Non-Transient Non-Community · PWSID AZ0412019

Adot Border Patrol

Serves 100 peopleGroundwaterOwner: StatePhoenix, Arizona
Nothing open right now.

On record since 2011: 43 violations. 12 over the limit · 1 treatment lapse · 19 missed or late tests · 11 notices or reports. Most recent began 2025-07-18.

For this year's test results, ask the utility for its annual Consumer Confidence Report. Every community system must publish one.

12Over the limit
1Treatment lapse
19Missed or late test
11Notice or report

More violations on record than 84% of active water systems in Arizona. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

200520102011 · Missed or late test: 12013 · Missed or late test: 32013 · Missed or late test: 32013 · Missed or late test: 32014 · Missed or late test: 12015 · Missed or late test: 120152016 · Missed or late test: 52016 · Missed or late test: 52016 · Missed or late test: 52016 · Missed or late test: 52016 · Missed or late test: 52017 · Notice or report: 12018 · Missed or late test: 12019 · Notice or report: 12020 · Missed or late test: 120202021 · Missed or late test: 32021 · Missed or late test: 32021 · Missed or late test: 32021 · Notice or report: 22021 · Notice or report: 22022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42022 · Missed or late test: 12022 · Notice or report: 12023 · Over the limit: 12023 · Missed or late test: 12023 · Notice or report: 22023 · Notice or report: 22024 · Over the limit: 42024 · Over the limit: 42024 · Over the limit: 42024 · Over the limit: 42024 · Treatment lapse: 12024 · Notice or report: 22024 · Notice or report: 22025 · Over the limit: 32025 · Over the limit: 32025 · Over the limit: 32025 · Missed or late test: 12025 · Notice or report: 22025 · Notice or report: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
28% over the limit · 122% treatment lapse · 144% missed or late test · 1926% notice or report · 11

Across Arizona, 65% of violations are missed or late tests and 5% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Nitrate2025-07-01 · Nitrate: measured 26.00 MG/L vs limit 10.00 MG/L (2.6×)2025-04-01 · Nitrate: measured 24.00 MG/L vs limit 10.00 MG/L (2.4×)2025-01-01 · Nitrate: measured 26.00 MG/L vs limit 10.00 MG/L (2.6×)2024-10-01 · Nitrate: measured 27.00 MG/L vs limit 10.00 MG/L (2.7×)2024-07-01 · Nitrate: measured 23.00 MG/L vs limit 10.00 MG/L (2.3×)2024-04-01 · Nitrate: measured 14.00 MG/L vs limit 10.00 MG/L (1.4×)2024-01-01 · Nitrate: measured 21.00 MG/L vs limit 10.00 MG/L (2.1×)2023-01-01 · Nitrate: measured 17.00 MG/L vs limit 10.00 MG/L (1.7×)2022-10-01 · Nitrate: measured 15.00 MG/L vs limit 10.00 MG/L (1.5×)2022-07-01 · Nitrate: measured 15.00 MG/L vs limit 10.00 MG/L (1.5×)2022-04-01 · Nitrate: measured 11.50 MG/L vs limit 10.00 MG/L (1.1×)2022-01-01 · Nitrate: measured 12.00 MG/L vs limit 10.00 MG/L (1.2×)
Each dot is one over-the-limit violation: the measured value divided by the limit it broke, on a log scale. Most legal limits for chemicals are running averages set for a lifetime of drinking, so “just over” and “ten times over” are very different news. Hover a dot for the numbers.

Lead & copper at the tap

Utilities sample taps in homes most likely to have lead pipes, and report the 90th-percentile result: 9 in 10 homes sampled came in at or below this number. Above the red line (the action level) the utility must act. The action level is not a safe level; EPA's health goal for lead is zero. EPA's file does not date these results, so they are shown highest first.

