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Tap water quality report

Newark, DE

EPA monitoring detected 37 contaminants across the 2 water suppliers serving Newark. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
40,338
people served
37
contaminants found
Delaware rankings Lead in Delaware PFAS in Delaware

What was found in Newark's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
7100 µg/L 71%
of the EPA limit 10000 µg/L
 1/2 SYR4
Nitrate-Nitrite
7100 µg/L 71%
of the EPA limit 10000 µg/L
 1/2 SYR4
Fluoride
2410 µg/L 60%
of the EPA limit 4000 µg/L
 1/2 SYR4
Copper
893 µg/L 69%
of the EPA limit 1300 µg/L
 1/2 SYR4
Barium
213 µg/L 11%
of the EPA limit 2000 µg/L
 1/2 SYR4
TTHM
89.4 µg/L 112%
of the EPA limit, in the worst sample — 80 µg/L
 1/2 SYR4
Chloroform
71.3 µg/L
No EPA limit set
 1/2 SYR4
Total Haloacetic Acids (HAA5)
66 µg/L 110%
of the EPA limit, in the worst sample — 60 µg/L
 1/2 SYR4
Lead
42.2 µg/L 281%
of the EPA limit, in the worst sample — 15 µg/L
 1/2 SYR4
Dichloroacetic Acid
41 µg/L
No EPA limit set
 1/2 SYR4
Trichloroacetic Acid
25 µg/L
No EPA limit set
 1/2 SYR4
Bromodichloromethane
21 µg/L
No EPA limit set
 1/2 SYR4
Monochloroacetic Acid
12.5 µg/L
No EPA limit set
 1/2 SYR4
Dibromochloromethane
10.2 µg/L
No EPA limit set
 1/2 SYR4
Tetrachloroethylene
4.2 µg/L 84%
of the EPA limit 5 µg/L
 1/2 SYR4
Chromium
3.6 µg/L 3.6%
of the EPA limit 100 µg/L
 1/2 SYR4
Bromoform
2.81 µg/L
No EPA limit set
 1/2 SYR4
Dibromoacetic Acid
2.3 µg/L
No EPA limit set
 1/2 SYR4
1,2-Dichloropropane
0.5100 µg/L 10%
of the EPA limit 5 µg/L
 1/2 SYR4
Trichloroethylene
0.3500 µg/L 7%
of the EPA limit 5 µg/L
 1/2 SYR4
Di(2-ethylhexyl) Phthalate
0.3400 µg/L 5.7%
of the EPA limit 6 µg/L
 1/2 SYR4
Chlordane
0.2000 µg/L 10%
of the EPA limit 2 µg/L
 1/2 SYR4
Atrazine
0.1600 µg/L 5.3%
of the EPA limit 3 µg/L
 1/2 SYR4
cis-1,2-Dichloroethylene
0.1400 µg/L 0.2%
of the EPA limit 70 µg/L
 1/2 SYR4
Di(2-ethylhexyl) Adipate
0.1160 µg/L 0%
of the EPA limit 400 µg/L
 1/2 SYR4
Combined Radium (-226 And -228)
0.0908 pCi/L 1.8%
of the EPA limit 5 pCi/L
 1/2 SYR4
PFOA
0.0253 µg/L
No EPA limit set
 1/2 UCMR-5
Hexachlorocyclopentadiene
0.0250 µg/L 0.1%
of the EPA limit 50 µg/L
 1/2 SYR4
Heptachlor Epoxide
0.0140 µg/L 7%
of the EPA limit 0.2000 µg/L
 1/2 SYR4
Pfhxa
0.0132 µg/L
No EPA limit set
 1/2 UCMR-5
Pfpea
0.0126 µg/L
No EPA limit set
 1/2 UCMR-5
Pfba
0.0112 µg/L
No EPA limit set
 1/2 UCMR-5
Pfhpa
0.0079 µg/L
No EPA limit set
 1/2 UCMR-5
PFOS
0.0075 µg/L
No EPA limit set
 1/2 UCMR-5
PFBS
0.0066 µg/L
No EPA limit set
 1/2 UCMR-5
PFHXS
0.0055 µg/L
No EPA limit set
 1/2 UCMR-5
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 2/2 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 single worst sample on record — 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 Newark

SupplierPopulation served
NEWARK WATER DEPARTMENT 40,000
ASCOT LANDING SUBDIVISION 338

Frequently asked questions about Newark tap water

Is Newark tap water safe to drink?

EPA testing detected 37 contaminants in the water serving Newark. 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 Newark?

2 public water suppliers report drinking-water monitoring for Newark, Delaware to the EPA. Each is listed above with its population served.

What contaminants are in Newark's water?

The contaminants EPA monitoring detected in Newark include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. The full list, with the highest level found 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.