Peoria, Arizona
Peoria Water Quality
Peoria water meets federal drinking water standards on a West Valley mix that was about 57 percent CAP in 2024 — different from Tempe's SRP-first year, and different again from Phoenix proper.
In 2024 Peoria reported arsenic averaging 5.8 ppb, TTHM averaging 51.7 ppb, and chromium averaging 11 ppb — all while meeting federal limits. The CAP-heavy West Valley mix is the local fact.
The short answer
Peoria tap water is treated to federal standards by the City of Peoria, public water system AZ0407096. The 2024 Consumer Confidence Report describes a mix of about 57 percent CAP Colorado River water, 35 percent SRP Salt and Verde, and 8 percent wells, with regulated detections for arsenic, TTHM, HAA5, chromium and nitrate that stayed under their federal Maximum Contaminant Levels.
Reverse osmosis addresses dissolved contaminants at the tap; activated carbon addresses disinfection byproducts; a softener addresses hardness when a tap test confirms it. Buying the wrong one is the expensive mistake, which is why the useful first step is a test at your own tap.
Get a free test
Tell us your Peoria-area address. We confirm coverage first, then schedule a licensed technician to test at your tap — no charge, no obligation.
What filtration does — and does not
Sediment, carbon, softening and reverse osmosis each address a different part of the Peoria profile. Buying the wrong stage is the expensive mistake a tap test is meant to prevent.
Which water system serves you?
Enter a ZIP code. We will name the utility that supplies it and its public water system identifier, so you can look up that system's own annual report. No contact details needed for this part.
Phoenix-metro ZIP codes are covered here. Five digits will do it.
A licensed technician tests at your own tap and tells you which findings actually apply to your house — including when the answer is none of them. Coverage is confirmed per service area rather than promised as blanket availability.
Where Peoria water comes from
A West Valley portfolio: CAP first, SRP second, wells third. This is the part a national filtration site cannot tell you.
Colorado River via CAP — about 57%
The 2024 Peoria portfolio lists about 57 percent Colorado River water delivered by the Central Arizona Project. Long open-canal transit in a hot climate is why disinfection byproducts show up in West Valley reports.
Salt and Verde Rivers via SRP — about 35%
About 35 percent of the 2024 mix. Salt River Project surface water from the Salt and Verde watersheds. The blend with CAP is why a Peoria neighbour and a Phoenix neighbour are not on the same water.
Well water — about 8%
About eight percent groundwater. ADEQ source-water assessment language in the CCR notes that wells can carry a high-risk designation for adjacent land use — which is a source-protection fact, not a tap reading. Wells are also why arsenic shows up in the regulated table.
What is in the system, and what the 2024 report actually says
Federal Maximum Contaminant Levels are fixed. The ranges next to them are from the City of Peoria 2024 Consumer Confidence Report for PWS ID AZ0407096 — system-level figures, not a reading at your tap. A later CCR supersedes them.
Arsenic
Naturally occurring in West Valley groundwater. The federal MCL is 10 ppb. Peoria's 2024 report lists a range of not-detected to 5.8 µg/L with a reported average of 5.8 µg/L — below the MCL, and not zero. Reverse osmosis addresses dissolved arsenic; a carbon pitcher does not.
Total trihalomethanes (TTHM)
A disinfection byproduct. The federal MCL is 80 ppb as a running annual average. The 2024 report lists an average of 51.7 µg/L and a sample range of 32.2 to 83.6 µg/L. Compliance is judged on the running annual average, not on a single high sample. Activated carbon addresses TTHM; a softener does not.
Haloacetic acids (HAA5)
The other regulated chlorine-byproduct family. The federal MCL is 60 ppb. The 2024 report lists an average of 12.6 µg/L and a sample range of 6.6 to 17 µg/L. Activated carbon is the matching treatment.
Chromium (total)
The 2024 report lists total chromium as not-detected to 28 µg/L with an average of 11 µg/L against a federal MCL of 100 ppb. Hexavalent chromium has no separate federal MCL. Reverse osmosis is the residential option for dissolved chromium.
Nitrate
The 2024 report lists nitrate as 0.4 to 6.6 mg/L with an average of 2.3 mg/L against a federal MCL of 10 mg/L. Elevated nitrate is a short-term concern for infants; the CCR itself carries that health note. Point-of-use reverse osmosis is the usual residential answer when a tap test confirms it.
