Tap WaterIndex

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Tap water quality report

ZIP 19803 — Wilmington, DE

EPA monitoring across the 2 water suppliers serving ZIP 19803 in Wilmington, DE detected 38 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

2
water suppliers
208,471
people served
38
contaminants found

What was found in ZIP 19803

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

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
3415.8 µg/L 34%
of the EPA limit 10000 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
Highest in the ZIP: 3600 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2019
2/2 SYR4
Nitrate-Nitrite
3270.27 µg/L 33%
of the EPA limit 10000 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
Highest in the ZIP: 3600 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2019
2/2 SYR4
Fluoride
1145 µg/L 29%
of the EPA limit 4000 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
Highest in the ZIP: 1200 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2019
2/2 SYR4
Copper
337.25 µg/L 26%
of the EPA limit 1300 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2017
2/2 SYR4
TTHM
85.5 µg/L 107%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
2/2 SYR4
Chloroform
64.755 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
64.3 µg/L 107%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
2/2 SYR4
Barium
40.08 µg/L 2%
of the EPA limit 2000 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2015
Highest in the ZIP: 48.56 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2015
2/2 SYR4
Dichloroacetic Acid
33.89 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
2/2 SYR4
Lead
25.705 µg/L 171%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2017
2/2 SYR4
Trichloroacetic Acid
24.98 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
2/2 SYR4
Bromodichloromethane
17.4 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
Highest in the ZIP: 18 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2019
2/2 SYR4
Gross Beta Particle Activity
12.1 pCi/L
No EPA limit set
Highest in the ZIP: VEOLIA WATER DELAWARE, INC · 100,495 people · 2013
1/2 SYR4
Monochloroacetic Acid
8.455 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
2/2 SYR4
Dibromochloromethane
5 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
Highest in the ZIP: 5.48 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2019
2/2 SYR4
Chromium
2.52 µg/L 2.5%
of the EPA limit 100 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2015
Highest in the ZIP: 2.92 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2015
2/2 SYR4
Monobromoacetic Acid
2.135 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
2/2 SYR4
Dibromoacetic Acid
2.095 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
2/2 SYR4
Dalapon
2.035 µg/L 1%
of the EPA limit 200 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
2/2 SYR4
Bromoform
1.36 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
2/2 SYR4
Di(2-ethylhexyl) Phthalate
0.2795 µg/L 4.7%
of the EPA limit 6 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
Highest in the ZIP: 0.6100 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2017
2/2 SYR4
Arsenic
0.5000 µg/L 5%
of the EPA limit 10 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2015
Highest in the ZIP: 0.5950 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2015
2/2 SYR4
Combined Radium (-226 And -228)
0.4900 pCi/L 9.8%
of the EPA limit 5 pCi/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2016
2/2 SYR4
2,4-D
0.2850 µg/L 0.4%
of the EPA limit 70 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
2/2 SYR4
Atrazine
0.0310 µg/L 1%
of the EPA limit 3 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
Highest in the ZIP: 0.1000 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2017
2/2 SYR4
Simazine
0.0720 µg/L 1.8%
of the EPA limit 4 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
Highest in the ZIP: 0.0900 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2017
2/2 SYR4
Di(2-ethylhexyl) Adipate
0.0880 µg/L 0%
of the EPA limit 400 µg/L
Highest in the ZIP: VEOLIA WATER DELAWARE, INC · 100,495 people · 2017
1/2 SYR4
Hexachlorocyclopentadiene
0.0770 µg/L 0.2%
of the EPA limit 50 µg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2019
1/2 SYR4
Pfba
0.0141 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2024
Highest in the ZIP: 0.0406 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2023
2/2 UCMR-5
Pfpea
0.0322 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2024
2/2 UCMR-5
Pfhxa
0.0211 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2024
Highest in the ZIP: 0.0317 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2023
2/2 UCMR-5
Pfhpa
0.0084 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2024
Highest in the ZIP: 0.0277 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2023
2/2 UCMR-5
PFOA
0.0099 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2024
Highest in the ZIP: 0.0244 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2023
2/2 UCMR-5
PFNA
0.0116 µg/L
No EPA limit set
Highest in the ZIP: VEOLIA WATER DELAWARE, INC · 100,495 people · 2023
1/2 UCMR-5
Pfda
0.0047 µg/L
No EPA limit set
Highest in the ZIP: VEOLIA WATER DELAWARE, INC · 100,495 people · 2023
1/2 UCMR-5
Pfuna
0.0038 µg/L
No EPA limit set
Highest in the ZIP: VEOLIA WATER DELAWARE, INC · 100,495 people · 2023
1/2 UCMR-5
PFBS
0.0036 µg/L
No EPA limit set
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2024
Highest in the ZIP: 0.0037 µg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2023
2/2 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: WILMINGTON WATER DEPARTMENT · 107,976 people · 2023
Highest in the ZIP: 0.0020 mg/L — VEOLIA WATER DELAWARE, INC · 100,495 people · 2023
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 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.

Water suppliers serving ZIP 19803

SupplierStatePopulation served
WILMINGTON WATER DEPARTMENT DE 107,976
VEOLIA WATER DELAWARE, INC DE 100,495

Frequently asked questions about ZIP 19803 tap water

Is the tap water in ZIP 19803 safe to drink?

EPA testing detected 38 contaminants across the water suppliers serving ZIP 19803. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 19803?

2 public water suppliers report EPA drinking-water monitoring for ZIP 19803. Each is listed above with its population served.

What contaminants are in ZIP 19803's water?

EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Copper, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.