Tortilla Flat Resort
Transient non-community system in Tortilla Flat, Maricopa County, Arizona, serving 30 people from ground water. 3 rules violated in the past three years. Privately owned.
Quarterly compliance history
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
2026
Rules violated in the past three years
Jul to Sep 2023 to Jul to Sep 2026
Revised Total Coliform Rule
Monitoring ViolationReporting Violation
16 violations, Mar 2023 to May 2026
Revised Total Coliform Rule
Monitoring ViolationReporting Violation16 violations, Mar 2023 to May 2026
Monitoring Violation: 9 violations, Sep 2023 to May 2026. The system did not complete required monitoring. This does not show that a contaminant was found.
Reporting Violation: 7 violations, Mar 2023 to Dec 2024. The system did not report required information on time.
What the rule requires: The 2013 RTCR (effective 2016) replaced the original TCR. It triggers automatic E. coli testing whenever total coliform is found. A single E. coli-positive sample is an acute MCL violation. It also requires systems exceeding 5% total coliform-positive samples to conduct a formal assessment and correct any deficiencies, helping prevent contamination before it escalates.
About this rule
Nitrate Rule
Maximum Contaminant Level ViolationMonitoring and Reporting
Health-based
3 violations, Jan 2023 to Dec 2025 · 58 MG/L
Nitrate Rule
Maximum Contaminant Level ViolationMonitoring and Reporting Health-based3 violations, Jan 2023 to Dec 2025 · 58 MG/L
Maximum Contaminant Level Violation, health-based: 1 violation, Jan 2023 to Jan 2025. A sample exceeded the maximum contaminant level EPA allows in drinking water.
Monitoring and Reporting: 2 violations, Jan 2023 to Dec 2025. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.
Limit 10 MG/L · Jan to Dec 2023
What the rule requires: Nitrate (NO₃) is the most common chemical contaminant in US groundwater, entering from fertilizers, septic systems, and animal waste. It is odorless and tasteless — the only way to know if it's present is to test.
Health effects: Methemoglobinemia in infants under 6 months: gut bacteria convert nitrate to nitrite, which blocks oxygen transport in blood. Pregnant women should also take precautions. Chronic adult exposure at elevated levels may increase cancer risk. Limit: 10 mg/L as nitrogen (NO₃-N)
About this rule
Public Notice Rule and Revised PN Rule
Other Violation
1 violation, Feb 2021 to Mar 2025 · Public Notification Rule
Public Notice Rule and Revised PN Rule
Other Violation1 violation, Feb 2021 to Mar 2025 · Public Notification Rule
Other Violation: 1 violation, Feb 2021 to Mar 2025. A requirement other than monitoring, reporting, or a contaminant limit, such as public notice or the annual water quality report.
Contaminant on the record: Public Notification Rule.
Lead and copper at the tap
The 90th percentile of the tap samples the system collected in its latest monitoring period, against EPA's action level. Levels vary between homes.
Action level 0.015 mg/L · Jan 2014 to Dec 2016
About this data
Rules violated and the list above come from EPA's SDWIS violation records, one row per violation and contaminant, grouped by the rule each row belongs to. A violation counts when its non-compliance period ended on or after Jul 1, 2023, the start of the thirteen quarters ECHO's three-year figures cover, or is still open; it is unresolved when it was still open at EPA's data refresh on Oct 7, 2026. EPA's rule code 500, "Not Regulated", is left out, as in ECHO's counts. Each rule's violation count is EPA's, and one rule can carry several: a missed monitoring round for a group of contaminants is one violation per contaminant and period. Category names are EPA's violation categories.
ECHO's own summary count of rules violated agrees with this grouping for 98.8% of active systems nationally, and its count of rules being violated for 98.7%; where they differ, the figures here follow the rows listed.
A measured value shown with a rule is the sample result EPA recorded with that violation (SDWIS viol_measure), against the limit EPA recorded on the same row (state_mcl), both in EPA's unit as written; violations without a recorded value, such as missed monitoring, show none. Other measured contaminant levels are not part of this record; each system publishes them in its annual Consumer Confidence Report.
Lead and copper are the newest 90th-percentile results in EPA's SDWA data download (LCR_SAMPLES, codes PB90 and CU90): for each monitoring period a system reports the 90th-percentile value of its tap samples, which EPA compares with its action level of 0.015 mg/L for lead and 1.3 mg/L for copper (40 CFR 141.80). A result is not a measurement of any one tap.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Arizona records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.