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Tap water quality report

Carroll, IA

EPA monitoring detected 14 contaminants across the 1 water supplier serving Carroll. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
10,184
people served
14
contaminants found
Iowa rankings Lead in Iowa PFAS in Iowa

What was found in Carroll'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
Fluoride
1100 µg/L 28%
of the EPA limit 4000 µg/L
 1/1 SYR4
Copper
1060 µg/L 82%
of the EPA limit 1300 µg/L
 1/1 SYR4
Nitrite
200 µg/L 20%
of the EPA limit 1000 µg/L
 1/1 SYR4
Barium
157 µg/L 7.9%
of the EPA limit 2000 µg/L
 1/1 SYR4
Lithium
53 µg/L
No EPA limit set
 1/1 UCMR-5
Lead
9.9 µg/L 66%
of the EPA limit 15 µg/L
 1/1 SYR4
Total Haloacetic Acids (HAA5)
8.79 µg/L 15%
of the EPA limit 60 µg/L
 1/1 SYR4
Monochloroacetic Acid
6.98 µg/L
No EPA limit set
 1/1 SYR4
Dichloroacetic Acid
2.78 µg/L
No EPA limit set
 1/1 SYR4
Arsenic
1.8 µg/L 18%
of the EPA limit 10 µg/L
 1/1 SYR4
Chloroform
1.62 µg/L
No EPA limit set
 1/1 SYR4
Combined Radium (-226 And -228)
1.13 pCi/L 23%
of the EPA limit 5 pCi/L
 1/1 SYR4
Trichloroacetic Acid
0.9100 µg/L
No EPA limit set
 1/1 SYR4
Lead
0.0080 mg/L 53%
of the EPA limit 0.0150 mg/L
 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 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 Carroll

SupplierPopulation served
CARROLL MUNICIPAL WATER SUPPLY 10,184

Frequently asked questions about Carroll tap water

Is Carroll tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Carroll. 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 Carroll?

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

What contaminants are in Carroll's water?

The contaminants EPA monitoring detected in Carroll include Fluoride, Copper, Nitrite, Barium, Lithium. 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.