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Estates at Highland Ridge

What EPA’s and Massachusetts’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
100 people
Connections
39
Water source
Groundwater
Based in
Hopkinton, MA
County
Middlesex
Owner
Private
Hardness
Varies by source
The ZIP code it serves

01748

The short answer

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

What handles it

What was found

Copper: EPA’s file records a utility’s copper only when it exceeds the action level. The last here was 1.7 ppm, for the period ending Dec. 31, 2017. None since is on file, so it is not counted as a current finding.

Uranium, nitrate, fluoride, arsenic and chromium (total): Massachusetts’s own results, samples taken from May 14, 2020 to June 25, 2026, with EPA’s 2012 to 2019 file for earlier years.

Above the health goal1

Uranium

Comes from the source

Above the health goal

11.3ppb

Highest yearly average, 2020 to 2026

2026 average: 7.4 ppb

Averaged by year, the highest was 11.3 ppb, in 2020: below EPA’s legal limit of 30 ppb, but above its health goal of zero. Its highest single sample was 39.1 ppb. In 2026, the latest year on file, its five samples averaged 7.4 ppb. EPA recorded no violation for uranium at this utility since 2020. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 11.1 ppb, in 2016.

What handles it

Below EPA’s limits2

Nitrate

Comes from the source

Below EPA’s limits

2.7ppm

Highest sample; found in 8 of 11

2026 average: 0.98 ppm

The highest sample, in 2026, was 2.7 ppm, below EPA’s legal limit of 10 ppm. That was also the latest year on file, and its five samples averaged 0.98 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 1.8 ppm, in 2018.

What handles it

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

Fluoride

Forms or is added in treatment

Below EPA’s limits

0.4ppm

Highest yearly average, 2021 to 2024

Averaged by year, the highest was 0.4 ppm, in 2024, below EPA’s legal limit of 4.0 ppm. That was also the latest year on file. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 1.0 ppm, in 2018.

What handles it

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

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

None of the filters TapBuff has checked so far carry these claims. Search the certifier listings for the claim above.

Compare five-year costs

Hardness

Moderately hard to hard depending on the source, 100 to 137 mg/L (5.8 to 8 grains per gallon), across 6 sampling points, in 2018.

Hardness is calcium and magnesium. EPA sets no limit for it: it shows up as scale on fixtures and in water heaters, and as soap that won’t lather. USGS calls water above 60 mg/L moderately hard, above 120 hard and above 180 very hard.

Softeners compared, salt includedSoftener or salt-free conditioner?Massachusetts water hardness, utility by utility

Violations since 2016

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

What this report can’t tell you

  • Everything else. Uranium, nitrate, fluoride, arsenic and chromium (total) results here are Massachusetts’s own from 2020 on, with EPA’s national file for 2012 to 2019. Estates at Highland Ridge’s own annual report, which it must send you every year, has 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; Massachusetts’s results run from May 14, 2020 to June 25, 2026.

Testing your own tap

Estates at Highland Ridge’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 Massachusetts certifies.

The 3 labs Massachusetts certifies closest to the area Estates at Highland Ridge serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Proverde Environmental, Inc.

    Milford, MA · about 5 miles

    Certified for PFAS

    (617) 221-3356

  • Pace Analytical LLC-Westborough

    Westborough, MA · about 5 miles

    Certified for bacteria, nitrate, minerals and other inorganics

    (508) 898-9220

  • Eurofins-Worcester

    Worcester, MA · about 14 miles

    Certified for bacteria

    (401) 461-7181

All 81 certified labs for Massachusetts

Sources

PWSID MA2139010. Rebuilt from EPA data on Oct. 18, 2026.

Towns it serves

Also in Middlesex County

All Massachusetts utilities

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