Is Shenandoah, IA Tap Water Safe? Quality & Contaminants

What was found in Shenandoah'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.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate	5830 µg/L 58% of the EPA limit 10000 µg/L Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2019	1/1	SYR4
Fluoride	660 µg/L 17% of the EPA limit 4000 µg/L Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2013	1/1	SYR4
Copper	350 µg/L 27% of the EPA limit 1300 µg/L Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2019	1/1	SYR4
TTHM	29.299999999999997 µg/L 37% of the EPA limit 80 µg/L Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2019	1/1	SYR4
Lithium	13 µg/L No EPA limit set Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2023	1/1	UCMR-5
Dibromochloromethane	11 µg/L No EPA limit set Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2019	1/1	SYR4
Bromoform	8.004999999999999 µg/L No EPA limit set Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2019	1/1	SYR4
Bromodichloromethane	7.879999999999998 µg/L No EPA limit set Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2019	1/1	SYR4
Total Haloacetic Acids (HAA5)	7 µg/L 12% of the EPA limit 60 µg/L Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2019	1/1	SYR4
Chloroform	4.644999999999998 µg/L No EPA limit set Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2019	1/1	SYR4
Dibromoacetic Acid	3 µg/L No EPA limit set Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2019	1/1	SYR4
Lead	2.95 µg/L 20% of the EPA limit 15 µg/L Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2019	1/1	SYR4
Dichloroacetic Acid	2.9 µg/L No EPA limit set Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2019	1/1	SYR4
Monobromoacetic Acid	2 µg/L No EPA limit set Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2019	1/1	SYR4
Trichloroacetic Acid	2 µg/L No EPA limit set Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2019	1/1	SYR4
Lead	0.00050 mg/L 3.3% of the EPA limit 0.0150 mg/L Main supplier: SHENANDOAH WATER DEPT · 4,925 people · 2025	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 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 Shenandoah

Supplier	Population served
SHENANDOAH WATER DEPT	4,925

Frequently asked questions about Shenandoah tap water

Is Shenandoah tap water safe to drink?

EPA testing detected 16 contaminants in the water serving Shenandoah. 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 Shenandoah?

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

What contaminants are in Shenandoah's water?

The contaminants EPA monitoring detected in Shenandoah include Nitrate, Fluoride, Copper, TTHM, Lithium. 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.