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Tap water quality report

Wellfleet, MA

EPA monitoring detected 9 contaminants across the 5 water suppliers serving Wellfleet. 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.

5
water suppliers
1,283
people served
9
contaminants found
Massachusetts rankings Lead in Massachusetts PFAS in Massachusetts

What was found in Wellfleet'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
1543.5 µg/L 15%
of the EPA limit 10000 µg/L
Main supplier: WELLFLEET MUNICIPAL WATER SYSTEM · 750 people · 2019
Highest in the city: 6700 µg/L — WELLFLEET APARTMENTS · 48 people · 2019
5/5 SYR4
Copper
3050 µg/L 235%
of the EPA limit, at the 95th percentile of samples — 1300 µg/L
Highest in the city: MASSASOIT HILLS TRAILER PARK · 120 people · 2016
4/5 SYR4
Fluoride
96 µg/L 2.4%
of the EPA limit 4000 µg/L
Highest in the city: PLEASANT WATER · 200 people · 2018
1/5 SYR4
Lead
58.4 µg/L 389%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Highest in the city: MASSASOIT HILLS TRAILER PARK · 120 people · 2016
1/5 SYR4
Barium
39.85 µg/L 2%
of the EPA limit 2000 µg/L
Highest in the city: MASSASOIT HILLS TRAILER PARK · 120 people · 2017
3/5 SYR4
Nitrite
25.75 µg/L 2.6%
of the EPA limit 1000 µg/L
Main supplier: WELLFLEET MUNICIPAL WATER SYSTEM · 750 people · 2017
1/5 SYR4
Antimony, Total
2 µg/L 33%
of the EPA limit 6 µg/L
Highest in the city: HARBORSIDE VILLAGE · 165 people · 2018
1/5 SYR4
Toluene
1.733 µg/L 0.2%
of the EPA limit 1000 µg/L
Highest in the city: MASSASOIT HILLS TRAILER PARK · 120 people · 2019
1/5 SYR4
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
Main supplier: WELLFLEET MUNICIPAL WATER SYSTEM · 750 people · 2023
Highest in the city: 0.0093 mg/L — MASSASOIT HILLS TRAILER PARK · 120 people · 2024
5/5 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 Wellfleet

SupplierPopulation served
WELLFLEET MUNICIPAL WATER SYSTEM 750
PLEASANT WATER 200
HARBORSIDE VILLAGE 165
MASSASOIT HILLS TRAILER PARK 120
WELLFLEET APARTMENTS 48

Frequently asked questions about Wellfleet tap water

Is Wellfleet tap water safe to drink?

EPA testing detected 9 contaminants in the water serving Wellfleet. 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 Wellfleet?

5 public water suppliers report drinking-water monitoring for Wellfleet, Massachusetts to the EPA. Each is listed above with its population served.

What contaminants are in Wellfleet's water?

The contaminants EPA monitoring detected in Wellfleet include Nitrate, Copper, Fluoride, Lead, Barium. 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.