2024 Detroit Metro Airport (DTW) Regulated Detected Contaminants Table
| Lead and Copper Monitoring at the Customer's Tap in 2024 – Detroit Metro Airport (DTW) | |||||||||
| Regulated Contaminant | Unit | Year Sampled | Health Goal MCLG | Action Level (AL) | 90th Percentile Value* | Range of Individual Samples Results | Number of Samples Over AL | Major Sources in Drinking Water | |
|---|---|---|---|---|---|---|---|---|---|
| Lead | ppb | 2024 | 0 | 15 | 0 | 0 – 2.6 | 0 | Lead services lines, corrosion of household plumbing including fittings and fixtures; Erosion of natural deposits. | |
| Copper | ppm | 2024 | 1.3 | 1.3 | 0.5 | 0 - 0.66 | 0 | Corrosion of household plumbing systems; Erosion of natural deposits. | |
| *The 90th percentile value means 90 percent of the homes tested have lead and copper levels below the given 90th percentile value. If the 90th percentile value is above the AL additional requirements must be met. | |||||||||
| 2024 Disinfection By-Products - Monitoring in the Distribution System – Detroit Metro Airport (DTW) | |||||||||
| Regulated Contaminant | Test Date | Unit | Health Goal MRDLG | Allowed Level MRDL | Highest Level RAA | Range of Quarterly Results | Violation | Major Sources in Drinking Water | |
| Chlorine Residual | 2024 | ppm | 4 | 4 | 0.71 | 0.27 – 1.19 | No | Water additive used to control microbes | |
| Regulated Contaminant | Test Date | Unit | Health Goal MCLG | Allowed Level MCL | Highest Level LRAA | Range of Quarterly Results | Violation | Major Sources in Drinking Water | |
| (TTHM) Total Trihalomethanes | 2024 | ppb | n/a | 80 | 36 | 39 | No | By-product of drinking water chlorination | |
| (HAA5) Haloacetic Acids | 2024 | ppb | n/a | 60 | 9.9 | 9.9 | No | By-product of drinking water chlorination | |
| Regulated Contaminant | Test Date | Unit | Health Goal MCLG | Allowed Level MCL | # of Samples | Total Detections | Violation | Major Sources in Drinking Water | |
| Total Coliform | 2024 | MPN | ND | ND | 84 | 0 | No | Naturally present in the environment | |
| E.coli | 2024 | MPN | ND | ND | 84 | 0 | No | Human and animal fecal waste | |
These tables are based on tests conducted by the WCAA in the year 2024. The WCAA conducts tests throughout the year, only tests that show the presence of a substance or require special monitoring are presented in these tables. The data is representative of the water quality, but some may be more than one year old.