Water Around

PUBLIC WATER SYSTEM

Tucson Water

Water testing, compliance records and water sources for this system. Check your utility bill to confirm your provider.

AZ0410112Open in the atlas →

Public drinking-water record

Drinking-water testing

Tucson Water · AZ0410112. These are public water-system records, not a test of the tap water at your home.

PFAS testing

1 PFAS sample results had reported detections. Most recent PFAS sample shown here: .

PFOA

Not detected above reporting limit

Sample date
Reporting limit
0.004 µg/L
Sample ID
380-181157-1

PFOS

Not detected above reporting limit

Sample date
Reporting limit
0.004 µg/L
Sample ID
380-181157-1

PFBA

0.0081 µg/L

Sample date
Reporting limit
0.005 µg/L
Sample ID
380-112365-1

Selected latest compound samples from the published federal system record. Multiple sample points may share a date. A detection does not establish a violation. A non-detection does not mean PFAS-free. PFOA and PFOS limits and regulatory context are separate from these historical samples.

Lead and copper

Lead: 0.000649 mg/L, period ending 2023-12-31. These are system 90th-percentile results, not individual household concentrations.

EPA UCMR5 source and sampling program · EPA ECHO compliance and lead/copper records

Measurement coverage

No measurements available here

We do not have measurements to show for Tucson Water in this section. Explore the connections below for related waters and water providers.

No measurement history available here

We do not have historical measurements to show for Tucson Water. This does not mean it is unmonitored or that its water is safe or unsafe. You can still explore the information and source links on this page.

We do not have the full history of federal test results for this system yet.

Any available samples are shown above. Missing history does not tell us whether the water meets drinking-water standards.

Water sources

Where the water comes from

Tucson Water receives water from Tucson-area aquifers and Central Arizona Project, according to the source records.

The links show sources and suppliers, not the amount being delivered today. Select one for its source record.

Sources traced upstreamSource coverage does not measure water quality or reliability.

Your water system

Sources and conveyance

Further upstream

Sources and relationships as a list

Documented current sources or suppliers for Tucson Water include Tucson-area aquifers and Central Arizona Project. A relationship does not by itself establish the current delivered amount.

  1. Tucson Water uses groundwater from Tucson-area aquifers. Current. The relationship is documented; a current delivered amount is not available.
  2. Tucson Water supplied by Central Arizona Project. Current. The relationship is documented; a current delivered amount is not available.
  3. Central Arizona Project imports from Colorado River. Current. The relationship is documented; a current delivered amount is not available.
Water source types explained

Surface waterWater drawn from rivers, lakes, or reservoirs.

GroundwaterWater pumped from aquifers—bodies of rock or sediment that store and transmit groundwater, not underground lakes.

Wholesale waterA regional supplier can supply your local provider without serving your household directly.

Imported waterYour drinking-water source basin can differ from the watershed where you live.

Connected water system

Tucson-area aquifers · Detail page unavailable
Central Arizona Project · Detail page unavailable