Public water system record
City of Tucson
Serves Tucson, Catalina Foothills, Tanque Verde and 9 more places, Pima County, AZ · 732,906 people served
Federal records show no health-based violations and 111 monitoring/reporting issues for City of Tucson in the last ten years.
System profile
Source water
Groundwater
ZIP
85726
EPA system ID
AZ0410112
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 111
Key facts
- City of Tucson draws water from 155 wells (17 of them for emergency, seasonal or other part-time use).
- Record on file since 1980, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 140,797 unknown out of 267,346 service lines.
Check whether City of Tucson serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
LASSO
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
May 1, 2019 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
May 1, 2019 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Endothall
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Diquat
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Endothall
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Diquat
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Nickel
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
CYANIDE
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Radium-228
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Radium-226
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2013 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2013 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2013 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2013 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2013 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2013 | Resolved |
Full record since 1980
EPA's records for City of Tucson go back to 1980. Before October 19, 2016 they list 1 health-based violation (1 archived by EPA without a recorded fix) and 1,943 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 1 | 2 |
| 1990s | 0 | 1347 |
| 2000s | 0 | 574 |
| 2010 to October 18, 2016 | 0 | 20 |
| October 19, 2016 to 2019 | 0 | 98 |
| 2020s | 0 | 7 |
Most recent health-based violation before October 19, 2016: Nitrate (acute), began November 1980, Archived.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Nitrate (acute)
Contaminant limit exceeded
|
Nov 19, 1980 | Archived |
Where the water comes from
City of Tucson draws water from 155 wells (17 of them for emergency, seasonal or other part-time use). It also has an emergency connection to Marana Municipal - Picture Rocks. 9 other community water systems and 1 smaller public system such as schools, businesses or campgrounds buy water from City of Tucson. 35 other public water systems have emergency connections to City of Tucson.
Emergency or part-time connections to
- Marana Municipal - Picture Rocks Tucson, AZ
Community systems that buy water from it
- Lazy C Water Service Tucson, AZ
- Marana Municipal - Silverbell Gateway Marana, AZ
- Marana Municipal - Tortolita Mountain Marana, AZ
- Metropolitan DWID - Lazy B Tucson, AZ
- Mission View Mobile Home Park (Tucson Water Consec Sells, AZ
- Oro Valley Water Countryside Oro Valley, AZ
- Oro Valley Water Utility Oro Valley, AZ
- Rio Mercado Water Tucson, AZ
- Vail Water Company Vail, AZ
Annual water quality report
City of Tucson must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Arizona.
Certified drinking water labs by state EPA guidance for private wells