Is Warrenton tap water safe to drink?
- Astoria CCD, OR
- Warrenton
The short answer for Warrenton
Warrenton tap water has 2 detected contaminants, currently below EPA limits (tested November 2024). Arsenic measured closest to the threshold. See the full compound-by-compound report.
The health risk for Warrenton
- PFAS or other chemicals detected; no confirmed exceedances in multiple samples.
Arsenic was detected below EPA limits. A certified filter can still add an extra layer of protection.
Here's what actually removes PFAS from your water
The right filter eliminates PFAS at the tap. But not all filters do - and the type you choose matters for your home.
Common pitchers like Brita do not remove PFAS. You need a filter independently certified to NSF P473 (for pitcher filters) or NSF/ANSI 58 (for reverse osmosis systems). All three options below carry the relevant certification.
No compounds above or close to EPA limits in available data.
View all tested compounds
Treatment Plant · Tested: Multiple dates
| Compound | Measurement | EPA Limit | Comparison |
|---|---|---|---|
| lithium | <9.000 µg/L | 10 µg/L | Below limit |
| PFHxS | <0.003 µg/L | 0.004 µg/L | Below limit |
| HFPO-DA | <0.005 µg/L | 0.01 µg/L | Below limit |
| PFNA | <0.004 µg/L | 0.01 µg/L | Below limit |
| PFHxA | <0.003 µg/L | 3 µg/L | Below limit |
| PFBA | <0.005 µg/L | 6 µg/L | Below limit |
| 11Cl-PF3OUdS | <0.005 µg/L | 0.005 µg/L | Below limit |
| 4:2 FTS | <0.003 µg/L | 0.003 µg/L | Below limit |
| 6:2 FTS | <0.005 µg/L | 0.005 µg/L | Below limit |
| 8:2 FTS | <0.005 µg/L | 0.005 µg/L | Below limit |
| 9Cl-PF3ONS | <0.002 µg/L | 0.002 µg/L | Below limit |
| ADONA | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFBS | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFDA | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFDoA | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFHpA | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFHpS | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFOA | <0.004 µg/L | 0.004 µg/L | Below limit |
| PFOS | <0.004 µg/L | 0.004 µg/L | Below limit |
| PFPeA | <0.003 µg/L | 0.003 µg/L | Below limit |
| PFTrDA | <0.007 µg/L | 0.007 µg/L | Below limit |
| PFUnA | <0.002 µg/L | 0.002 µg/L | Below limit |
Warrenton Landfill Monitoring Well 3 · Tested: November 2024
| Compound | Measurement | EPA Limit | Comparison |
|---|---|---|---|
| Arsenic | 0.061 mg/L | 10 mg/L | 0.6% of limit |
| Nitrate + Nitrite | 0.024 mg/L | 1E+04 mg/L | 0.0% of limit |
| Alkalinity, total | 13.000 mg/L | — | — |
| Aluminum | 0.204 mg/L | — | — |
| Ammonia | 21.600 mg/L | — | — |
| Biochemical oxygen demand, ... | 0.100 mg/L | — | — |
| Boron | 0.110 mg/L | — | — |
| Cadmium | 0.033 mg/L | — | — |
| Calcium | 26.200 mg/L | — | — |
| Chemical oxygen demand | 31.000 mg/L | — | — |
| Chloride | 33.600 mg/L | — | — |
| Chlorobenzene | 1.240 µg/L | — | — |
| Hardness, Ca, Mg | 37.700 mg/L | — | — |
| Iron | 0.398 mg/L | — | — |
| Magnesium | 2.790 mg/L | — | — |
| Manganese | 0.084 mg/L | — | — |
| Mercury | 4.880 ng/L | — | — |
| Organic carbon | 5.630 mg/L | — | — |
| Oxidation reduction potenti... | -138.000 mV | — | — |
| p-Dichlorobenzene | 0.940 µg/L | — | — |
| Potassium | 2.410 mg/L | — | — |
| Silica | 24.300 mg/L | — | — |
| Sodium | 14.200 mg/L | — | — |
| Sulfate | 5.540 mg/L | — | — |
| Total dissolved solids | 108.000 mg/L | — | — |
| Total suspended solids | 94.000 mg/L | — | — |
| Vanadium | 0.005 mg/L | — | — |
Water utilities serving ZIP 97146
Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.
- WARRENTON, CITY OFSome concern
Frequently Asked Questions about ZIP 97146 Tap Water
What's in ZIP 97146 tap water?
ZIP 97146 has 2 detected contaminants below EPA limits in this dataset. Arsenic measured closest to its guideline.
Will boiling ZIP 97146 tap water remove Arsenic?
Boiling tap water can kill many pathogens, but it does not remove most chemical contaminants tracked in EPA monitoring. Several dissolved contaminants can even concentrate as water evaporates. For the chemical contaminants reported in ZIP 97146, a certified filter is more reliable.
Do basic pitcher filters remove Arsenic?
Basic pitcher filters are typically rated for chlorine, taste, and odor (NSF/ANSI 42), not for the broader list of contaminants tracked in EPA monitoring. Match the certification (NSF/ANSI 42, 53, 58, or P473) to the specific compounds listed in this report before assuming a filter helps.
Who provides tap water in ZIP 97146?
Public records identify WARRENTON, CITY OF as a primary water system associated with ZIP 97146. Service boundaries can vary by address, so confirm exact service with the utility.
When was ZIP 97146 tap water last tested?
The most recent test date used in this report is January 2024. EnviroClarity last refreshed this page on 2026-05-04.
Where can I find the official water quality report for ZIP 97146?
Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact WARRENTON, CITY OF or visit their website for the latest official report covering ZIP 97146. The EPA also maintains a national CCR locator.
Check another ZIP code
Nearby ZIP reports
Data reflects publicly reported utility records from EPA datasets and local utility disclosures. This information is educational and not medical advice.