What EPA records show for Dartmouth Water Division
EPA MA4072000 · serves Dartmouth, MA · about 24,696 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
Dartmouth Water Division (EPA MA4072000)
What EPA records show for Dartmouth Water Division, as of October 14, 2026
4 health-based violations since July 1, 2021 in EPA records (EPA SDWIS).
Lead, 90th percentile: 7 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2025–Dec 31, 2025). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
This water system averaged above 4.0 ppt for PFOA or PFOS in EPA's UCMR 5 testing.
EPA's UCMR 5 testing looked for 30 contaminants here and found 7.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Dartmouth Water Division use chloramine?
EPA treatment records (state-reported) list chloramines for Dartmouth Water Division. EPA record
Reported results in EPA records (data as of Oct 14–15, 2026)
EPA's UCMR 5 testing looked for 30 contaminants here and found 7.
PFOS (a PFAS): found in 1 of 10 samples, average 5.1 ppt, highest 50.6 ppt (EPA UCMR 5 testing, Mar 2024–Dec 2024)
PFOA or PFOS averaged above 4.0 ppt in UCMR 5 testing
PFBS (a PFAS): found in 2 of 10 samples, average 2.9 ppt, highest 20.7 ppt (EPA UCMR 5 testing, Mar 2024–Dec 2024)
PFPeA (a PFAS): found in 1 of 10 samples, average 1.2 ppt, highest 11.8 ppt (EPA UCMR 5 testing, Mar 2024–Dec 2024)
PFBA (a PFAS): found in 1 of 10 samples, average 0.90 ppt, highest 9.4 ppt (EPA UCMR 5 testing, Mar 2024–Dec 2024)
PFHxA (a PFAS): found in 1 of 10 samples, average 0.80 ppt, highest 7.6 ppt (EPA UCMR 5 testing, Mar 2024–Dec 2024)
PFOA (a PFAS): found in 1 of 10 samples, average 0.40 ppt, highest 4.2 ppt (EPA UCMR 5 testing, Mar 2024–Dec 2024)
PFHpA (a PFAS): found in 1 of 10 samples, average 0.30 ppt, highest 3 ppt (EPA UCMR 5 testing, Mar 2024–Dec 2024)
Lead, 90th percentile: 7 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2025–Dec 31, 2025). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
Health-based violation: Total Coliform Rules, Revised Total Coliform Rule, Aug 2026–Sep 2026 (EPA SDWIS)
Health-based violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, Total Haloacetic Acids (HAA5), from Jan 2022, with no return-to-compliance action in EPA records (EPA SDWIS)
Health-based violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, Total Haloacetic Acids (HAA5), Oct 2021–Aug 2023 (EPA SDWIS)
Health-based violation: Stage 2 Disinfectants and Disinfection Byproducts Rule, Total Haloacetic Acids (HAA5), Jul 2021–Aug 2023 (EPA SDWIS)
Source: EPA SDWIS (ECHO SDWA bulk download), data as of Oct 14, 2026
Source: EPA UCMR 5 occurrence data, data as of Oct 15, 2026
These are EPA's public records for this water system, shown as of October 14, 2026. If you represent this utility, or think a record here is wrong, tell us: Report an error. If the error is in EPA's own records, your state drinking water program can correct it there, and this page updates at our next data refresh.
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