Is Millis Water Dept Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Norfolk

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2012-05-01 → 2012-05-31
MCL	Health-based	Resolved	2012-05-01 → 2012-05-31
MCL	Health-based	Resolved	2010-07-01 → 2010-07-31
MCL	Health-based	Resolved	2010-07-01 → 2010-07-31
MCL	Health-based	Archived	1998-02-01 → 1998-02-28
MCL	Health-based	Archived	1993-11-01 → 1993-11-30
MR	Monitoring	Resolved	2017-07-01 → 2017-09-30
MR	Monitoring	Resolved	2017-07-01 → 2017-09-30
MR	Monitoring	Resolved	2016-03-01 → 2016-03-31
MR	Monitoring	Resolved	2016-03-01 → 2016-03-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
PFBS	0.0091 µg/L	2/8	2024
PFOA	0.0069 µg/L	2/8	2024
PFOS	0.0073 µg/L	2/8	2024
Pfhxa	0.0030 µg/L	1/8	2024
Pfpea	0.0030 µg/L	1/8	2024

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate	3218.5 µg/L 32% of the EPA limit 10000 µg/L worst single sample: 3760 µg/L	80/80	SYR4	2012–2019
TTHM	18.95 µg/L 24% of the EPA limit 80 µg/L worst single sample: 20.6 µg/L	42/52	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	6.5 µg/L 11% of the EPA limit 60 µg/L worst single sample: 7.1 µg/L	36/52	SYR4	2013–2019
Bromoform	8.01 µg/L No EPA limit set worst single sample: 8.6 µg/L	34/42	SYR4	2013–2019
Dibromochloromethane	7.09 µg/L No EPA limit set worst single sample: 8.75 µg/L	34/42	SYR4	2013–2019
Bromodichloromethane	5.434 µg/L No EPA limit set worst single sample: 5.8 µg/L	32/42	SYR4	2013–2019
Dibromoacetic Acid	2.8075 µg/L No EPA limit set worst single sample: 3.2 µg/L	26/40	SYR4	2013–2019
Chloroform	2.904 µg/L No EPA limit set worst single sample: 3.3 µg/L	25/42	SYR4	2013–2019
Lead	0.0015 mg/L 10% of the EPA limit 0.0150 mg/L	21/21	LCR	2025
Trichloroethylene	6.8835 µg/L 138% of the EPA limit, at the 95th percentile of samples — 5 µg/L worst single sample: 7.3 µg/L	18/75	SYR4	2012–2019
Tetrachloroethylene	1.12 µg/L 22% of the EPA limit 5 µg/L worst single sample: 1.2 µg/L	17/75	SYR4	2012–2019
Dichloroacetic Acid	2.348 µg/L No EPA limit set worst single sample: 3.16 µg/L	15/40	SYR4	2013–2019
Trichloroacetic Acid	1.731 µg/L No EPA limit set worst single sample: 2.27 µg/L	15/40	SYR4	2013–2019
Barium	41.44 µg/L 2.1% of the EPA limit 2000 µg/L worst single sample: 42 µg/L	8/8	SYR4	2012–2019
Fluoride	1330 µg/L 33% of the EPA limit 4000 µg/L worst single sample: 1400 µg/L	8/8	SYR4	2012–2019
cis-1,2-Dichloroethylene	0.8430 µg/L 1.2% of the EPA limit 70 µg/L worst single sample: 0.8500 µg/L	8/75	SYR4	2012–2019
Monochloroacetic Acid	1.68 µg/L No EPA limit set worst single sample: 1.8 µg/L	7/40	SYR4	2013–2019
1,1-Dichloroethylene	0.7000 µg/L 10% of the EPA limit 7 µg/L worst single sample: 0.7200 µg/L	3/75	SYR4	2012–2019
Copper	100 µg/L 7.7% of the EPA limit 1300 µg/L	1/1	SYR4	2014
Monobromoacetic Acid	0.5100 µg/L No EPA limit set	1/40	SYR4	2013–2019

77 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneToxapheneVinyl ChlorideXylenes, TotalLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: DAVE RACHMACIEJ
Phone: 5083765424
Email: [email protected]

Frequently asked questions about Millis Water Dept

Is Millis Water Dept tap water safe to drink?

EPA monitoring detected 25 contaminants in Millis Water Dept'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 Millis Water Dept's water?

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

How many people does Millis Water Dept serve?

Millis Water Dept reports serving 9,055 people in Massachusetts, per its EPA record.

Has Millis Water Dept had any water quality violations?

The EPA has 94 violations on file for Millis Water Dept, of which 6 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.