Public water system record
GW Santa Cruz Water Co
Serves Maricopa, Pinal County, AZ · 84,000 people served
Federal records show 1 health-based violation and 75 monitoring/reporting issues for GW Santa Cruz Water Co in the last ten years. The most serious issue in this window was a resolved Revised Total Coliform Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 75
Key facts
- GW Santa Cruz Water Co draws water from 9 wells.
- Most recent enforcement action: boil water order by Arizona, August 2025.
- Record on file since 2002, with 5 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 27,134 service lines.
Check whether GW Santa Cruz Water Co 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Aug 1, 2025 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Chlorine
Monitoring and reporting
|
Nov 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Public Notice
OTHER
|
Jul 19, 2025 | Resolved |
|
Public Notice
OTHER
|
Jul 19, 2025 | Resolved |
|
Public Notice
OTHER
|
Jul 19, 2025 | Resolved |
|
Public Notice
OTHER
|
Jul 19, 2025 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Radium-228
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Radium-226
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2023 | Resolved |
|
Radium-226
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Radium-228
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Mar 1, 2021 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Mar 1, 2021 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Nickel
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
CYANIDE
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Endothall
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Diquat
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Selenium
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Thallium, Total
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Beryllium, Total
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Antimony, Total
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Nickel
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Mercury
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Fluoride
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
CYANIDE
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Chromium (total)
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Cadmium
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Barium
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Arsenic
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
Full record since 2002
EPA's records for GW Santa Cruz Water Co go back to 2002. Before October 19, 2016 they list 5 health-based violations (5 resolved) and 20 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 1 | 14 |
| 2010 to October 18, 2016 | 4 | 6 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 1 | 74 |
Most recent health-based violation before October 19, 2016: Total Coliform, began June 2015, Resolved.
Show all 5 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2014 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 32 µg/L, federal limit 30 µg/L (1.1 times the limit)
|
Jul 1, 2011 | Resolved |
|
Combined Uranium
Contaminant limit exceeded
Measured 31 µg/L, federal limit 30 µg/L (at or just above the limit)
|
Apr 1, 2011 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2005 | Resolved |
Enforcement actions
Arizona regulators issued 1 boil water order to GW Santa Cruz Water Co in 2025. The most recent was a boil water order in August 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Aug 28, 2025 | Arizona | Boil water order | 1 violation |
What the violations mean
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
GW Santa Cruz Water Co draws water from 9 wells.
Annual water quality report
GW Santa Cruz Water Co 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