the health goal

0.5ppb

90th percentile, 2025

In the latest period, 9 in 10 homes sampled were at or below 0.5 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 limits4

Nitrate

Comes from the source

Below EPA’s limits

0.75ppm

Highest yearly average, 2020 to 2023

2023 average: 0.67 ppm

Averaged by year, the highest was 0.75 ppm, in 2021, below EPA’s legal limit of 10 ppm. In 2023, the latest year on file, it averaged 0.67 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 0.88 ppm, in 2012.

What handles it

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

Haloacetic acids (HAA5)

Forms or is added in treatment

Below EPA’s limits

2.3ppb

Highest yearly average, 2020 to 2023

Averaged by year, the highest was 2.3 ppb, in 2023, below EPA’s legal limit of 60 ppb. That was also the latest year on file.

What handles it

No certification claim covers this compound yet.

Chromium (total)

Comes from the source

Below EPA’s limits

3.2ppb

Highest yearly average, 2014 to 2017

2017 average: 0.89 ppb

Averaged by year, the highest was 3.2 ppb, in 2016, below EPA’s legal limit of 100 ppb. In 2017, the latest year on file, its two samples averaged 0.89 ppb.

What handles it

Total trihalomethanes (TTHM)

Forms or is added in treatment

Below EPA’s limits

2.5ppb

Highest yearly average, 2020 to 2023

2023 average: 2.0 ppb

Averaged by year, the highest was 2.5 ppb, in 2022, below EPA’s legal limit of 80 ppb. In 2023, the latest year on file, it averaged 2.0 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 2.7 ppb, in 2013.

What handles it

  • NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
  • NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
One compound tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
  • 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: Arsenic (Pentavalent)<=50 ppb Reduction, Lead Reduction

    For: Arsenic, Lead

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

  • NSF/ANSI 58

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

    For: Arsenic, Uranium, Lead

    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 reverse osmosis systems, ranked

The best water filters for lead, ranked

Violations since 2016

No health-based violations on file with EPA since 2016. There are 16 monitoring or reporting violations: a sample missed, late or not reported.

What this report can’t tell you

  • Everything else. Arsenic, nitrate, haloacetic acids (HAA5) and total trihalomethanes (TTHM) results here are Maine’s yearly averages as CDC publishes them, 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. Mountain View Correctional Facility’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 Maine cover 2020 to 2023; EPA’s compliance samples are from March 5, 2014 to Oct. 9, 2019.

Testing your own tap

Mountain View Correctional Facility’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 Maine certifies.

The 3 labs Maine certifies closest to the area Mountain View Correctional Facility serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

Maine Health and Environmental Testing Laboratory: Well water test kits ordered online, from a bacteria-only test to full panels for new wells and home sales. The lab must receive the sample within 30 hours of collection. The basic safety test is $42, bacteria alone $27, first-draw lead $32, and the fuller well tests $127 to $147. Maine Private Well and Radiological Water and Air Test.

All 53 certified labs for Maine

Sources

PWSID ME0090342. Rebuilt from EPA data on Oct. 18, 2026.

Also in Penobscot County

All Maine utilities

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