Water Quality Report · Updated October 07, 2026
CITY OF YUBA CITY
CITY OF YUBA CITY delivers tap water graded B (75/100) by TapWaterSafety.org. The utility serves approximately 70,256 residents in YUBA CITY, California using surface water. 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. For questions, the utility can be reached at 530-822-4759.
Is YUBA CITY tap water safe to drink?
CITY OF YUBA CITY delivers tap water that earns a grade of B (75/100) from TapWaterSafety.org — a good rating, with only minor concerns relative to health-based guidelines.
The utility serves 70,256 residents in YUBA CITY, drawing from surface water.
Public testing data identifies 9 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Haloacetic acids (HAA5), Total trihalomethanes (TTHMs), Trichloroacetic acid, Chloroform, Bromodichloromethane, Dichloroacetic acid, Arsenic, Chromium (hexavalent). For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
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.
Quick actions for YUBA CITY residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for CITY OF 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.
Contact CITY OF YUBA CITY
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for YUBA CITY
Filters matched to the specific contaminants in this 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.
Score breakdown
This utility's overall score of 75/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
CITY OF YUBA CITY service area
This water system serves 1 community in Sutter County, California. Click any city for its dedicated tap water quality page.
Find the right filter for YUBA CITY water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.