Tap WaterIndex

← Massachusetts

Tap water quality report

Aquinnah Wampanoag

EPA monitoring tested this supplier for 26 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

26
contaminants tested
5
detected
89
people served
20
health-based violations
Massachusetts rankingsLead in MassachusettsPFAS in Massachusetts
Water source
Ground water
Ownership
Native American

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

20
health-based violations
248
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2011-07-01 → 2011-07-31
MCL Health-based Resolved 2011-07-01 → 2011-07-31
MCL Health-based Resolved 2011-07-01 → 2011-07-31
MCL Health-based Resolved 2011-07-01 → 2011-07-31
TT Health-based Resolved 2009-01-01 → 2009-06-30
TT Health-based Resolved 2009-01-01 → 2009-06-30
TT Health-based Resolved 2009-01-01 → 2009-06-30
TT Health-based Resolved 2009-01-01 → 2009-06-30
TT Health-based Resolved 2009-01-01 → 2009-06-30
TT Health-based Resolved 2009-01-01 → 2009-06-30

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 27/27 LCR 2025
Nitrate
550 µg/L 5.5%
of the EPA limit 10000 µg/L
 10/14 SYR4 2012–2018
Combined Radium (-226 And -228)
0.1000 pCi/L 2%
of the EPA limit 5 pCi/L
 1/1 SYR4 2012
Combined Uranium
1 µg/L 3.3%
of the EPA limit 30 µg/L
 1/1 SYR4 2012
Gross Alpha, Excl. Radon And U
0.1100 pCi/L 0.7%
of the EPA limit 15 pCi/L
 1/1 SYR4 2012
21 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneBenzeneChlorobenzeneCarbon TetrachlorideDichloromethaneEthylbenzeneStyreneTetrachloroethyleneTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Dave Zimmerman
Phone
5086452711
Email
[email protected]

Frequently asked questions about Aquinnah Wampanoag

Is Aquinnah Wampanoag tap water safe to drink?

EPA monitoring detected 5 contaminants in Aquinnah Wampanoag's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Aquinnah Wampanoag's water?

EPA monitoring detected Lead, Nitrate, Combined Radium (-226 And -228), Combined Uranium, Gross Alpha, Excl. Radon And U. The full list with the level and data source for each is above.

How many people does Aquinnah Wampanoag serve?

Aquinnah Wampanoag reports serving 89 people in Massachusetts, per its EPA record.

Has Aquinnah Wampanoag had any water quality violations?

The EPA has 248 violations on file for Aquinnah Wampanoag, of which 20 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.