What was found in Spirit Lake'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 |
|---|---|---|---|
| Fluoride | 990 µg/L 25% of the EPA limit 4000 µg/L Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2014 | 1/1 | SYR4 |
| Nitrate | 970 µg/L 9.7% of the EPA limit 10000 µg/L Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| Copper | 172 µg/L 13% of the EPA limit 1300 µg/L Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| TTHM | 93.05 µg/L 116% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| Chloroform | 77 µg/L No EPA limit set Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 38 µg/L 63% of the EPA limit 60 µg/L Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 23.1 µg/L No EPA limit set Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| Lithium | 19 µg/L No EPA limit set Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2023 | 1/1 | UCMR-5 |
| Bromodichloromethane | 13.05 µg/L No EPA limit set Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 10.05 µg/L No EPA limit set Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| Lead | 6.15 µg/L 41% of the EPA limit 15 µg/L Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 4.7 µg/L No EPA limit set Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 4 µg/L No EPA limit set Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| Dalapon | 1.385 µg/L 0.7% of the EPA limit 200 µg/L Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2015 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1 µg/L No EPA limit set Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| Xylenes, Total | 0.6000 µg/L 0% of the EPA limit 10000 µg/L Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| Bromoform | 0.5000 µg/L No EPA limit set Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2019 | 1/1 | SYR4 |
| Pfba | 0.0056 µg/L No EPA limit set Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2023 | 1/1 | UCMR-5 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: SPIRIT LAKE WATERWORKS · 6,167 people · 2025 | 1/1 | LCR |
Water suppliers serving Spirit Lake
| Supplier | Population served |
|---|---|
| SPIRIT LAKE WATERWORKS | 6,167 |
Frequently asked questions about Spirit Lake tap water
Is Spirit Lake tap water safe to drink?
EPA testing detected 19 contaminants in the water serving Spirit Lake. 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 Spirit Lake?
1 public water supplier report drinking-water monitoring for Spirit Lake, Iowa to the EPA. Each is listed above with its population served.
What contaminants are in Spirit Lake's water?
The contaminants EPA monitoring detected in Spirit Lake include Fluoride, Nitrate, Copper, TTHM, Chloroform. 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.