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Tap water quality report

Tiffin, IA

EPA monitoring detected 7 contaminants across the 2 water suppliers serving Tiffin. 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
7,750
people served
7
contaminants found
Iowa rankings Lead in Iowa PFAS in Iowa

What was found in Tiffin'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
Fluoride
1100 µg/L 28%
of the EPA limit 4000 µg/L
Main supplier: TIFFIN WATER SUPPLY · 7,577 people · 2017
1/2 SYR4
Copper
1075 µg/L 83%
of the EPA limit 1300 µg/L
Main supplier: TIFFIN WATER SUPPLY · 7,577 people · 2017
1/2 SYR4
Lead
12.9 µg/L 86%
of the EPA limit 15 µg/L
Main supplier: TIFFIN WATER SUPPLY · 7,577 people · 2017
1/2 SYR4
Combined Radium (-226 And -228)
3.32 pCi/L 66%
of the EPA limit 5 pCi/L
Main supplier: TIFFIN WATER SUPPLY · 7,577 people · 2017
1/2 SYR4
Monochloroacetic Acid
2.95 µg/L
No EPA limit set
Main supplier: TIFFIN WATER SUPPLY · 7,577 people · 2019
1/2 SYR4
Bromoform
0.5000 µg/L
No EPA limit set
Main supplier: TIFFIN WATER SUPPLY · 7,577 people · 2019
1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: TIFFIN WATER SUPPLY · 7,577 people · 2023
Highest in the city: 0.0040 mg/L — IADU CLEAR MHP LLC · 173 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 Tiffin

SupplierPopulation served
TIFFIN WATER SUPPLY 7,577
IADU CLEAR MHP LLC 173

Frequently asked questions about Tiffin tap water

Is Tiffin tap water safe to drink?

EPA testing detected 7 contaminants in the water serving Tiffin. 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 Tiffin?

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

What contaminants are in Tiffin's water?

The contaminants EPA monitoring detected in Tiffin include Fluoride, Copper, Lead, Combined Radium (-226 And -228), Monochloroacetic Acid. 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.