DES PERES, AZ · Yuma County
CS TIERRA MESA ESTATES WATER COMPANY Water System
Consumer Confidence Report status
CS TIERRA MESA ESTATES WATER COMPANY must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for CS TIERRA MESA ESTATES WATER COMPANY.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Arizona’s official records. Always confirm current status with Arizona before making decisions based on this information.
System facts
- System ID (PWSID)
- AZ0414080
- System type
- Community Water System
- Population served
- 632
- Service connections
- 247
- Ownership
- privately owned
- Water source
- groundwater (wells)
CS TIERRA MESA ESTATES WATER COMPANY is one of 272 community water systems in Arizona in the 501 to 3,300 people size category, serving 632 people from groundwater.
As of August 1, 2026, its federal record holds 13 entries between 1989 and 2022, all of which EPA lists as closed. Nothing has been added since 2022.
Of the 13, 7 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Lead and Copper Rule, the Radionuclides and Revised Rad Rule, and the Public Notice Rule and Revised PN Rule.
Violation history
Maximum Contaminant Level Violation, Average
Health-basedCombined Uranium
April 1, 2022 – June 30, 2022
ArchivedPublic Notification Violation for NPDWR Violation
—Public Notice
August 23, 2020 – September 17, 2020
ResolvedPublic Notification Violation for NPDWR Violation
—Public Notice
August 5, 2020 – August 1, 2021
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
July 1, 2019 – August 6, 2020
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
January 1, 2019 – August 6, 2020
ResolvedLead Consumer Notice
—Lead and Copper Rule
October 1, 2018 – December 1, 2021
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
July 1, 2018 – August 6, 2020
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
January 1, 2018 – August 6, 2020
ResolvedConsumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
October 1, 2013 – April 2, 2014
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
August 1, 2012 – August 31, 2012
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2006 – April 26, 2007
ResolvedMonitoring, Check/Repeat/Confirmation
—Endrin
March 8, 2001 – March 22, 2001
ArchivedMaximum Contaminant Level Violation, Single Sample
Health-basedGross Alpha, Excl. Radon and U
April 1, 1989 – June 30, 1989
Resolved
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| April 1, 2022 – June 30, 2022 | Maximum Contaminant Level Violation, Average | Combined Uranium | Health-based | Archived |
| August 23, 2020 – September 17, 2020 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| August 5, 2020 – August 1, 2021 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| July 1, 2019 – August 6, 2020 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| January 1, 2019 – August 6, 2020 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| October 1, 2018 – December 1, 2021 | Lead Consumer Notice | Lead and Copper Rule | — | Resolved |
| July 1, 2018 – August 6, 2020 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| January 1, 2018 – August 6, 2020 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| October 1, 2013 – April 2, 2014 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Resolved |
| August 1, 2012 – August 31, 2012 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| July 1, 2006 – April 26, 2007 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| March 8, 2001 – March 22, 2001 | Monitoring, Check/Repeat/Confirmation | Endrin | — | Archived |
| April 1, 1989 – June 30, 1989 | Maximum Contaminant Level Violation, Single Sample | Gross Alpha, Excl. Radon and U | Health-based | Resolved |
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
Enforcement actions
- February 25, 2026State Public Notification received100 linked violations
- August 5, 2022State Compliance achieved44 linked violations
- August 1, 2021State Compliance achieved28 linked violations
- November 27, 2001State Compliance achieved516 linked violations
Common questions
Is CS TIERRA MESA ESTATES WATER COMPANY required to publish a Consumer Confidence Report?
- Yes. CS TIERRA MESA ESTATES WATER COMPANY is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is CS TIERRA MESA ESTATES WATER COMPANY’s next Consumer Confidence Report due?
- CS TIERRA MESA ESTATES WATER COMPANY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CS TIERRA MESA ESTATES WATER COMPANY have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CS TIERRA MESA ESTATES WATER COMPANY.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
KRIESS, FRED
602-698-9786
DES PERES, MO 63131