Is Concord Water Dept Tap Water Safe? Quality Report

Water source: Surface 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

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	2022-07-01 → 2022-09-30
MCL	Health-based	Archived	2019-07-01 → 2019-09-30
MCL	Health-based	Archived	1999-09-01 → 1999-09-30
MCL	Health-based	Archived	1995-08-01 → 1995-08-31
MR	Monitoring	Archived	1994-09-01 → 1994-09-30
MR	Monitoring	Archived	1994-08-01 → 1994-08-31
MR	Monitoring	Archived	1994-07-01 → 1994-07-31
MR	Monitoring	Archived	1994-06-01 → 1994-06-30
MR	Monitoring	Archived	1994-05-01 → 1994-05-31
MR	Monitoring	Resolved	1992-07-01

PFAS detected

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

Contaminant	Max	Detection rate	Period
Pfhxa	0.0045 µg/L	5/11	2024
PFOA	0.0060 µg/L	4/11	2024
Pfpea	0.0062 µg/L	4/11	2024
PFBS	0.0094 µg/L	3/11	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	49.66 µg/L 62% of the EPA limit 80 µg/L worst single sample: 82 µg/L	158/159	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	26.5 µg/L 44% of the EPA limit 60 µg/L worst single sample: 74 µg/L	156/160	SYR4	2012–2019
Nitrate	2354.5 µg/L 24% of the EPA limit 10000 µg/L worst single sample: 2650 µg/L	118/138	SYR4	2012–2019
Bromodichloromethane	11 µg/L No EPA limit set worst single sample: 16 µg/L	84/84	SYR4	2014–2019
Chloroform	36.955 µg/L No EPA limit set worst single sample: 61 µg/L	84/84	SYR4	2014–2019
Dibromochloromethane	11 µg/L No EPA limit set worst single sample: 14 µg/L	84/84	SYR4	2014–2019
Bromoform	6.452 µg/L No EPA limit set worst single sample: 8.5 µg/L	77/84	SYR4	2014–2019
Dibromoacetic Acid	4.11 µg/L No EPA limit set worst single sample: 5.2 µg/L	76/84	SYR4	2014–2019
Dichloroacetic Acid	11.458 µg/L No EPA limit set worst single sample: 36 µg/L	72/84	SYR4	2014–2019
Trichloroacetic Acid	28 µg/L No EPA limit set worst single sample: 31 µg/L	64/84	SYR4	2014–2019
Fluoride	1100 µg/L 28% of the EPA limit 4000 µg/L worst single sample: 1200 µg/L	28/31	SYR4	2012–2019
Barium	36.7 µg/L 1.8% of the EPA limit 2000 µg/L worst single sample: 39 µg/L	24/31	SYR4	2012–2019
Monobromoacetic Acid	1.17 µg/L No EPA limit set worst single sample: 1.8 µg/L	19/84	SYR4	2014–2019
Monochloroacetic Acid	4.25 µg/L No EPA limit set worst single sample: 4.7 µg/L	19/84	SYR4	2014–2019
Bromate	11.4 µg/L 114% of the EPA limit, at the 95th percentile of samples — 10 µg/L worst single sample: 13 µg/L	17/25	SYR4	2012–2019
Lead	0.0051 mg/L 34% of the EPA limit 0.0150 mg/L	14/14	LCR	2023
Copper	2.69 µg/L 0.2% of the EPA limit 1300 µg/L worst single sample: 2.7 µg/L	2/12	SYR4	2013

83 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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: DARIN LAFALAM
Phone: 9783183250
Email: [email protected]

Frequently asked questions about Concord Water Dept

Is Concord Water Dept tap water safe to drink?

EPA monitoring detected 21 contaminants in Concord 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 Concord Water Dept's water?

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

How many people does Concord Water Dept serve?

Concord Water Dept reports serving 18,788 people in Massachusetts, per its EPA record.

Has Concord Water Dept had any water quality violations?

The EPA has 13 violations on file for Concord Water Dept, of which 4 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.