City water profile
Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Yuma, Arizona.
Median indexed hardness
390PPM
2 indexed ZIPs
Range 390–390 PPM
City summary
Yuma has 2 published ZIP profiles across Yuma County. The indexed median is 390 PPM, compared with 241 PPM across Arizona.
Among the 133 Arizonacities with an indexed median, Yuma ranks #12from highest to lowest. Across all 285 state ZIP profiles, available estimates run from 66.4to 1250 PPM.
The 390–390 PPM range shows how much the available ZIP estimates vary within the city label.
Hardness distribution
2 of 2 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.
Evidence quality
Confidence labels
Observation window: Jan 12, 2016 to Jun 10, 2026.
ZIP directory
Open a ZIP for site-level provenance and measurements.
Public water systems
PWSID AZ0414024
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID AZ0414004
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID AZ0414082
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID AZ0414099
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID AZ0414403
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID AZ0414098
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID AZ0414080
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID AZ0414322
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID AZ0414442
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID AZ0414039
The system names this served city; Census place overlap links the city to this ZCTA.
Compliance history
No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.
| Record | System | Period | Status |
|---|---|---|---|
| Revised Total Coliform Rule | AZ0414099 | Feb 1, 2026 | Archived |
| Combined Uranium | AZ0414080 | Jan 1, 2026 | Archived · health-based |
| Arsenic | AZ0414442 | Jan 1, 2026 | Archived · health-based |
| Lead and Copper Rule | AZ0414039 | Jan 1, 2026 | Resolved |
| Lead and Copper Rule | AZ0414095 | Jan 1, 2026 | Unaddressed |
| Combined Uranium | AZ0414075 | Jan 1, 2026 | Archived · health-based |
| Combined Uranium | AZ0414073 | Jan 1, 2026 | Archived · health-based |
| Lead and Copper Rule | AZ0414070 | Jan 1, 2026 | Unaddressed |
| Chlorine | AZ0414463 | Dec 1, 2025 | Resolved |
| Public Notice | AZ0414322 | Nov 15, 2025 | Unaddressed |
Practical next steps
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Questions people ask
The indexed city median is 390 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.
Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.
Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.