Public water system record
Rancho Sierrita Well Assoc
Serves Tucson and Three Points, Pima County, AZ · 55 people served
Federal records show 1 health-based violation and 11 monitoring/reporting issues for Rancho Sierrita Well Assoc 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
- 11
Key facts
- Rancho Sierrita Well Assoc draws water from 1 well.
- Most recent enforcement action: boil water order by Arizona, September 2017.
- Record on file since 1998, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 36 service lines.
Check whether Rancho Sierrita Well Assoc 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 | Sep 1, 2017 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2025 | Active |
|
Revised Total Coliform Rule
RPT
|
Mar 1, 2024 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Jan 1, 2024 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Aug 1, 2019 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Jul 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2018 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Nov 1, 2017 | Resolved |
|
E. coli
Monitoring and reporting
|
Jun 21, 2017 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Jun 5, 2017 | Resolved |
Full record since 1998
EPA's records for Rancho Sierrita Well Assoc go back to 1998. Before October 19, 2016 they list no health-based violations and 40 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 13 |
| 2000s | 0 | 19 |
| 2010 to October 18, 2016 | 0 | 8 |
| October 19, 2016 to 2019 | 1 | 6 |
| 2020s | 0 | 5 |
Enforcement actions
Arizona regulators issued 1 boil water order to Rancho Sierrita Well Assoc in 2017. The most recent was a boil water order in September 2017.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Sep 7, 2017 | Arizona | Boil water order | 1 violation (1 health-based): Revised Total Coliform Rule |
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
Rancho Sierrita Well Assoc draws water from 1 well.
Annual water quality report
Rancho Sierrita Well Assoc 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Rancho Sierrita Well Assoc for a copy.
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