Drinking water quality
What's in Cedar Rapids, IA tap water
25 contaminants were measured in the Cedar Rapids, IA water system's most recent annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine | 1.9–3.8 mg/LRange | 4 mg/LMRDL | Approaching the limit |
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Bromodichloromethane | 0.7–1 ug/LRange | 0 ug/LMCLG | Detected — no federal limit |
| Chloroform | 1.3–2.5 ug/LRange | 70 ug/LMCLG | Within the limit |
| TTHM | 0–3.9 ug/LRange | 80 ug/LMRDL | Within the limit |
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chloride | 31.2–45.1 mg/LRange | 250 mg/LMCLG | Within the limit |
| Dichloroacetic acid | 2 ug/LAverage | 0 ug/LMCLG | Detected — no federal limit |
| Fluoride | 0.1–0.8 mg/LRange | 4 mg/LMCL | Within the limit |
| Monobromoacetic acid | 0–1 ug/LRange | None set | Detected — no federal limit |
| Nitrate | 0–9 mg/LRange | 10 mg/LMCL | Approaching the limit |
| Nitrite | 0–0.1 mg/LRange | 1 mg/LMCL | Within the limit |
| Sulfate | 25.5–71.2 mg/LRange | 250 mg/LMCLG | Within the limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Arsenic | 2.7Reported Level | None set | Detected — no federal limit |
| Copper | 45.4Reported Level | None set | Detected — no federal limit |
| Iron | 410Reported Level | None set | Detected — no federal limit |
| Lead | 0–24.1 ug/LRange | 15 ug/LAL | At or above the limit |
| Manganese | 479Reported Level | None set | Detected — no federal limit |
| Sodium | 16.4Reported Level | None set | Detected — no federal limit |
| Zinc | 9.8Reported Level | None set | Detected — no federal limit |
Microbial
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Escherichia coli (E. coli) | Not detectedReported Level | None set | None detected |
| Total Coliform | 16Reported Level | None set | Detected — no federal limit |
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TOC | 1.6–3.5Range | None set | Detected — no federal limit |
| Turbidity | 5 NTUReported Level | None set | Detected — no federal limit |
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Combined Radium | 0.6 pCi/LAverage | 5 pCi/LMCL | Within the limit |
| Radon | 297Reported Level | None set | Detected — no federal limit |
VOCs & pesticides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Atrazine | 0–0.5 ug/LRange | 3 ug/LMCL | Within the limit |
Every figure here is transcribed verbatim from Cedar Rapids, IA's annual Consumer Confidence Report, cross-checked by a second model, and approved by a person before publishing. Numbers are the utility's own — a water-quality report covers an entire service area, not a single address.