Water Quality Report · Updated May 12, 2026
CITY OF YUMA
CITY OF YUMA delivers tap water graded D (61/100) by TapWaterSafety.org. The utility serves approximately 103,264 residents in YUMA, Arizona using surface water. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Arsenic significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. For questions, the utility can be reached at 928-373-4588.
Is YUMA tap water safe to drink?
CITY OF YUMA delivers tap water that earns a grade of D (61/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including haloacetic acids (haa9) significantly above health guideline.
The utility serves 103,264 residents in YUMA, drawing from surface water.
Public testing data identifies 8 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Arsenic, Total trihalomethanes (TTHMs), Haloacetic acids (HAA5), Radium, combined (-226 and -228), Chlorite, Nitrate and nitrite, Nitrate. 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.
Quick actions for YUMA 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 YUMA.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 23.7 ppb, 395x above the EWG health guideline of 0.06 ppb.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 1.48 ppb, 371x above the EWG health guideline of 0.004 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 53.5 ppb, 357x above the EWG health guideline of 0.15 ppb.
Contact CITY OF YUMA
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 YUMA
Filters matched to the specific contaminants in this water supply.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
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 61/100 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 |
23.7 ppb | 0.06 | — | — | — | — | — | 395× over |
| Arsenic Heavy metal |
1.48 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 371× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
53.5 ppb | 0.15 | 80.0 | 100 | — | — | — | 357× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
12.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 122× over |
| Radium, combined (-226 and -228) Radiological |
0.18 pCi/L | 0.05 | 5.0 | — | — | — | — | 3.7× over |
| Chlorite Disinfection byproduct |
146.9 ppb | 50.0 | 1000.0 | — | — | — | — | 2.9× over |
| Nitrate and nitrite Inorganic |
0.297 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.1× over |
| Nitrate Inorganic |
0.23 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 1.6× over |
| Bromochloromethane Other |
0.0563 ppb | 0.06 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
174.1 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Chromium (hexavalent) Heavy metal |
0.00406 ppb | 0.02 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
109.0 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Molybdenum Other |
5.43 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
2.36 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.512 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
1.15 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.392 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
90.3 ppb | — | — | — | — | — | — | 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 YUMA service area
This water system serves 1 community in Yuma County, Arizona. Click any city for its dedicated tap water quality page.
Find the right filter for YUMA water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.