What was found in ZIP 48103
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 1000 µg/L 10% of the EPA limit 10000 µg/L Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/4 | SYR4 |
| Nitrate-Nitrite | 1000 µg/L 10% of the EPA limit 10000 µg/L Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/4 | SYR4 |
| Copper | 382.55 µg/L 29% of the EPA limit 1300 µg/L Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/4 | SYR4 |
| Lead | 117.19 µg/L 781% of the EPA limit, at the 95th percentile of samples — 15 µg/L Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/4 | SYR4 |
| TTHM | 17.82 µg/L 22% of the EPA limit 80 µg/L Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/4 | SYR4 |
| Bromoform | 16.875 µg/L No EPA limit set Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/4 | SYR4 |
| Gross Beta Particle Activity | 5.74 pCi/L No EPA limit set Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.4 pCi/L 29% of the EPA limit 15 pCi/L Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/4 | SYR4 |
| Chromium | 2.1495 µg/L 2.1% of the EPA limit 100 µg/L Highest in the ZIP: KOHALA RANCH WATER CO. · 850 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0023 mg/L 15% of the EPA limit 0.0150 mg/L Main supplier: ANN ARBOR · 123,851 people · 2023
Highest in the ZIP: 0.0107 mg/L — KOHALA RANCH WATER CO. · 850 people · 2021 | 4/4 | LCR |
| Pfba | 0.0061 µg/L No EPA limit set Main supplier: ANN ARBOR · 123,851 people · 2023 | 1/4 | UCMR-5 |
| Pfpea | 0.0047 µg/L No EPA limit set Main supplier: ANN ARBOR · 123,851 people · 2023
Highest in the ZIP: 0.0049 µg/L — SCIO TOWNSHIP · 8,500 people · 2023 | 2/4 | UCMR-5 |
| Pfhpa | 0.0042 µg/L No EPA limit set Highest in the ZIP: SCIO TOWNSHIP · 8,500 people · 2023 | 1/4 | UCMR-5 |
| Pfhxa | 0.0035 µg/L No EPA limit set Main supplier: ANN ARBOR · 123,851 people · 2023
Highest in the ZIP: 0.0036 µg/L — SCIO TOWNSHIP · 8,500 people · 2023 | 2/4 | UCMR-5 |
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.
Water suppliers serving ZIP 48103
| Supplier | State | Population served |
|---|---|---|
| ANN ARBOR | MI | 123,851 |
| PITTSFIELD TOWNSHIP | MI | 24,500 |
| SCIO TOWNSHIP | MI | 8,500 |
| KOHALA RANCH WATER CO. | HI | 850 |
Frequently asked questions about ZIP 48103 tap water
Is the tap water in ZIP 48103 safe to drink?
EPA testing detected 14 contaminants across the water suppliers serving ZIP 48103. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 48103?
4 public water suppliers report EPA drinking-water monitoring for ZIP 48103. Each is listed above with its population served.
What contaminants are in ZIP 48103's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Copper, Lead, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.