What we are not putting on this page
A hardness number we could not extract from the published tables, and a reading for your address. System averages cannot account for your service line, your fixtures, or a softener already installed.
Where these figures come from
Every concentration on this page is taken from the utility's own 2024 Consumer Confidence Report and every legal limit is the EPA Maximum Contaminant Level. Independent compilations exist; they are not the source used here.
- City of Peoria Water Quality Reports — Consumer Confidence Reports for PWS ID AZ0407096. Arsenic, TTHM, HAA5, chromium, nitrate and the 57 / 35 / 8 percent source mix are taken from the 2024 report.
- EPA National Primary Drinking Water Regulations — federal MCLs, including arsenic 10 ppb, TTHM 80 ppb, HAA5 60 ppb, total chromium 100 ppb and nitrate 10 mg/L.
- EPA SDWIS Federal Reports — search public water system identifier AZ0407096.
Matching treatment to the finding
Filtration is not one product. Each of these addresses a different problem, and none of them addresses all of them.
Reverse osmosis, at the tap
The residential option for dissolved inorganics — arsenic, chromium and nitrate among them. Under-sink for drinking and cooking.
Activated carbon
Targets chlorine byproducts and the taste that comes with them. It does not remove arsenic and it does not soften water.
Ion-exchange softener
When scale is the complaint, softening is a plumbing decision confirmed by a hardness test at your tap — not by a number we invent for this page.
Sometimes nothing
If a test comes back unremarkable, that is the finding. A free test that always ends in a recommendation is not a test.
How the free test works
A licensed technician tests at your kitchen tap, walks the plumbing, and tells you which of the problems above applies to your house and which does not. There is no charge and no obligation.
Seamless Home is the licensed contractor of record on the work that follows. Installation is performed by vetted installing partners engaged as our subcontractors, and the workmanship obligation stays with us. Coverage is confirmed per service area rather than promised as blanket availability.
If softening is part of the answer, see where a water softener is allowed to discharge.
Peoria water, answered plainly
Is Peoria tap water safe to drink?+
Peoria water is treated to federal standards by the City of Peoria, public water system identifier AZ0407096, and the utility publishes compliance in its annual Consumer Confidence Report. A system can be fully compliant and still contain compounds a household would rather filter.
Why is the West Valley different from Mesa or Tempe?+
Because Peoria's 2024 mix was about 57 percent CAP Colorado River water, 35 percent SRP Salt and Verde, and 8 percent wells — a CAP-heavier portfolio than Tempe's SRP-first year. Different blend, different byproduct and arsenic profile. A valley-wide average is not a Peoria reading.
Do I need a whole-house system or a filter at the sink?+
They solve different problems. Point-of-use reverse osmosis handles what you drink and cook with. A softener handles what your plumbing and water heater experience when hardness is confirmed at the tap. Sequence matters.
Does a pitcher filter fix Peoria water?+
A carbon pitcher improves taste and reduces chlorine byproducts. It will not meaningfully reduce arsenic or nitrate, and it does nothing for hardness.
How do I find the measured numbers for my system?+
The City of Peoria Water Quality Reports (Consumer Confidence Reports) are published by Water Services. EPA SDWIS carries the compliance record under public water system identifier AZ0407096. Those are system-level figures.
What does water treatment cost in Peoria?+
It depends on which equipment your results justify. We do not publish a figure for your house on a web page. The test is free and the conversation that follows is based on what the test found.
Who does the installation, and who is responsible afterwards?+
Seamless Home is the licensed contractor of record. Installation is performed by vetted installing partners engaged as our subcontractors, and the workmanship obligation stays with us. Coverage is confirmed per service area rather than promised as blanket availability.
Related resources
Home water purification and treatment
The national service page: what each treatment stage removes, and why a test comes first.
Learn more →Phoenix water quality
The Phoenix CCR page: same metro corridor, different utility and PWS ID.
Learn more →Tempe water quality
SRP-first East Valley contrast to Peoria's CAP-heavier West Valley mix.
Learn more →HVAC in Phoenix, AZ
The heat-side of the Valley: cooling-dominated design in IECC zone 2B.
Learn more →All homeowner services
Water treatment, battery backup, HVAC and solar under one licensed contractor of record.
Learn more →Get a free test at your tap
A licensed technician tests at your kitchen tap and tells you which of the problems above applies to your house — and which does not. No charge, no obligation, and coverage confirmed at your address first.
Get a free test