Is Plymouth tap water safe to drink?
The short answer for Plymouth
Recent public test data for Plymouth is limited. Check local utility reports and monitor updated EPA records for the latest water quality information.
The health risk for Plymouth
No specific notes available.
Certified filtration options for common tap-water contaminants.
| Compound | Measurement | EPA Limit | Comparison |
|---|---|---|---|
| Arsenic Tested: May 2025 · Lower Umatilla Basin GWMA UMA096 |
12.700 µg/L | 10 µg/L | 27% above limit |
View all tested compounds
Lower Umatilla Basin GWMA UMA096 · Tested: Multiple dates
| Compound | Measurement | EPA Limit | Comparison |
|---|---|---|---|
| Arsenic | 12.700 µg/L | 10 µg/L | 27% above limit |
| Uranium | 12.900 µg/L | 30 µg/L | 43% of limit |
| Chromium | 1.740 µg/L | 100 µg/L | 2% of limit |
| Nitrate + Nitrite | 36.000 mg/L | 1E+04 mg/L | 0.4% of limit |
| Atrazine | 4.940 ng/L | 3000 ng/L | 0.2% of limit |
| 2-Chloro-4-isopropylamino-6... | 65.500 ng/L | — | — |
| Alkalinity, total | 240.000 mg/L | — | — |
| Ammonia | 0.022 mg/L | — | — |
| Boron | 63.300 µg/L | — | — |
| Bromide | 0.100 mg/L | — | — |
| Calcium | 94.300 mg/L | — | — |
| Chloride | 38.900 mg/L | — | — |
| Fluoride | 0.480 mg/L | — | — |
| Hardness, Ca, Mg | 410.000 mg/L | — | — |
| Imazapyr | 53.900 ng/L | — | — |
| Iron | 52.400 µg/L | — | — |
| Magnesium | 42.500 mg/L | — | — |
| Manganese | 2.240 µg/L | — | — |
| Nitrogen | 35.400 mg/L | — | — |
| Organic carbon | 1.070 mg/L | — | — |
| Potassium | 6.890 mg/L | — | — |
| Selenium | 1.460 µg/L | — | — |
| Sodium | 36.700 mg/L | — | — |
| Sucralose | 51.000 ng/L | — | — |
| Sulfate | 72.700 mg/L | — | — |
| Total dissolved solids | 686.000 mg/L | — | — |
| Total Phosphorus, mixed forms | 0.020 mg/L | — | — |
| Vanadium | 36.200 µg/L | — | — |
Water utilities serving ZIP 99346
Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.
- PLYMOUTH WATER DISTRICTNo recent federal sampling
Frequently Asked Questions about ZIP 99346 Tap Water
What's in ZIP 99346 tap water?
Recent public test data for ZIP 99346 is limited. Check your local utility's Consumer Confidence Report for the most current information.
Who provides tap water in ZIP 99346?
Public records identify PLYMOUTH WATER DISTRICT as a primary water system associated with ZIP 99346. Service boundaries can vary by address, so confirm exact service with the utility.
When was ZIP 99346 tap water last tested?
The most recent test date used in this report is Unknown. EnviroClarity last refreshed this page on 2026-05-04.
Where can I find the official water quality report for ZIP 99346?
Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact PLYMOUTH WATER DISTRICT or visit their website for the latest official report covering ZIP 99346. The EPA also maintains a national CCR locator.
Do I still need a water filter in ZIP 99346?
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.