Millbrook School
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
- 350 people
- Connections
- 15
- Water source
- Groundwater
- Based in
- Stanford (T), NY
- County
- Dutchess
- Owner
- Private
The ZIP code it serves
The short answer
1 result is above the limit’s level with no violation recorded, and 2 more are above the health goal. The worst: Uranium, above the limit’s level, no violation. No health-based violations on file since 2016.
What handles itWhat was found
Lead and copper: EPA SDWIS monitoring periods ending 2007 to 2028.
Arsenic, total trihalomethanes (TTHM), nitrate 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 Nov. 19, 2012 to April 17, 2019. Newer results are in the utility’s annual water quality report.
Above the limit’s level, no violation recorded1
Uranium
Comes from the source
34.4ppb
Highest yearly average, 2013 to 2017
2017: not found
Averaged by year, the highest was 34.4 ppb, in 2015, above EPA’s legal limit of 30 ppb. Its highest single sample was 44.5 ppb. In 2017, the latest year on file, it wasn’t found in any of its two samples. EPA judges this limit on running averages at each sampling point, and recorded no violation for uranium at this utility from 2012 to 2019. Results like these with no violation often include water sampled before treatment or blending; the utility’s annual report says what reaches the tap.
What handles it
- NSF/ANSI 58 look for “Uranium”
Above the health goal2
Arsenic
Comes from the source
1.9ppb
Highest yearly average, 2021 to 2024
2024 average: 1.5 ppb
Averaged by year, the highest was 1.9 ppb, in 2022: below EPA’s legal limit of 10 ppb, but above its health goal of zero. In 2024, the latest year on file, it averaged 1.5 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 1.3 ppb, in 2017.
What handles it
- NSF/ANSI 58 look for “Arsenic (Pentavalent)<=50 ppb Reduction”
- NSF/ANSI 53 look for “Arsenic (Pentavalent)<=50 ppb Reduction”
Lead
Comes from pipes, often your own
1.8ppb
90th percentile, 2026 to 2028
In the latest period, 9 in 10 homes sampled were at or below 1.8 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
- NSF/ANSI 53 look for “Lead Reduction”
- NSF/ANSI 58 look for “Lead Reduction”
Below EPA’s limits5
Total trihalomethanes (TTHM)
Forms or is added in treatment
62.8ppb
Highest yearly average, 2020 to 2024
2024 average: 21.5 ppb
Averaged by year, the highest was 62.8 ppb, in 2023, below EPA’s legal limit of 80 ppb. Its highest single sample was 113 ppb. In 2024, the latest year on file, it averaged 21.5 ppb. EPA recorded no violation for total trihalomethanes (TTHM) at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 64.5 ppb, in 2019.
What handles it
- NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
- NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
Nitrate
Comes from the source
7.1ppm
Highest sample; found in 7 of 8
2024 average: 1.8 ppm
The highest sample, in 2020, was 7.1 ppm, below EPA’s legal limit of 10 ppm. In 2024, the latest year on file, it averaged 1.8 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 5.2 ppm, in 2013.
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
11.7ppb
Highest yearly average, 2020 to 2024
2024 average: 3.5 ppb
Averaged by year, the highest was 11.7 ppb, in 2021, below EPA’s legal limit of 60 ppb. Its highest single sample was 15 ppb. In 2024, the latest year on file, it averaged 3.5 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 20.6 ppb, in 2019.
What handles it
No certification claim covers this compound yet.
Chromium (total)
Comes from the source
10.4ppb
Highest yearly average, 2012 to 2019
2019, one sample: 4.9 ppb
Averaged by year, the highest was 10.4 ppb, in 2018, below EPA’s legal limit of 100 ppb. Its highest single sample was 12.2 ppb. In 2019, the latest year on file, its one sample was 4.9 ppb.
What handles it
- NSF/ANSI 58 look for “Chromium (Hexavalent) Reduction”
- NSF/ANSI 53 look for “Chromium Reduction”
Fluoride
Forms or is added in treatment
0.15ppm
Highest yearly average, 2012 to 2019
2019: not found
Averaged by year, the highest was 0.15 ppm, in 2018, below EPA’s legal limit of 4.0 ppm. Its highest single sample was 0.25 ppm. In 2019, the latest year on file, it wasn’t found in its one sample.
What handles it
- NSF/ANSI 58 look for “Fluoride Reduction”
- NSF/ANSI 53 look for “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: Uranium, Arsenic (Pentavalent)<=50 ppb Reduction, Lead Reduction
For: Uranium, Arsenic, 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
Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Arsenic, Lead
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic, Lead
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic, Lead
Brita Tahoe Pitcher with Elite Filter (OB60, OB06)
Pitcher
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 13, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 13, 2026
Certified for: Lead
Violations since 2016
No health-based violations on file with EPA since 2016.
What this report can’t tell you
Everything else. Arsenic, total trihalomethanes (TTHM), nitrate 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. Millbrook 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; New York’s yearly summaries cover 2020 to 2024; EPA’s compliance samples are from Nov. 19, 2012 to April 17, 2019.
Testing your own tap
The 3 labs New York certifies closest to the area Millbrook School serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Poughkeepsies' Water Treatment Facility
Poughkeepsie, NY · about 14 miles
Certified for bacteria
Environmental Labworks Inc.
Marlboro, NY · about 21 miles
Certified for bacteria
Pace Analytical Services, LLC-Newburgh
Newburgh, NY · about 26 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Sources
- EPA UCMR 5 occurrence data, file of Oct. 15, 2026
- EPA SDWA bulk download (SDWIS federal data), 2026 Q3
- New York State Department of Health, Environmental Public Health Tracker, results from Jan. 1, 2020 to Dec. 31, 2024, read Oct. 8, 2026
- EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, file of Feb. 5, 2024
- Certified labs: NYS Environmental Laboratory Approval Program (ELAP), drinking water labs, as listed in TNI LAMS, read Oct. 11, 2026; distances from the Census 2020 ZIP code tabulation area gazetteer
- Limits and goals: each contaminant’s page, with its EPA source.
- How this page is built: methodology.
PWSID NY1316170. Rebuilt from EPA data on Oct. 18, 2026.
What to do next
- Read up on the 3 results above a lineWhat each one does to health, where it comes from, and the certification claim that addresses it.Start with Uranium
- Get the utility’s own reportMillbrook School must send you a water quality report every year. It covers contaminants this page does not show, and has newer results than EPA’s national file for the ones here that come from it.How to read it
- Test your own tap for leadYour service line, solder and fixtures decide the lead at your faucet, not the utility’s average.Lead in your water: what to do
- Compare certified filtersWhat the filters certified for these results cost over five years, cartridges included.Compare five-year costs