Is Maynard Dpw, Water Division Tap Water Safe? Quality Report

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

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

285

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2016-07-01 → 2016-09-30
MCL	Health-based	Resolved	2016-07-01 → 2016-09-30
MCL	Health-based	Resolved	2016-04-01 → 2016-06-30
MCL	Health-based	Resolved	2016-04-01 → 2016-06-30
MCL	Health-based	Resolved	2016-01-01 → 2016-03-31
MCL	Health-based	Resolved	2016-01-01 → 2016-03-31
MCL	Health-based	Resolved	2015-10-01 → 2015-12-31
MCL	Health-based	Resolved	2015-10-01 → 2015-12-31
MCL	Health-based	Resolved	2015-10-01 → 2015-12-31
MCL	Health-based	Archived	1999-10-01 → 1999-10-31

PFAS detected

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

Contaminant	Max	Detection rate	Period
Pfhxa	0.0040 µg/L	2/6	2024
PFOA	0.0071 µg/L	2/6	2024
Pfpea	0.0037 µg/L	2/6	2024
PFBS	0.0031 µg/L	1/6	2024
PFOS	0.0042 µg/L	1/6	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
TTHM	97.15 µg/L 121% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 160 µg/L	131/131	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	62 µg/L 103% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 110 µg/L	129/131	SYR4	2012–2019
Trichloroacetic Acid	45 µg/L No EPA limit set worst single sample: 91 µg/L	125/128	SYR4	2012–2019
Bromodichloromethane	18.7 µg/L No EPA limit set worst single sample: 24 µg/L	124/124	SYR4	2012–2019
Chloroform	73.85 µg/L No EPA limit set worst single sample: 130 µg/L	124/124	SYR4	2012–2019
Dibromochloromethane	5.19 µg/L No EPA limit set worst single sample: 6.3 µg/L	123/124	SYR4	2012–2019
Dichloroacetic Acid	17 µg/L No EPA limit set worst single sample: 20 µg/L	114/128	SYR4	2012–2019
Monochloroacetic Acid	3 µg/L No EPA limit set worst single sample: 4.2 µg/L	34/128	SYR4	2012–2019
Lead	0.0024 mg/L 16% of the EPA limit 0.0150 mg/L	28/28	LCR	2025
Nitrate	391 µg/L 3.9% of the EPA limit 10000 µg/L worst single sample: 400 µg/L	24/48	SYR4	2012–2019
Dibromoacetic Acid	1.495 µg/L No EPA limit set worst single sample: 1.6 µg/L	22/128	SYR4	2012–2019
Monobromoacetic Acid	1.21 µg/L No EPA limit set worst single sample: 1.3 µg/L	19/128	SYR4	2012–2019
Copper	97.295 µg/L 7.5% of the EPA limit 1300 µg/L worst single sample: 99.7 µg/L	14/20	SYR4	2012–2019
Arsenic	8.4 µg/L 84% of the EPA limit 10 µg/L worst single sample: 10 µg/L	9/24	SYR4	2012–2019
Barium	55 µg/L 2.8% of the EPA limit 2000 µg/L worst single sample: 56 µg/L	6/6	SYR4	2012–2019
Fluoride	76.15 µg/L 1.9% of the EPA limit 4000 µg/L worst single sample: 77 µg/L	2/6	SYR4	2012–2019
Bromoform	0.6000 µg/L No EPA limit set	1/124	SYR4	2012–2019
Chlorobenzene	0.5000 µg/L 0.5% of the EPA limit 100 µg/L	1/51	SYR4	2012–2019

80 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-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: MICHAEL HATCH
Phone: 9788971317
Email: [email protected]

Frequently asked questions about Maynard Dpw, Water Division

Is Maynard Dpw, Water Division tap water safe to drink?

EPA monitoring detected 23 contaminants in Maynard Dpw, Water Division'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 Maynard Dpw, Water Division's water?

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

How many people does Maynard Dpw, Water Division serve?

Maynard Dpw, Water Division reports serving 10,616 people in Massachusetts, per its EPA record.

Has Maynard Dpw, Water Division had any water quality violations?

The EPA has 285 violations on file for Maynard Dpw, Water Division, of which 16 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.