Tap Water Quality Report
Tap water quality in BEAVERTON, Oregon
Tap water in BEAVERTON, Oregon receives a grade of B (85/100) from TapWaterSafety.org. It's served by 2 public water systems, primarily TUALATIN VALLEY WATER DISTRICT. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in BEAVERTON's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utilities serving BEAVERTON.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 24.4 ppb, 407x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 24.3 ppb, 243x above the EWG health guideline of 0.1 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 33.2 ppb, 221x above the EWG health guideline of 0.15 ppb.
EPA compliance record
Official U.S. EPA records for TUALATIN VALLEY WATER DISTRICT (system ID OR4100665) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Water systems serving BEAVERTON
BEAVERTON is served by 2 public water systems. Click any utility to see its complete grade card and treatment plant contact info.
TUALATIN VALLEY WATER DISTRICT
- Haloacetic acids (HAA9) significantly above health guideline
- Haloacetic acids (HAA5) significantly above health guideline
- Total trihalomethanes (TTHMs) significantly above health guideline
BEAVERTON, CITY OF
- Haloacetic acids (HAA9) significantly above health guideline
- Total trihalomethanes (TTHMs) significantly above health guideline
- Haloacetic acids (HAA5) significantly above health guideline
Recommended filters for BEAVERTON
Filters matched to the specific contaminants in BEAVERTON's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in BEAVERTON's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
30.8 ppb | 0.06 | — | — | — | — | — | 513× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
24.3 ppb | 0.1 | 60.0 | 60 | — | — | — | 243× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
33.2 ppb | 0.15 | 80.0 | 100 | — | — | — | 221× over |
| Chromium (hexavalent) Heavy metal |
0.237 ppb | 0.02 | — | — | — | — | — | 12× over |
| Nitrate Inorganic |
0.273 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.9× over |
| Nitrate and nitrite Inorganic |
0.203 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.4× over |
| Vanadium Other |
3.17 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
18.8 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
2.14 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Barium Heavy metal |
6.2 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Hexachlorocyclopentadiene* Other |
0.0167 ppb | 2.0 | 50.0 | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0374 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.547 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from TUALATIN VALLEY WATER DISTRICT.