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Tap water quality report

Otis Air National Guard Base

EPA monitoring tested this supplier for 103 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

103
contaminants tested
16
detected
6,000
people served
16
health-based violations
Massachusetts rankingsLead in MassachusettsPFAS in Massachusetts
Water source
Ground water
Ownership
Federal government
Counties served
Barnstable

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.

16
health-based violations
23
violations on file
1
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2024-10-17
MCL Health-based Resolved 2021-09-01 → 2021-09-30
MCL Health-based Resolved 2021-09-01 → 2021-09-30
MCL Health-based Resolved 2014-08-01 → 2014-08-31
MCL Health-based Resolved 2014-08-01 → 2014-08-31
MCL Health-based Resolved 2013-09-01 → 2013-09-30
MCL Health-based Resolved 2013-09-01 → 2013-09-30
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2005-10-01 → 2005-10-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0015 mg/L 10%
of the EPA limit 0.0150 mg/L
 20/20 LCR 2024
Nitrate
1920 µg/L 19%
of the EPA limit 10000 µg/L
 14/16 SYR4 2012–2019
TTHM
33.2 µg/L 42%
of the EPA limit 80 µg/L
 14/14 SYR4 2012–2019
Chloroform
12.8 µg/L
No EPA limit set
 11/11 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
5.86 µg/L 9.8%
of the EPA limit 60 µg/L
 11/14 SYR4 2012–2019
Bromodichloromethane
8.64 µg/L
No EPA limit set
 10/11 SYR4 2013–2019
Dibromochloromethane
9.01 µg/L
No EPA limit set
 10/11 SYR4 2013–2019
Bromoform
3.14 µg/L
No EPA limit set
 9/11 SYR4 2013–2019
Dichloroacetic Acid
3.67 µg/L
No EPA limit set
 7/11 SYR4 2013–2019
Dibromoacetic Acid
2.14 µg/L
No EPA limit set
 5/11 SYR4 2013–2019
Fluoride
1150 µg/L 29%
of the EPA limit 4000 µg/L
 4/4 SYR4 2012–2018
Trichloroacetic Acid
4.24 µg/L
No EPA limit set
 3/11 SYR4 2013–2019
Barium
16 µg/L 0.8%
of the EPA limit 2000 µg/L
 2/4 SYR4 2012–2018
Monochloroacetic Acid
1.62 µg/L
No EPA limit set
 2/11 SYR4 2013–2019
Antimony, Total
2 µg/L 33%
of the EPA limit 6 µg/L
 1/4 SYR4 2012–2018
Copper
32 µg/L 2.5%
of the EPA limit 1300 µg/L
 1/1 SYR4 2013
87 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CHESTER FERNANDEZ
Phone
5089684671
Email
chester.fernandez.1@US.AF.MIL

Frequently asked questions about Otis Air National Guard Base

Is Otis Air National Guard Base tap water safe to drink?

EPA monitoring detected 16 contaminants in Otis Air National Guard Base'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 Otis Air National Guard Base's water?

EPA monitoring detected Lead, Nitrate, TTHM, Chloroform, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Otis Air National Guard Base serve?

Otis Air National Guard Base reports serving 6,000 people in Massachusetts, per its EPA record.

Has Otis Air National Guard Base had any water quality violations?

The EPA has 23 violations on file for Otis Air National Guard Base, of which 16 are health-based (a contaminant limit or required treatment was breached) and 1 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.