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Tap water quality report

Delhi, IA

EPA monitoring detected 19 contaminants across the 2 water suppliers serving Delhi. 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.

2
water suppliers
509
people served
19
contaminants found
Iowa rankings Lead in Iowa PFAS in Iowa

What was found in Delhi'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
6790 µg/L 68%
of the EPA limit 10000 µg/L
Main supplier: DELHI WATER SUPPLY · 420 people · 2019
1/2 SYR4
Fluoride
100 µg/L 2.5%
of the EPA limit 4000 µg/L
Main supplier: DELHI WATER SUPPLY · 420 people · 2012
Highest in the city: 240 µg/L — PENN CENTER INC · 89 people · 2013
2/2 SYR4
Copper
153.3 µg/L 12%
of the EPA limit 1300 µg/L
Main supplier: DELHI WATER SUPPLY · 420 people · 2018
2/2 SYR4
Barium
58.845 µg/L 2.9%
of the EPA limit 2000 µg/L
Main supplier: DELHI WATER SUPPLY · 420 people · 2012
1/2 SYR4
TTHM
36.675 µg/L 46%
of the EPA limit 80 µg/L
Main supplier: DELHI WATER SUPPLY · 420 people · 2019
1/2 SYR4
Chloroform
28.035 µg/L
No EPA limit set
Main supplier: DELHI WATER SUPPLY · 420 people · 2019
1/2 SYR4
Lead
13.49 µg/L 90%
of the EPA limit 15 µg/L
Main supplier: DELHI WATER SUPPLY · 420 people · 2018
2/2 SYR4
Total Haloacetic Acids (HAA5)
12.4555 µg/L 21%
of the EPA limit 60 µg/L
Main supplier: DELHI WATER SUPPLY · 420 people · 2019
1/2 SYR4
Bromodichloromethane
4.761 µg/L
No EPA limit set
Main supplier: DELHI WATER SUPPLY · 420 people · 2019
1/2 SYR4
Dichloroacetic Acid
4.6125 µg/L
No EPA limit set
Main supplier: DELHI WATER SUPPLY · 420 people · 2019
1/2 SYR4
Monochloroacetic Acid
4.588 µg/L
No EPA limit set
Main supplier: DELHI WATER SUPPLY · 420 people · 2019
1/2 SYR4
Selenium
2.9 µg/L 5.8%
of the EPA limit 50 µg/L
Main supplier: DELHI WATER SUPPLY · 420 people · 2012
1/2 SYR4
Dibromochloromethane
2.772 µg/L
No EPA limit set
Main supplier: DELHI WATER SUPPLY · 420 people · 2019
1/2 SYR4
Trichloroacetic Acid
2.1645 µg/L
No EPA limit set
Main supplier: DELHI WATER SUPPLY · 420 people · 2019
1/2 SYR4
Bromoform
1.2 µg/L
No EPA limit set
Main supplier: DELHI WATER SUPPLY · 420 people · 2019
1/2 SYR4
Dibromoacetic Acid
1.126 µg/L
No EPA limit set
Main supplier: DELHI WATER SUPPLY · 420 people · 2019
1/2 SYR4
Combined Radium (-226 And -228)
1.02 pCi/L 20%
of the EPA limit 5 pCi/L
Main supplier: DELHI WATER SUPPLY · 420 people · 2018
1/2 SYR4
Antimony, Total
0.4000 µg/L 6.7%
of the EPA limit 6 µg/L
Main supplier: DELHI WATER SUPPLY · 420 people · 2012
1/2 SYR4
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
Main supplier: DELHI WATER SUPPLY · 420 people · 2024
Highest in the city: 0.0110 mg/L — PENN CENTER INC · 89 people · 2024
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. 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 Delhi

SupplierPopulation served
DELHI WATER SUPPLY 420
PENN CENTER INC 89

Frequently asked questions about Delhi tap water

Is Delhi tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Delhi. 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 Delhi?

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

What contaminants are in Delhi's water?

The contaminants EPA monitoring detected in Delhi include Nitrate, Fluoride, Copper, Barium, TTHM. 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.