TUCSON, AZ · Pima County
MT LEMMON DWID Water System
Consumer Confidence Report status
MT LEMMON DWID 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 MT LEMMON DWID.
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)
- AZ0410140
- System type
- Community Water System
- Population served
- 290
- Service connections
- 344
- Ownership
- privately owned
- Water source
- groundwater (wells)
MT LEMMON DWID is one of 1,189 community water systems in Arizona in the 500 or fewer people size category, serving 290 people from groundwater.
As of August 1, 2026, its federal record holds 4 entries between 2007 and 2011, all of which EPA lists as closed. Nothing has been added since 2011.
All 4 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 and the Stage 1 Disinfectants and Disinfection Byproducts Rule.
Violation history
Monitoring and Reporting (DBP)
—Chlorine
January 1, 2011 – March 31, 2011
ResolvedMonitoring, Regular
—DICHLOROMETHANE
January 1, 2007 – December 31, 2009
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2007 – December 31, 2009
ResolvedMonitoring, Regular
—Styrene
January 1, 2007 – December 31, 2009
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2011 – March 31, 2011 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| January 1, 2007 – December 31, 2009 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| January 1, 2007 – December 31, 2009 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| January 1, 2007 – December 31, 2009 | Monitoring, Regular | Styrene | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- November 6, 2012State Violation/Reminder Notice109 linked violations
- September 24, 1980State Othergeneral compliance action — not tied to a specific violation on record
Common questions
Is MT LEMMON DWID required to publish a Consumer Confidence Report?
- Yes. MT LEMMON DWID 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 MT LEMMON DWID’s next Consumer Confidence Report due?
- MT LEMMON DWID’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does MT LEMMON DWID have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for MT LEMMON DWID.
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
DAVIS, NATHAN L
520-576-1538
TUCSON, AZ 85730