Lead, 90th percentile 4 results on file · action level 15 ppb

3.9 ppb
2.5 ppb
0 ppb
0 ppb

Every violation on record

  1. 2025-07-18Public NoticePN Violation for NPDWR ViolationBack in compliance
  2. 2025-07-01NitrateMCL, Single Samplemeasured 26.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  3. 2025-06-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  4. 2025-04-01NitrateMCL, Single Samplemeasured 24.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  5. 2025-03-16Public NoticePN Violation for NPDWR ViolationBack in compliance
  6. 2025-01-01NitrateMCL, Single Samplemeasured 26.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  7. 2024-12-20Public NoticePN Violation for NPDWR ViolationBack in compliance
  8. 2024-10-17Lead service line inventoryTTBack in compliance
  9. 2024-10-17Lead service line inventoryRPTBack in compliance
  10. 2024-10-01NitrateMCL, Single Samplemeasured 27.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  11. 2024-07-01NitrateMCL, Single Samplemeasured 23.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  12. 2024-04-01NitrateMCL, Single Samplemeasured 14.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  13. 2024-01-01NitrateMCL, Averagemeasured 21.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  14. 2023-12-07Public NoticePN Violation for NPDWR ViolationBack in compliance
  15. 2023-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  16. 2023-02-01Revised Total Coliform RuleRPTBack in compliance
  17. 2023-01-01NitrateMCL, Single Samplemeasured 17.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  18. 2022-10-01NitrateMCL, Single Samplemeasured 15.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  19. 2022-10-01Revised Total Coliform RuleMONBack in compliance
  20. 2022-08-20Public NoticePN Violation for NPDWR ViolationBack in compliance
  21. 2022-07-01NitrateMCL, Single Samplemeasured 15.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  22. 2022-04-01NitrateMCL, Averagemeasured 11.50 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  23. 2022-01-01NitrateMCL, Single Samplemeasured 12.00 MG/L · limit 10.00 MG/LPeriod ended · no return to compliance on file
  24. 2021-10-01NitrateMonitoring, RegularBack in compliance
  25. 2021-08-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
Show the other 18 entries
  1. 2021-08-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  2. 2021-03-01Revised Total Coliform RuleRPTBack in compliance
  3. 2021-02-01Revised Total Coliform RuleRPTBack in compliance
  4. 2020-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  5. 2019-10-01Revised Total Coliform RuleRPTBack in compliance
  6. 2018-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  7. 2017-02-01Revised Total Coliform RuleRPTBack in compliance
  8. 2016-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  9. 2016-08-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  10. 2016-08-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  11. 2016-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  12. 2016-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  13. 2015-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  14. 2014-01-012, 3, 7, 8-TcddMonitoring, RegularBack in compliance
  15. 2013-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  16. 2013-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  17. 2013-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  18. 2011-01-01Bhc-GammaMonitoring, RegularBack in compliance

System details

Population served100
Service connections4
Water sourceGroundwater
System typeNon-Transient Non-Community
OwnerState
StatusActive
CityPhoenix
EPA ZIP on file85007-3217

Areas served

  • Sonoita, Santa Cruz County

Reading this record

Adot Border Patrol is a non-transient non-community that draws from groundwater and serves about 100 people in Phoenix, Arizona. Everything above comes from the EPA's Safe Drinking Water Information System (SDWIS), where states report every violation by every public water system.

Four kinds of violation. Only one is a measurement of the water: over the limit means a test came back above a legal maximum (an MCL). A treatment lapse means a required protective step was not done, such as disinfection, filtration, fixing a defect an inspector found, or filing a lead-pipe inventory. A missed or late test means a required test was skipped or never reported. That is the most common kind, and the most misread: it does not mean the water was bad, and it does not mean the water was fine. Notices and reports covers public notices and the annual Consumer Confidence Report.

Status. “Back in compliance” means the state recorded a return to compliance. “Period ended” means the violation's compliance period is over but no return to compliance was ever filed, which is common in older records. EPA's federal copy lags state records by months, so call the utility for anything current.