DES PERES, AZ · Pima County
CS LOS CERROS WATER COMPANY INC Water System
Consumer Confidence Report status
CS LOS CERROS WATER COMPANY INC 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 LOS CERROS WATER COMPANY INC.
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)
- AZ0410128
- System type
- Community Water System
- Population served
- 2,613
- Service connections
- 902
- Ownership
- privately owned
- Water source
- groundwater (wells)
CS LOS CERROS WATER COMPANY INC is one of 272 community water systems in Arizona in the 501 to 3,300 people size category, serving 2,613 people from groundwater.
As of August 1, 2026, its federal record holds 28 entries between 1980 and 2007, all of which EPA lists as closed. Nothing has been added since 2007.
Of the 28, 27 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 volatile organic chemicals, inorganic chemicals, and the Consumer Confidence Rule.
Violation history
Consumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2007 – July 20, 2007
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
November 1, 1991 – November 30, 1991
ArchivedMonitoring, Regular
—Chromium
May 31, 1988 – May 30, 1991
ArchivedMonitoring, Regular
—Selenium
May 31, 1988 – May 30, 1991
ArchivedMonitoring, Regular
—Cadmium
May 31, 1988 – May 30, 1991
ArchivedMonitoring, Regular
—Mercury
May 31, 1988 – May 30, 1991
ArchivedMonitoring, Regular
—Fluoride
May 31, 1988 – May 30, 1991
ArchivedMonitoring, Regular
—Arsenic
May 31, 1988 – May 30, 1991
ArchivedMonitoring, Regular
—Nitrate
May 31, 1988 – May 30, 1991
ArchivedMonitoring, Regular
—Barium
May 31, 1988 – May 30, 1991
ArchivedMonitoring, Regular
—Trichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Tetrachloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—CHLOROBENZENE
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—cis-1,2-Dichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Toluene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Ethylbenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Benzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—DICHLOROMETHANE
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—o-Dichlorobenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—p-Dichlorobenzene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,2-Dichloroethane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Carbon tetrachloride
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—1,2-Dichloropropane
January 1, 1987 – January 1, 1992
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
July 1, 1980 – June 30, 1984
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| July 1, 2007 – July 20, 2007 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| November 1, 1991 – November 30, 1991 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Archived |
| May 31, 1988 – May 30, 1991 | Monitoring, Regular | Chromium | — | Archived |
| May 31, 1988 – May 30, 1991 | Monitoring, Regular | Selenium | — | Archived |
| May 31, 1988 – May 30, 1991 | Monitoring, Regular | Cadmium | — | Archived |
| May 31, 1988 – May 30, 1991 | Monitoring, Regular | Mercury | — | Archived |
| May 31, 1988 – May 30, 1991 | Monitoring, Regular | Fluoride | — | Archived |
| May 31, 1988 – May 30, 1991 | Monitoring, Regular | Arsenic | — | Archived |
| May 31, 1988 – May 30, 1991 | Monitoring, Regular | Nitrate | — | Archived |
| May 31, 1988 – May 30, 1991 | Monitoring, Regular | Barium | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Trichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Tetrachloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | CHLOROBENZENE | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Toluene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Ethylbenzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Benzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | DICHLOROMETHANE | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | o-Dichlorobenzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | p-Dichlorobenzene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,1-Dichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,2-Dichloroethane | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | Carbon tetrachloride | — | Archived |
| January 1, 1987 – January 1, 1992 | Monitoring, Regular | 1,2-Dichloropropane | — | Archived |
| July 1, 1980 – June 30, 1984 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- December 4, 2007State Compliance achieved82 linked violations
- July 22, 2005State Compliance achieved85 linked violations
Common questions
Is CS LOS CERROS WATER COMPANY INC required to publish a Consumer Confidence Report?
- Yes. CS LOS CERROS WATER COMPANY INC 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 LOS CERROS WATER COMPANY INC’s next Consumer Confidence Report due?
- CS LOS CERROS WATER COMPANY INC’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does CS LOS CERROS WATER COMPANY INC have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for CS LOS CERROS WATER COMPANY INC.
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