Is Dedham Westwood Water Dist. Tap Water Safe? Quality Report

Water source: SWP
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	2021-10-01 → 2021-12-31
MCL	Health-based	Resolved	2021-10-01 → 2021-12-31
MR	Monitoring	Archived	1994-06-01 → 1994-06-30
MR	Monitoring	Archived	1994-05-01 → 1994-05-31

PFAS detected

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

Contaminant	Max	Detection rate	Period
PFOA	0.0065 µg/L	4/8	2025
PFOS	0.0051 µg/L	3/8	2025
Pfpea	0.0059 µg/L	2/8	2025
Pfhxa	0.0041 µg/L	1/8	2025

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	76.415 µg/L 96% of the EPA limit 80 µg/L worst single sample: 96 µg/L	114/114	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	41.26 µg/L 69% of the EPA limit 60 µg/L worst single sample: 49 µg/L	113/114	SYR4	2012–2019
Bromodichloromethane	21.84 µg/L No EPA limit set worst single sample: 28.3 µg/L	104/104	SYR4	2013–2019
Chloroform	48.73 µg/L No EPA limit set worst single sample: 71.5 µg/L	104/104	SYR4	2013–2019
Dibromochloromethane	20.265 µg/L No EPA limit set worst single sample: 27.2 µg/L	104/104	SYR4	2013–2019
Trichloroacetic Acid	28.055 µg/L No EPA limit set worst single sample: 37.8 µg/L	102/104	SYR4	2013–2019
Dichloroacetic Acid	14.7 µg/L No EPA limit set worst single sample: 17.4 µg/L	101/104	SYR4	2013–2019
Dibromoacetic Acid	4.91 µg/L No EPA limit set worst single sample: 8.6 µg/L	70/104	SYR4	2013–2019
Bromoform	9.32 µg/L No EPA limit set worst single sample: 17.6 µg/L	49/104	SYR4	2013–2019
Nitrate	1460 µg/L 15% of the EPA limit 10000 µg/L worst single sample: 1630 µg/L	46/46	SYR4	2012–2019
Monochloroacetic Acid	8.7 µg/L No EPA limit set worst single sample: 13 µg/L	29/104	SYR4	2013–2019
Lead	0.0020 mg/L 13% of the EPA limit 0.0150 mg/L	17/17	LCR	2025
Fluoride	957.5 µg/L 24% of the EPA limit 4000 µg/L worst single sample: 960 µg/L	6/7	SYR4	2012–2018
Copper	384 µg/L 30% of the EPA limit 1300 µg/L worst single sample: 390 µg/L	5/11	SYR4	2013–2019
Asbestos	1 MFL 14% of the EPA limit 7 MFL	1/1	SYR4	2016

84 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, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: BLAKE D LUKIS
Phone: 7813297090
Email: [email protected]

Frequently asked questions about Dedham Westwood Water Dist.

Is Dedham Westwood Water Dist. tap water safe to drink?

EPA monitoring detected 19 contaminants in Dedham Westwood Water Dist.'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 Dedham Westwood Water Dist.'s water?

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

How many people does Dedham Westwood Water Dist. serve?

Dedham Westwood Water Dist. reports serving 41,630 people in Massachusetts, per its EPA record.

Has Dedham Westwood Water Dist. had any water quality violations?

The EPA has 4 violations on file for Dedham Westwood Water Dist., of which 2 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.