- Serves
- 11,368
- Connections
- 3,981
- Water source
- Surface water bought from another system
- Based in
- Millbury, MA
- County
- Worcester
- Owner
- Private
PWSID MA2186000 · EPA data
Read this first
- PFOA was found in two of 10 samples, highest 15.8 ppt. Above the 4.0 ppt legal limit in at least one sample. Compliance is judged on a running annual average, not one sample.
- PFOS was found in two of 10 samples, highest 6.2 ppt. Above the 4.0 ppt legal limit in at least one sample. Compliance is judged on a running annual average, not one sample.
No health-based violations on file since 2016. EPA lists 2 monitoring or reporting violations, which are paperwork and testing lapses rather than water quality findings.
What handles itWhat was found, stop by stop
- Below the health goal
- Above the health goal
- Above the legal limit
- No federal data
At the source
EPA UCMR 5 sampled this utility for 29 PFAS and lithium from March 21, 2023 to Dec. 13, 2023. Each tick under a result’s line is one sample where it was found, dated when you point at it.
NSF’s PFAS claims are tested to below 20 ppt. EPA’s limit is 4.0 ppt, and EPA says no certification yet shows a filter reaching its levels.
- Health goal zeroLegal limit 4.015.8
Above the 4.0 ppt legal limit in at least one sample. Compliance is judged on a running annual average, not one sample.
NSF/ANSI 53 · Look for: PFOA ReductionSame claim, other certifiers’ wording: Total PFAS Reduction; Perfluorooctanoic Acid (PFOA)
NSF/ANSI 58 · Look for: Perfluorooctanoic Acid (PFOA)
- Health goal zeroLegal limit 4.06.2
Above the 4.0 ppt legal limit in at least one sample. Compliance is judged on a running annual average, not one sample.
NSF/ANSI 53 · Look for: PFOS ReductionSame claim, other certifiers’ wording: Total PFAS Reduction; Perfluorooctane Sulfonate (PFOS)
NSF/ANSI 58 · Look for: Perfluorooctane Sulfonate (PFOS)
- Hazard Index benchmark 2,0003.7
Below EPA’s hazard index benchmark of 2,000 ppt. PFBS has no legal limit or health goal of its own.
NSF/ANSI 53 · Look for: Total PFAS Reduction
Also found, with no federal limit
EPA measured these PFAS to learn how often they occur. None has a legal limit or a health goal yet.
Compound Highest sample Found in Certification claim PFBA 15.9 ppt 3 of 10 None covers it PFPeA 10.3 ppt 6 of 10 None covers it PFHxA 8.6 ppt 3 of 10 None covers it PFHpA 5.8 ppt 1 of 10 NSF/ANSI 53: Total PFAS Reduction In treatment
No federal results for this stop. Disinfection byproduct, chlorine and fluoride levels are in Aquarion Water Company, Millbury’s own annual report, which it must send you every year.
In the pipes
No lead and copper results on file with EPA for this utility.
At your tap
The last stretch is your own plumbing. A certified lab test is the only way to know what reaches your glass. Lead in your water: what to do
Tested and not found
Below EPA’s minimum reporting level in every sample taken from March 21, 2023 to Dec. 13, 2023. Not found means not measured above that level, which is not the same as zero.
All 24 compounds tested and not found
- 11Cl-PF3OUdS
- 4:2 FTS
- 6:2 FTS
- 8:2 FTS
- 9Cl-PF3ONS
- ADONA
- HFPO-DA (GenX)
- Lead
- Lithium
- NEtFOSAA
- NFDHA
- NMeFOSAA
- PFDA
- PFDoA
- PFEESA
- PFHpS
- PFHxS
- PFMBA
- PFMPA
- PFNA
- PFPeS
- PFTA
- PFTrDA
- PFUnA
Violations since 2016
No health-based violations on file with EPA since 2016. There are 2 monitoring or reporting violations: a sample missed, late or not reported.
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
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
ZeroWater 10 Cup Pitcher (ZP-010)
Pitcher
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53checked Oct. 4, 2026
Certified for: PFOA, PFOS
Aquasana Claryum Direct Connect (AQ-MF-1)
Under-sink carbon
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 4, 2026
Certified for: PFOA, PFOS
Under-sink reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58checked Oct. 4, 2026
Certified for: PFOA, PFOS
Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: PFOA, PFOS
What this report cannot tell you
- Levels of everything else. Federal bulk data carries results for PFAS, lithium, lead and copper, and violations for the rest. Nitrate, arsenic, disinfection byproducts and other levels are in Aquarion Water Company, Millbury’s own annual report, which it must send you every year.
- 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.
- Anything after the latest data. SDWIS data is from 2026 Q2; UCMR 5 samples are from March 21, 2023 to Dec. 13, 2023.
Other Massachusetts utilities
- MWRA2.6 million
- Boston Water and Sewer Commission (MWRA)675,647
- Worcester Dpwp, Water Supply Division206,518
- Springfield Water and Sewer Commission169,170
- Lowell Regional Water Utility120,418
- Cambridge Water Department118,214
- Quincy Water Dept. (MWRA)106,000
- Brockton Water Department105,788
- Inima USA / Aquaria LLC105,643
- Lynn Water and Sewer Comm101,253
- City of New Bedford Dpi101,079
- Falmouth Water Dept97,551
Sources
- EPA UCMR 5 occurrence data, file of Aug. 27, 2026
- EPA SDWA bulk download (SDWIS federal data), 2026 Q2
- Limits and goals: each contaminant’s page, with its EPA source.
- How this page is built: methodology.