Public water system record
Metropolitan DWID
Serves Tucson, Casas Adobes and Oro Valley, Pima County, AZ · 45,570 people served
Federal records show no health-based violations and 77 monitoring/reporting issues for Metropolitan DWID in the last ten years. At least one of these issues remains unresolved.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 77
Key facts
- Metropolitan DWID draws water from 23 wells.
- Record on file since 1980, with 8 health-based violations before October 19, 2016.
Check whether Metropolitan DWID 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 |
|---|---|---|
|
Styrene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Toluene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Benzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Styrene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Toluene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Benzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Styrene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Toluene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Benzene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Jul 1, 2023 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2019 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Nov 1, 2018 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
|
Chlorine
Monitoring and reporting
|
Oct 1, 2016 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2012 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2012 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2012 | Resolved |
|
Asbestos
Monitoring and reporting
|
Jan 1, 2012 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2002 | Active |
Full record since 1980
EPA's records for Metropolitan DWID go back to 1980. Before October 19, 2016 they list 8 health-based violations (7 resolved, 1 archived by EPA without a recorded fix) and 713 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 1 |
| 1990s | 2 | 455 |
| 2000s | 6 | 241 |
| 2010 to October 18, 2016 | 0 | 16 |
| October 19, 2016 to 2019 | 0 | 4 |
| 2020s | 0 | 67 |
Most recent health-based violation before October 19, 2016: Trichloroethylene, began April 2004, Resolved.
Show all 8 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Trichloroethylene
Contaminant limit exceeded
Measured 0.0052 mg/L, federal limit 0.005 mg/L (at or just above the limit)
|
Apr 1, 2004 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 2004 | Resolved |
|
CYANIDE
Contaminant limit exceeded
Measured 0.22 mg/L, federal limit 0.2 mg/L (1.1 times the limit)
|
Jan 1, 2003 | Resolved |
|
Tetrachloroethylene
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.005 mg/L (2.2 times the limit)
|
Jan 1, 2003 | Resolved |
|
Tetrachloroethylene
Contaminant limit exceeded
Measured 0.009 mg/L, federal limit 0.005 mg/L (1.8 times the limit)
|
Oct 1, 2000 | Resolved |
|
Combined Radium (-226 and -228)
Contaminant limit exceeded
Measured 7.8 pCi/L, federal limit 5 pCi/L (1.6 times the limit)
|
Jul 11, 2000 | Resolved |
|
Tetrachloroethylene
Contaminant limit exceeded
Measured 0.0068 mg/L, federal limit 0.005 mg/L (1.4 times the limit)
|
Oct 1, 1999 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 1991 | Archived |
Where the water comes from
Metropolitan DWID draws water from 23 wells. It also has an emergency connection to City of Tucson. 2 other public water systems have emergency connections to Metropolitan DWID.
Emergency or part-time connections to
- City of Tucson Tucson, AZ
Annual water quality report
Metropolitan DWID 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