Tap WaterIndex

← Massachusetts

Tap water quality report

Maynard, MA

EPA monitoring detected 23 contaminants across the 1 water supplier serving Maynard. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

1
water supplier
10,616
people served
23
contaminants found
Massachusetts rankings Lead in Massachusetts PFAS in Massachusetts

What was found in Maynard's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
391 µg/L 3.9%
of the EPA limit 10000 µg/L
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Copper
97.295 µg/L 7.5%
of the EPA limit 1300 µg/L
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
TTHM
97.15 µg/L 121%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Fluoride
76.15 µg/L 1.9%
of the EPA limit 4000 µg/L
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Chloroform
73.85 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
62 µg/L 103%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Barium
55 µg/L 2.8%
of the EPA limit 2000 µg/L
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Trichloroacetic Acid
45 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Bromodichloromethane
18.7 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Dichloroacetic Acid
17 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Arsenic
8.4 µg/L 84%
of the EPA limit 10 µg/L
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Dibromochloromethane
5.19 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Monochloroacetic Acid
3 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Dibromoacetic Acid
1.495 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Monobromoacetic Acid
1.21 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Bromoform
0.6000 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
Chlorobenzene
0.5000 µg/L 0.5%
of the EPA limit 100 µg/L
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2019
1/1 SYR4
PFOA
0.0071 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2024
1/1 UCMR-5
PFOS
0.0042 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2024
1/1 UCMR-5
Pfhxa
0.0040 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2024
1/1 UCMR-5
Pfpea
0.0037 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2024
1/1 UCMR-5
PFBS
0.0031 µg/L
No EPA limit set
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2024
1/1 UCMR-5
Lead
0.0024 mg/L 16%
of the EPA limit 0.0150 mg/L
Main supplier: MAYNARD DPW, WATER DIVISION · 10,616 people · 2025
1/1 LCR
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 the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Maynard

SupplierPopulation served
MAYNARD DPW, WATER DIVISION 10,616

Frequently asked questions about Maynard tap water

Is Maynard tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Maynard. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Maynard?

1 public water supplier report drinking-water monitoring for Maynard, Massachusetts to the EPA. Each is listed above with its population served.

What contaminants are in Maynard's water?

The contaminants EPA monitoring detected in Maynard include Nitrate, Copper, TTHM, Fluoride, Chloroform. The full list, with the level at the main supplier and the data source, is in the table above.

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.