Madden Estates
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
- 50 people
- Connections
- 22
- Water source
- Groundwater
- Based in
- West Brookfield, MA
- County
- Worcester
- Owner
- Private
- Hardness
- Soft
The ZIP code it serves
The short answer
Nothing in EPA’s and Massachusetts’s records for this utility is above a health goal. That covers nitrate, arsenic and other regulated chemicals, plus lead and copper, not everything. 6 health-based violations since 2016.
What was found
Nitrate, chromium (total), arsenic and fluoride: Massachusetts’s own results, samples taken from April 1, 2020 to April 7, 2026, with EPA’s 2012 to 2019 file for earlier years.
Haloacetic acids (HAA5) and total trihalomethanes (TTHM): EPA’s compliance monitoring file, samples taken from Aug. 8, 2012 to Aug. 21, 2013. Newer results are in the utility’s annual water quality report.
Below EPA’s limits4
Haloacetic acids (HAA5)
Forms or is added in treatment
18ppb
Highest yearly average, 2012
Averaged by year, the highest was 18 ppb, in 2012, below EPA’s legal limit of 60 ppb. That is the only year on file.
What handles it
No certification claim covers this compound yet.
Total trihalomethanes (TTHM)
Forms or is added in treatment
11ppb
Highest yearly average, 2012 to 2013
2013: not found
Averaged by year, the highest was 11 ppb, in 2012, below EPA’s legal limit of 80 ppb. In 2013, the latest year on file, it wasn’t found in its one sample.
What handles it
- NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
- NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
Nitrate
Comes from the source
0.69ppm
Highest sample; found in 7 of 7
2026, one sample: 0.69 ppm
The highest sample, in 2026, was 0.69 ppm, below EPA’s legal limit of 10 ppm. That was also the latest year on file, and its one sample was 0.69 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 1.2 ppm, in 2013.
What handles it
- NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
- NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
Chromium (total)
Comes from the source
1.0ppb
Highest yearly average, 2022 to 2025
Averaged by year, the highest was 1.0 ppb, in 2025, below EPA’s legal limit of 100 ppb. That was also the latest year on file.
What handles it
- NSF/ANSI 58 look for “Chromium (Hexavalent) Reduction”
- NSF/ANSI 53 look for “Chromium Reduction”
3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
- Arsenic
- Fluoride
- Lead
Hardness
Soft, 22 mg/L (1.3 grains per gallon), at its one sampling point, in 2023.
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.
Violations since 2016
| Contaminant or rule | Type | Period | Measured | Status |
|---|---|---|---|---|
| Lead and Copper Rule | OCCT/SOWT Treatment Installation/Demonstration | Dec. 16, 2020 | — | Resolved |
| Lead and Copper Rule | OCCT/SOWT Treatment Installation/Demonstration | Aug. 21, 2020 | — | Resolved |
| Lead and Copper Rule | OCCT/SOWT Treatment Installation/Demonstration | Feb. 12, 2020 | — | Resolved |
| Lead and Copper Rule | OCCT/SOWT Treatment Installation/Demonstration | Sept. 18, 2019 | — | Resolved |
| Lead and Copper Rule | OCCT/SOWT Treatment Installation/Demonstration | Feb. 18, 2019 | — | Resolved |
| Lead and Copper Rule | OCCT/SOWT Treatment Installation/Demonstration | Nov. 15, 2016 | — | Resolved |
| Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 6 monitoring or reporting violations not shown. | ||||
What this report can’t tell you
Everything else. Nitrate, chromium (total), arsenic and fluoride results here are Massachusetts’s own from 2020 on, with EPA’s national file for 2012 to 2019. Haloacetic acids (HAA5) and total trihalomethanes (TTHM) come from EPA’s file alone, which ends in 2019. Madden Estates’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; Massachusetts’s results run from April 1, 2020 to April 7, 2026; EPA’s compliance samples are from Aug. 8, 2012 to Aug. 21, 2013.
Testing your own tap
The 3 labs Massachusetts certifies closest to the area Madden Estates serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Quabbin Analytical Laboratory
Belchertown, MA · about 12 miles
Certified for bacteria
Eurofins-Worcester
Worcester, MA · about 19 miles
Certified for bacteria
Pace Analytical LLC-East Longmeadow
East Longmeadow, MA · about 21 miles
Certified for bacteria, nitrate, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS
Sources
- EPA UCMR 5 occurrence data, file of Oct. 15, 2026
- EPA SDWA bulk download (SDWIS federal data), 2026 Q3
- Massachusetts Department of Environmental Protection, Drinking Water Program, results from Jan. 2, 2020 to Oct. 5, 2026, read Oct. 8, 2026
- EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, file of Feb. 5, 2024
- Certified labs: MassDEP Online Searchable Laboratory Certification Listing, potable water, read Oct. 16, 2026; distances from the Census 2020 ZIP code tabulation area gazetteer
- Hardness: Massachusetts Department of Environmental Protection, Drinking Water Program, results from April 5, 2023 to April 5, 2023, read Oct. 10, 2026
- Limits and goals: each contaminant’s page, with its EPA source.
- How this page is built: methodology.
PWSID MA2323002. Rebuilt from EPA data on Oct. 18, 2026.
What to do next
- Nothing here is above a health goalIn EPA’s and Massachusetts’s records for this utility. They don’t cover everything, which is why the next step matters.Every contaminant TapBuff tracks
- Get the utility’s own reportMadden Estates 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
- Decide if you want a filter at allA filter for taste or chlorine is a preference, not a need. The standards say what each kind can do.NSF/ANSI standards, decoded