Water Health Check Report
Scottsdale, AZ
City Of Scottsdale Water · Blended supply source · Central Arizona Project (Colorado River, ~60%), Salt River Project surface water (~25%), and local groundwater (~15%). CAP water travels 336 miles from Lake Havasu and carries elevated mineral content and trace PFAS from upstream sources. Blended and treated at Scottsdale Water Campus and regional plants.
Fair — with 5 concerns
City Of Scottsdale Water meets all federal legal limits but 5 contaminants exceed EWG health guidelines. Lead levels within limits at treatment plant
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Lead—source matters
Lead in tap water comes from household plumbing, not the source water or treatment plant. Scottsdale water leaves the treatment plant lead-free. Risk depends on your building's internal plumbing—highest in homes built before 1986, when lead solder was common. A NSF/ANSI 53 certified pitcher or under-sink filter removes lead at point of use.
Source water—blended supply
City Of Scottsdale Water blends surface water and local groundwater. The figures above reflect utility-wide averages across all distribution zones. Water chemistry—particularly hardness, nitrates, and naturally occurring minerals—can vary meaningfully by district and season depending on the blend ratio. If your neighbourhood draws primarily from the groundwater portion, contaminant levels for minerals and agricultural compounds may differ from the utility average shown here.
Source: Central Arizona Project (Colorado River, ~60%), Salt River Project surface water (~25%), and local groundwater (~15%). CAP water travels 336 miles from Lake Havasu and carries elevated mineral content and trace PFAS from upstream sources. Blended and treated at Scottsdale Water Campus and regional plants.
Contaminants tested
11 total · 5 above EWG guideline| Contaminant | Level | Status |
|---|---|---|
PFOA (perfluorooctanoic acid) CAS 335-67-1 | 3.1 ppt | Above guideline |
PFOS (perfluorooctane sulfonate) CAS 1763-23-1 | 2.2 ppt | Above guideline |
Haloacetic acids (HAA5) CAS Various | 32.1 ppb | Above guideline |
Arsenic CAS 7440-38-2 | 1.1 ppb | Above guideline |
Nitrate CAS 14797-55-8 | 1.4 ppm | Above guideline |
Copper CAS 7440-50-8 | 0.22 ppm | Within limits |
Fluoride CAS 16984-48-8 | 0.70 ppm | Within limits |
Barium CAS 7440-39-3 | 0.14 ppm | Within limits |
Lead CAS 7439-92-1 | 1.6 ppb | Within limits |
Chlorine (residual) CAS 7782-50-5 | 1.1 ppm | Within limits |
Total trihalomethanes (TTHMs) CAS Various | ND ppb | Within limits |
Filter recommendation
5 contaminants above guidelines. Here's what removes them.
A guided 4-question flow matches you to the right filter for your setup, budget, and household.
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Data sources
Status flags compare detected levels against both EPA legal limits and EWG health-based guidelines—which are stricter and science-derived, independent of political feasibility.