Metals · 2024
Copper in Pomona, CA tap water
Pomona, CA's 2024 Copper measurement is below the federal limit of 1.3 mg/L (Action level).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
90th percentile Consumers' Taps | 0.18 mg/L | 1.3 mg/L Action level |
Reported level Miramar Groundwater Well #2 | Not detected mg/L | 1 mg/L MCL |
Reported level Miramar Groundwater Well #1 | Not detected mg/L | 1 mg/L MCL |
Range Miramar Effluent | Not detected mg/L | 1 mg/L MCL |
Reported level Miramar Groundwater Grand Well | Not detected mg/L | 1 mg/L MCL |
Range Pomona Effluent | Not detected mg/L | 1 mg/L MCL |
Reported level Pomona Groundwater | 0–0.01 mg/L | 1.3 mg/L Action level |
Range Pomona Groundwater | 0–0.01 mg/L | 1 mg/L MCL |
Reported level Miramar Effluent | Not detected mg/L | 1.3 mg/L Action level |
Reported level Weymouth Effluent | Not detected mg/L | 1.3 mg/L Action level |
Reported level Miramar Groundwater Well #1 | Not detected mg/L | 1.3 mg/L Action level |
90th percentile Consumers' Taps | 0.18 mg/L | 1.3 mg/L Action level |
Reported level Miramar Groundwater Well #2 | Not detected mg/L | 1.3 mg/L Action level |
Reported level Pomona Effluent | Not detected mg/L | 1.3 mg/L Action level |
Range Weymouth Effluent | Not detected mg/L | 1 mg/L MCL |
Verbatim from Pomona, CA's 2024 Consumer Confidence Report — source document ↗
About Copper
A metal that enters water from corroding household plumbing.
Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.
How Pomona, CA compares
5 of the 392 systems measuring Copper on The Water Map have it at or above the federal limit:
Nearby systems also reporting Copper:
People also ask
+Is there Copper in Pomona, CA tap water?
Yes — Pomona, CA's 2024 Consumer Confidence Report lists Copper at 0.18 mg/L. Pomona, CA's 2024 Copper measurement is below the federal limit of 1.3 mg/L (Action level).
+What's the federal limit for Copper in drinking water?
The federal Action level for Copper is 1.3 mg/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Copper?
A metal that enters water from corroding household plumbing. Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.
+Which other U.S. cities have Copper over the federal limit?
5 of the 392 systems on The Water Map measuring Copper report it at or above the federal limit. Examples include Town of Denton, MD, Oxnard, CA, High Point, NC.
+Where does this Copper measurement come from?
This page reproduces the Copper entry from the 2024 Consumer Confidence Report published by the Pomona, CA water utility — the annual drinking-water report every U.S. utility is required by federal law to publish. The original source document is archived at /water/ca/pomona/2024/source.