Is Colby tap water safe to drink?
- Hull, WI
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- Colby
The short answer for Colby
Recent public test data for Colby is limited. Check local utility reports and monitor updated EPA records for the latest water quality information.
The health risk for Colby
No specific notes available.
Certified filtration options for common tap-water contaminants.
No compounds above or close to EPA limits in available data.
View all tested compounds
WUWN_VS400 · Tested: July 2023
| Compound | Measurement | EPA Limit | Comparison |
|---|---|---|---|
| Nitrate + Nitrite | 9.530 mg/L | 1E+04 mg/L | 0.1% of limit |
| 2-Chloro-4-isopropylamino-6... | 0.116 µg/L | — | — |
| Acetochlor ESA | 0.056 µg/L | — | — |
| Alachlor ESA | 0.375 µg/L | — | — |
| Metolachlor ESA | 2.890 µg/L | — | — |
| Metolachlor OA | 0.276 µg/L | — | — |
Water utilities serving ZIP 54421
Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.
- COLBY WATERWORKSNo recent federal sampling
Frequently Asked Questions about ZIP 54421 Tap Water
What's in ZIP 54421 tap water?
Recent public test data for ZIP 54421 is limited. Check your local utility's Consumer Confidence Report for the most current information.
Who provides tap water in ZIP 54421?
Public records identify COLBY WATERWORKS as a primary water system associated with ZIP 54421. Service boundaries can vary by address, so confirm exact service with the utility.
When was ZIP 54421 tap water last tested?
The most recent test date used in this report is Unknown. EnviroClarity last refreshed this page on 2026-05-05.
Where can I find the official water quality report for ZIP 54421?
Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact COLBY WATERWORKS or visit their website for the latest official report covering ZIP 54421. The EPA also maintains a national CCR locator.
Do I still need a water filter in ZIP 54421?
Even when EPA-tracked compounds are within limits, some households use a certified filter for taste, odor, or to add a margin against trace contaminants below the reporting limit. Match any filter's certifications (NSF/ANSI 42, 53, 58, or P473) to the specific compounds you care about.
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Data reflects publicly reported utility records from EPA datasets and local utility disclosures. This information is educational and not medical advice.