Tap Water Quality Report
Tap water quality in DAVENPORT, Iowa
Tap water in DAVENPORT, Iowa receives a grade of D (64/100) from TapWaterSafety.org. It's served by IOWA-AMERICAN WTR CO-DAVENPORT. The most significant water quality concerns are: PFAS contamination; Haloacetic acids (HAA9) significantly above health guideline; Total PFOS and PFOA significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in DAVENPORT's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving DAVENPORT.
PFAS contamination
Severe concernPerfluorooctane sulfonate (PFOS), Perfluorooctanoic acid (PFOA) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 28.2 ppb, 471x above the EWG health guideline of 0.06 ppb.
Total PFOS and PFOA significantly above health guideline
Moderate concernTotal PFOS and PFOA detected at 1.87 ppt, 267x above the EWG health guideline of 0.007 ppt.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 22.3 ppb, 223x above the EWG health guideline of 0.1 ppb.
EPA compliance record
Official U.S. EPA records for IOWA-AMERICAN WTR CO-DAVENPORT (system ID IA8222001) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for DAVENPORT
Filters matched to the specific contaminants in DAVENPORT's water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in DAVENPORT's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
28.2 ppb | 0.06 | — | — | — | — | — | 471× over |
| Total PFOS and PFOA PFAS |
1.87 ppt | 0.007 | — | 100 | 100 | 0.007 | — | 267× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
22.3 ppb | 0.1 | 60.0 | 60 | — | — | — | 223× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
28.7 ppb | 0.15 | 80.0 | 100 | — | — | — | 191× over |
| Bromodichloromethane Disinfection byproduct |
5.8 ppb | 0.06 | — | — | — | — | — | 97× over |
| Trichloroacetic acid Disinfection byproduct |
8.89 ppb | 0.1 | — | — | — | — | — | 89× over |
| Dichloroacetic acid Disinfection byproduct |
13.3 ppb | 0.2 | — | — | — | — | — | 66× over |
| Chloroform Disinfection byproduct |
22.5 ppb | 0.4 | — | — | — | — | — | 56× over |
| Nitrate Inorganic |
2.35 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 17× over |
| Perfluorooctanoic acid (PFOA) PFAS |
1.54 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 17× over |
| Chlorite Disinfection byproduct |
231.0 ppb | 50.0 | 1000.0 | — | — | — | — | 4.6× over |
| Dibromochloromethane Disinfection byproduct |
0.396 ppb | 0.1 | — | — | — | — | — | 4.0× over |
| Chromium (hexavalent) Heavy metal |
0.075 ppb | 0.02 | — | — | — | — | — | 3.8× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.629 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 2.1× over |
| Atrazine Pesticide/Herbicide |
0.1 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.183 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Vanadium Other |
0.8 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
2.11 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
8.08 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.139 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
1.37 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.256 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0789 ppb | 1500.0 | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from IOWA-AMERICAN WTR CO-DAVENPORT.