Community Water System · PWSID AZ0409013

Porter Creek Dwid

Serves 250 peopleGroundwaterOwner: Public/PrivateLakeside, Arizona
Nothing open that measures the water, but 3 open testing or paperwork violations.

A missed test is not evidence of bad water. It also is not evidence of good water: for that period nobody checked.

On record since 2002: 71 violations. 1 treatment lapse · 47 missed or late tests · 23 notices or reports. Most recent began 2025-09-01.

None of them is a measurement of contaminated water.

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

0Over the limit
1Treatment lapse
47Missed or late test
23Notice or report3 open

More violations on record than 91% 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

2002 · Notice or report: 12003 · Notice or report: 12004 · Missed or late test: 12004 · Notice or report: 12005 · Notice or report: 120052006 · Notice or report: 12007 · Missed or late test: 12007 · Notice or report: 12010 · Missed or late test: 12010 · Notice or report: 22010 · Notice or report: 220102011 · Notice or report: 22011 · Notice or report: 22012 · Notice or report: 22012 · Notice or report: 22014 · Notice or report: 12015 · Missed or late test: 52015 · Missed or late test: 52015 · Missed or late test: 52015 · Missed or late test: 52015 · Missed or late test: 520152016 · Treatment lapse: 12016 · Notice or report: 12017 · Missed or late test: 22017 · Missed or late test: 22017 · Notice or report: 22017 · Notice or report: 22018 · Missed or late test: 52018 · Missed or late test: 52018 · Missed or late test: 52018 · Missed or late test: 52018 · Missed or late test: 52018 · Notice or report: 22018 · Notice or report: 22019 · Missed or late test: 62019 · Missed or late test: 62019 · Missed or late test: 62019 · Missed or late test: 62019 · Missed or late test: 62019 · Missed or late test: 62019 · Notice or report: 12020 · Missed or late test: 32020 · Missed or late test: 32020 · Missed or late test: 320202021 · Missed or late test: 52021 · Missed or late test: 52021 · Missed or late test: 52021 · Missed or late test: 52021 · Missed or late test: 52021 · Notice or report: 12022 · Missed or late test: 32022 · Missed or late test: 32022 · Missed or late test: 32022 · Notice or report: 12023 · Missed or late test: 32023 · Missed or late test: 32023 · Missed or late test: 32024 · Missed or late test: 62024 · Missed or late test: 62024 · Missed or late test: 62024 · Missed or late test: 62024 · Missed or late test: 62024 · Missed or late test: 62024 · Notice or report: 12025 · Missed or late test: 62025 · Missed or late test: 62025 · Missed or late test: 62025 · Missed or late test: 62025 · Missed or late test: 62025 · Missed or late test: 62025 · Notice or report: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
1% treatment lapse · 166% missed or late test · 4732% notice or report · 23

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

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 7 results on file · action level 15 ppb

4.6 ppb
3.3 ppb
3.2 ppb
1.6 ppb
1.6 ppb
1.3 ppb
0 ppb

Open now (3)

  1. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen
  2. 2024-10-02Consumer Confidence RuleCCR Inadequate ReportingOpen
  3. 2021-12-10Public NoticePN Violation for NPDWR ViolationOpen

Every violation on record

  1. 2025-09-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  2. 2025-08-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  3. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen
  4. 2025-07-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  5. 2025-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  6. 2025-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  7. 2025-01-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  8. 2024-10-02Consumer Confidence RuleCCR Inadequate ReportingOpen
  9. 2024-09-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  10. 2024-08-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  11. 2024-07-01ChlorineMonitoring and Reporting (DBP)Period ended · no return to compliance on file
  12. 2024-07-01Revised Total Coliform RuleMONBack in compliance
  13. 2024-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  14. 2024-02-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  15. 2023-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  16. 2023-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  17. 2023-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  18. 2022-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  19. 2022-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  20. 2022-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  21. 2022-06-30Public NoticePN Violation for NPDWR ViolationBack in compliance
  22. 2021-12-10Public NoticePN Violation for NPDWR ViolationOpen
  23. 2021-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  24. 2021-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  25. 2021-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
Show the other 46 entries
  1. 2021-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  2. 2021-05-01Revised Total Coliform RuleMONBack in compliance
  3. 2020-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  4. 2020-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  5. 2020-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  6. 2019-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  7. 2019-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  8. 2019-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  9. 2019-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  10. 2019-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  11. 2019-03-01Revised Total Coliform RuleRPTBack in compliance
  12. 2019-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  13. 2018-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  14. 2018-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  15. 2018-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  16. 2018-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  17. 2018-08-01Revised Total Coliform RuleRPTBack in compliance
  18. 2018-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  19. 2018-07-01Revised Total Coliform RuleRPTBack in compliance
  20. 2017-12-01Revised Total Coliform RuleRPTBack in compliance
  21. 2017-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  22. 2017-10-01Revised Total Coliform RuleRPTBack in compliance
  23. 2017-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  24. 2016-12-31Lead and Copper RuleOCCT/SOWT Study/RecommendationBack in compliance
  25. 2016-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  26. 2015-12-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  27. 2015-10-08E. ColiMonitoring, Source Water (GWR)Back in compliance
  28. 2015-10-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  29. 2015-09-01Coliform (TCR)Monitoring, Repeat Major (TCR)Back in compliance
  30. 2015-08-05E. ColiMonitoring, Source Water (GWR)Back in compliance
  31. 2014-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  32. 2012-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  33. 2012-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  34. 2011-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  35. 2011-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  36. 2010-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  37. 2010-08-18E. ColiMonitoring, Source Water (GWR)Back in compliance
  38. 2010-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  39. 2007-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  40. 2007-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  41. 2006-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  42. 2005-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  43. 2004-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  44. 2004-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  45. 2003-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  46. 2002-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served250
Service connections102
Water sourceGroundwater
System typeCommunity Water System
OwnerPublic/Private
StatusActive
CityLakeside
EPA ZIP on file85929

Areas served

  • Lakeside, Navajo County

Reading this record

Porter Creek Dwid is a community water system that draws from groundwater and serves about 250 people in Lakeside, 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.