Tap Water Quality Report
Tap water quality in YUBA CITY, California
Tap water in YUBA CITY, California receives a grade of C (75/100) from TapWaterSafety.org. It's served by CITY OF YUBA CITY. 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; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in YUBA CITY's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving YUBA CITY.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 28.7 ppb, 479x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 36.2 ppb, 362x above the EWG health guideline of 0.1 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 52.4 ppb, 349x above the EWG health guideline of 0.15 ppb.
Arsenic detected
Moderate concernArsenic detected at 0.136 ppb.
EPA compliance record
Official U.S. EPA records for CITY OF YUBA CITY (system ID CA5110002) 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.
Recommended filters for YUBA CITY
Filters matched to the specific contaminants in YUBA CITY'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.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
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 YUBA CITY'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 |
28.7 ppb | 0.06 | — | — | — | — | — | 479× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
36.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 362× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
52.4 ppb | 0.15 | 80.0 | 100 | — | — | — | 349× over |
| Trichloroacetic acid Disinfection byproduct |
12.8 ppb | 0.1 | — | — | — | — | — | 128× over |
| Chloroform Disinfection byproduct |
47.5 ppb | 0.4 | — | — | — | — | — | 119× over |
| Bromodichloromethane Disinfection byproduct |
4.68 ppb | 0.06 | — | — | — | — | — | 78× over |
| Dichloroacetic acid Disinfection byproduct |
12.4 ppb | 0.2 | — | — | — | — | — | 62× over |
| Arsenic Heavy metal |
0.136 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 34× over |
| Chromium (hexavalent) Heavy metal |
0.141 ppb | 0.02 | — | — | — | — | — | 7.1× over |
| Nitrate Inorganic |
0.129 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Vanadium Other |
0.968 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.383 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.188 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0649 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.638 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 CITY OF YUBA CITY.