City of Yuma water quality
Yuma, AZ · serves 103,264 people (32,641 connections) · Surface water · Local government · EPA ID AZ0414024
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data.
- PFAS
- Not detectedNone of 29 PFAS found above EPA's reporting limits in 8 samples (2023–2025).
- Lithium
- Above screening levelHighest result 150 ppb. EPA uses 10 ppb to decide what to study further. It is not a health limit, and there is no federal limit for lithium. About 1 in 4 systems tested were above it.
- Lead
- Below action level1.1 ppb (parts per billion) at the 90th percentile: 9 in 10 homes sampled were at or below it. Action level 15 ppb, falling to 10 ppb in Nov 2027. Monitoring period ending Dec 2024. Your home's pipes can make yours higher.
- Violations
- Resolved23 health-based violations since 2016, most recently Mar 2022. 21 required an urgent public notice within 24 hours (the kind behind boil-water notices), most recently Mar 2022. What to do if you get a notice.
- Built before 1986, or not sure what your service line is made of? Check your service line and test your tap. Utility data can't show your pipes.
- Got a boil-water or do-not-drink notice? What each notice means and what to do.
- Tested your own tap? Compare your result with these numbers. Moving? Compare this system with another.
- Read City of Yuma's annual water quality report (Consumer Confidence Report). It lists every regulated contaminant tested and is usually on the utility's website or mailed with your bill, and you can also request it at (928) 373-4600. EPA: how to find it.
PFAS (“forever chemicals”)
EPA UCMR 5: 2 entry points tested Apr 2023 to Feb 2024. "Average" is the highest entry-point average (non-detects counted as zero), the way EPA compares UCMR 5 results to the limits. ppt = parts per trillion. These results do not determine compliance.
| Contaminant | Highest average |
|---|---|
| PFOA Not detected Limit 4 ppt | – |
| PFOS Not detected Limit 4 ppt | – |
| PFHxS Not detected Limit 10 ppt | – |
| PFNA Not detected Limit 10 ppt | – |
| HFPO-DA (GenX) Not detected Limit 10 ppt | – |
| Hazard Index (a combined score for PFHxS, PFNA, GenX and PFBS, where above 1 is over the limit) Not detected Limit 1 | – |
| PFBS Not detected Guideline 2,000 ppt | – |
| PFBA Not detected Guideline 6,000 ppt | – |
| PFHxA Not detected Guideline 3,000 ppt | – |
29 PFAS tested, 0 detected at least once. "Not detected" means below EPA's reporting limit (about 2 to 20 ppt depending on the chemical), not proven zero. PFAS not listed were not detected. The limits for PFHxS, PFNA, GenX and the Hazard Index were proposed for rescission in May 2026. That proposal is not final. Systems have until 2029 to meet the limits.
Lithium
Detected in 8 of 8 samples. Highest result 150 ppb. EPA's non-enforceable screening level is 10 ppb. Above screening level The screening level is how EPA decides what to study further, not a health limit. There is no federal limit for lithium and no filter is certified to remove it. About lithium.
Lead and copper
Latest 90th percentile: 1.1 ppb lead (Jan 2022 – Dec 2024). Below action level
| Monitoring period | Lead (90th pct.) |
|---|---|
| Jan 2022 – Dec 2024 | 1.1 ppb |
| Jan 2019 – Dec 2021 | 0.79 ppb |
| Jan 2016 – Dec 2018 | 1.1 ppb |
Earlier results (8)
| Jan 2013 – Dec 2015 | 0.81 ppb |
| Jan 2010 – Dec 2012 | 0.5 ppb |
| Jan 2009 – Dec 2011 | 0.73 ppb |
| Jan 2007 – Dec 2009 | 0.73 ppb |
| Jan 2006 – Dec 2008 | 0.75 ppb |
| Jan 2003 – Dec 2005 | 1.4 ppb |
| Jan 2002 – Dec 2004 | 1.3 ppb |
| Jan 2003 – Dec 2003 | 1 ppb |
Lead comes from pipes and fixtures, not the source water, so it varies home to home. The 90th percentile means 9 in 10 sampled homes were at or below it. More on lead.
Violations
| When | What happened |
|---|---|
| Jul 2020 – Mar 2022 21 times | Disinfectant (chlorine dioxide) levels went above the limit at the plant and in the pipes. Urgent public notice required What that means EPA record: Chlorine dioxide · Acute Maximum Residual Disinfectant Level · measured 1 mg/l (limit 0.8 mg/L) Resolved |
| Oct 2021 | The system did not remove enough organic matter, which reacts with chlorine to form disinfection byproducts. EPA record: Carbon, total · Treatment Technique Precursor Removal · measured 0.88 ratio (limit TT ) Resolved |
| Aug 2021 | The yearly average disinfectant level was above the limit. EPA record: Chlorine dioxide · Non-Acute MRDL (limit 0.8 mg/L) Resolved |
Health-based violations mean a contaminant exceeded a limit or a required treatment step was missed. Monitoring and reporting violations mean required tests or reports were late or missing, so the water's quality during that time is unknown. The total includes every violation in EPA's records, most of them paperwork.
Earlier EPA testing (2013–2020)
| Contaminant | Highest | Guideline |
|---|---|---|
| Manganese | 0.7 ppb | 300 ppb |
| Chromium-6 | 0.033 ppb | – |
| Chlorate | 400 ppb | 210 ppb |
| Vanadium | 3.6 ppb | 21 ppb |
| Molybdenum | 10 ppb | 40 ppb |
| Strontium | 2.1 ppm | 1.5 ppm |
Where it serves
ZIP codes the system reported serving: 85364, 85365
Nearby utilities
- Goodyear Water Department Goodyear · 135 mi · PFAS above limit
- City of Lake Havasu Lake Havasu City · 137 mi
- City of Avondale Avondale · 139 mi · PFAS above limit
- Liberty Water Lpsco Litchfield Park · 143 mi · PFAS above limit
- USAF Luke Air Force Base Litchfield Park · 143 mi · PFAS above limit
- EPCOR – Agua Fria Surprise · 144 mi
Questions
Is City of Yuma water safe to drink?
City of Yuma had 23 health-based violations since 2016, all since resolved. EPA testing found no PFAS above the federal limits. Federal data can't tell you about your own pipes: lead comes from service lines and plumbing, so test your tap if your home was built before 1986. For the official word, read the utility's annual Consumer Confidence Report.
Does City of Yuma water have PFAS?
EPA tested City of Yuma for 29 PFAS between Apr 2023 and Feb 2024 and none were detected above the reporting limits (about 2 to 20 ppt depending on the chemical).
What is the lead level in City of Yuma water?
The most recent 90th-percentile lead result for City of Yuma is 1.1 ppb, for the period ending Dec 2024. The federal action level is 15 ppb, falling to 10 ppb in November 2027. The 90th percentile means 9 in 10 homes sampled were at or below this number. Individual homes can be higher.
Check these numbers yourself
Every figure on this page comes from public EPA records. You don't have to take our word for it:
- EPA's own report for AZ0414024: violations, enforcement and inspections, straight from EPA.
- EPA UCMR 5 data: the PFAS and lithium results (search the file for PWSID AZ0414024).
- EPA SDWIS download: the lead results, population and violation records we use.
- The utility's annual water quality report (Consumer Confidence Report): ask City of Yuma at (928) 373-4600, or see EPA's guide to finding it.
Found something that doesn't match? Tell us and we'll check it against EPA's records. How we check our data.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.