Water Around

Arizona

Water in Tucson, AZ

Pima County, Arizona · City overview · Page updated 2026-10-20

PFAS testing · samples through 2025-11-04

Limited coverage

Water summary

Where Tucson gets its water

Tucson Water is the likely provider for the mapped location in Tucson. Check your utility bill to confirm service at your address. Check your utility bill to confirm who supplies your home.

Likely water system
Tucson Water →
Water sources
Water sources not yet identified
Watershed
Upper Santa Cruz

Public drinking-water record

Drinking water in Tucson

Tucson Water is listed for this area. Check your utility bill to confirm who supplies your home. These are public water-system records, not a test of the tap water at your home.

PFAS testing in Tucson’s drinking water

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 · Testing and source records for Tucson Water

U.S. Drought Monitor ·

Drought around this place

This is the latest drought map in this publication, effective 2026-10-13; it is not a live report.

Pima County, Arizona: 41.54% of county area in D1 or worse; 63.41% in D0 or worse. D0 means abnormally dry. On 2026-10-06, D1 or worse covered 43.26%.

County area shares at or above each severity: D2 23.41% · D3 0% · D4 0%. These cumulative percentages overlap and must not be added. County conditions do not describe every point in a city or a drinking-water restriction.

Arizona drought and water context

Open the drought map and historical playback · U.S. Drought Monitor source

Loading the local water map…

Drought, streams, rainfall & wells

Latest water conditions

Read each measure with its date. Rainfall, streams and groundwater can change at different rates.

Drought

Severe drought

Severe drought

Severe drought affects part of the county; this is county context, not an exact city boundary.

Older report · 2026-10-13U.S. Drought Monitor

Published or effective 2026-10-13. Water Around last checked 2026-10-20T12:00:15.835637+00:00. This report may not describe conditions today.

Map effective 2026-10-13

Streamflow

Below seasonal range

Below seasonal range

Flow at this gauge was lower than usual for the season.

Older report · 2026-10-19USGS daily mean discharge

Published or effective 2026-10-19. Water Around last checked 2026-10-20T11:59:36.282Z. This report may not describe conditions today.

Higher than 17.2% of historical daily flows for this season

Recent rainfall

0.665 inches in 30 days

0.665 inches in 30 days

17% below the 1991–2020 station normal for this period.

Older report · 2026-10-17NOAA station observations

Published or effective 2026-10-17. Water Around last checked 2026-10-20T11:59:40.024Z. This report may not describe conditions today.

Through 2026-10-17

Groundwater

Method developing

Monitoring is available

Measurements are available at nearby wells. An overall groundwater condition is not calculated from them.

5 nearby monitoring wells

Your public water system

Tucson Water

The mapped location falls within this system’s EPA service area. Confirm service to your home with the utility.

Tucson Water →AZ0410112 · community

Local compliance cacheA reporting-period record is available for this system. When federal records are available, you can read them in the drinking-water section above. Neither source is a live test of water at your tap.

Your watershed

Arroyo Chico-Santa Cruz River

A watershed is the land area where rain and streams drain toward a shared outlet. It helps explain natural water conditions, but it may not match the area supplying your tap.

Local watershed
Arroyo Chico-Santa Cruz River
Broader basin
Upper Santa Cruz

Below ground

Groundwater near Tucson

Aquifers can supply water; monitoring wells measure water levels at individual sites. One well does not describe an entire aquifer or your household well.

Groundwater sources

No aquifer source identified

The supply records do not name an aquifer. Groundwater may still be present.

Reading well data

What well measurements can tell you

A well’s water level does not tell us how much water an aquifer holds. Pumping totals alone do not show depletion, and a surface map does not show the aquifer’s full underground extent. To understand water quality in a private well, use tests from that well and local guidance.

Arizona water planning

Water planning in Tucson

Explore groundwater planning in the Tucson Active Management Area and water brought in by the Central Arizona Project. Imported water is separate from local streamflow.

Partial records

Supply

About these records

These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.

Measure
Assured supply
Reporting period
Plan cycle
Partial records

Demand

About these records

These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.

Measure
Reported use
Reporting period
Plan cycle
State records

Groundwater

About these records

These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.

Measure
Groundwater
Reporting period
Plan cycle
State records

Water planning

About these records

These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.

Measure
Assured supply
Reporting period
Plan cycle
Partial records

Water rights

About these records

These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.

Measure
Water rights
Reporting period
Plan cycle
Partial records

Imported water

About these records

These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.

Measure
Imported water
Reporting period
Plan cycle

Water planning regions

Tucson Active Management AreaActive management area
Sources and limitations

These pages show Central Arizona Project supply connections, not live delivery amounts. A 100-year assured-supply finding is not a guarantee of uninterrupted supply.

Detailed testing and assessment records are not available here yet.We do not have enough information to show here yet. That does not tell us whether the water is in good or poor condition.

Waters around you

Rivers and lakes near Tucson

Nearby rivers and lakes from USGS maps. Proximity does not establish a drinking-water source, public access or shared water conditions.

We have no named river or lake to show in this area yet.

Smaller streams may still be present. This catalog does not include every waterbody.

Where your water comes from

Water sources not yet identified

We identified no authoritative named-source network for this system in the current bounded publication.

Water AroundExplore your local water, with sources you can check.