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Tap water quality report

Town of Avon

EPA monitoring tested this supplier for 103 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

103
contaminants tested
19
detected
4,777
people served
10
health-based violations
Massachusetts rankingsLead in MassachusettsPFAS in Massachusetts
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.

10
health-based violations
87
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2016-06-01 → 2016-06-30
TT Health-based Resolved 2016-06-01 → 2016-06-30
TT Health-based Resolved 2016-06-01 → 2016-06-30
MCL Health-based Resolved 2010-11-01 → 2010-11-30
MCL Health-based Resolved 2010-11-01 → 2010-11-30
TT Health-based Archived 2010-05-01 → 2010-05-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
TT Health-based Resolved 1996-01-01
TT Health-based Resolved 1996-01-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFOA 0.0051 µg/L 2/4 2023
PFOS 0.0060 µg/L 2/4 2023

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
2700 µg/L 27%
of the EPA limit 10000 µg/L
worst single sample: 3000 µg/L
36/36 SYR4 2012–2019
Bromodichloromethane
18.15 µg/L
No EPA limit set
worst single sample: 19 µg/L
18/18 SYR4 2012–2019
Bromoform
6.135 µg/L
No EPA limit set
worst single sample: 6.9 µg/L
18/18 SYR4 2012–2019
Chloroform
17.15 µg/L
No EPA limit set
worst single sample: 18 µg/L
18/18 SYR4 2012–2019
Dibromochloromethane
17 µg/L
No EPA limit set
 18/18 SYR4 2012–2019
TTHM
55.25 µg/L 69%
of the EPA limit 80 µg/L
worst single sample: 59.6 µg/L
16/16 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
8.8 µg/L 15%
of the EPA limit 60 µg/L
worst single sample: 10.1 µg/L
14/18 SYR4 2012–2019
Lead
0.0014 mg/L 9.3%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2023
Dibromoacetic Acid
4.085 µg/L
No EPA limit set
worst single sample: 4.8 µg/L
12/18 SYR4 2012–2019
Trichloroacetic Acid
2.2 µg/L
No EPA limit set
 10/18 SYR4 2012–2019
Barium
103.6 µg/L 5.2%
of the EPA limit 2000 µg/L
worst single sample: 106 µg/L
9/10 SYR4 2012–2018
Fluoride
100 µg/L 2.5%
of the EPA limit 4000 µg/L
 8/10 SYR4 2012–2018
Dichloroacetic Acid
3.5 µg/L
No EPA limit set
worst single sample: 3.6 µg/L
6/18 SYR4 2012–2019
Copper
252.68 µg/L 19%
of the EPA limit 1300 µg/L
worst single sample: 264 µg/L
2/4 SYR4 2015–2017
Cyanide
280 µg/L 140%
of the EPA limit, at the 95th percentile of samples — 200 µg/L
 1/10 SYR4 2012–2018
Cadmium
0.2000 µg/L 4%
of the EPA limit 5 µg/L
 1/10 SYR4 2012–2018
Monochloroacetic Acid
1.5 µg/L
No EPA limit set
 1/18 SYR4 2012–2019
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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MICHAEL DERIENZO
Phone
5085880414
Email
[email protected]

Frequently asked questions about Town of Avon

Is Town of Avon tap water safe to drink?

EPA monitoring detected 19 contaminants in Town of Avon'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 Town of Avon's water?

EPA monitoring detected Nitrate, Bromodichloromethane, Bromoform, Chloroform, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Town of Avon serve?

Town of Avon reports serving 4,777 people in Massachusetts, per its EPA record.

Has Town of Avon had any water quality violations?

The EPA has 87 violations on file for Town of Avon, of which 10 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.