Public water system record
La Costa Water Users Assoc
Serves an area of Cochise County, AZ that includes Douglas · 30 people served
Federal records show 2 health-based violations and 13 monitoring/reporting issues for La Costa Water Users Assoc in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 13
Key facts
- La Costa Water Users Assoc draws water from 1 well.
- Record on file since 1988, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 15 unknown out of 16 service lines.
Check whether La Costa Water Users 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 |
|---|---|---|---|---|
|
Groundwater Rule
Treatment technique failure
|
140 | Oct 14, 2023 | Resolved | No |
|
Revised Total Coliform Rule
Treatment technique failure
|
110 | Nov 8, 2022 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2025 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Active |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
E. coli
Monitoring and reporting
|
Oct 21, 2022 | Active |
|
Consumer Confidence Rule
OTHER
|
Oct 2, 2022 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2022 | Resolved |
|
E. coli
Monitoring and reporting
|
Jun 3, 2021 | Resolved |
|
Public Notice
OTHER
|
Feb 26, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Nov 1, 2020 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2020 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Oct 1, 2018 | Resolved |
Full record since 1988
EPA's records for La Costa Water Users Assoc go back to 1988. Before October 19, 2016 they list no health-based violations and 66 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 1 |
| 1990s | 0 | 33 |
| 2000s | 0 | 22 |
| 2010 to October 18, 2016 | 0 | 10 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 2 | 12 |
What the violations mean
Groundwater Rule
1 incidentThe system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
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
La Costa Water Users Assoc draws water from 1 well.
Annual water quality report
La Costa Water Users 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 La Costa Water Users 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