Physical & aggregate
Chemical Oxygen Demand in U.S. tap water
2 public water systems across 2 U.S. states report Chemical Oxygen Demand in their annual Consumer Confidence Report. None currently sit at or above the federal limit.
Within the federal limit (1)
| Water system | Measured |
|---|---|
| West Jordan, UT 2024 annual report | Not detected mg/L |
Chemical Oxygen Demand by state
Every state where a public water system reports Chemical Oxygen Demand in its annual report, ranked by systems at or above the federal limit.
| State | Measuring | Over limit | Highest reading |
|---|---|---|---|
| Utah | 1 | 0 | Not detected mg/L · West Jordan, UT |
| Michigan | 1 | 0 | 2.8 mg/L · Warren, MI |
Frequently asked
+What is Chemical Oxygen Demand?
Chemical Oxygen Demand is a contaminant some U.S. public water utilities measure and report in their annual Consumer Confidence Report.
+Does Chemical Oxygen Demand have a federal limit in drinking water?
Chemical Oxygen Demand does not have an enforceable federal MCL. Utilities still report any measured levels in their annual Consumer Confidence Report.
+How many U.S. water systems have Chemical Oxygen Demand over the federal limit?
Zero of the 2 public water systems in The Water Map dataset currently report Chemical Oxygen Demand at or above its federal limit.
+Which states report the most Chemical Oxygen Demand in their drinking water?
No state currently has a system reporting Chemical Oxygen Demand at or above its federal limit in The Water Map dataset. Utah, Michigan have the most systems measuring it.
+How can I check if Chemical Oxygen Demand is in my city's tap water?
Search your city on The Water Map (https://www.thewatermap.com/) or browse the list on this page. Every U.S. public water utility is required to publish an annual Consumer Confidence Report that lists every contaminant it measured, including Chemical Oxygen Demand.