Non-Transient Non-Community · PWSID CO0207192

Blue Leaf School LLC

Serves 65 peopleGroundwater Under InfluenceOwner: PrivateAurora, ColoradoServes a school or daycare
3 open treatment violations.

Open for: Groundwater Rule. EPA counts treatment-technique violations as health-based: a required protective step was not done. It is not a measurement of contamination.

On record since 1989: 42 violations. 6 treatment lapses · 34 missed or late tests · 2 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
6Treatment lapse3 open
34Missed or late test1 open
2Notice or report2 open

More violations on record than 90% of active water systems in Colorado. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

1989 · Missed or late test: 119901991 · Missed or late test: 1199520002005201020152017 · Treatment lapse: 32017 · Treatment lapse: 32017 · Missed or late test: 32017 · Missed or late test: 32020 · Missed or late test: 220202021 · Missed or late test: 62021 · Missed or late test: 62021 · Missed or late test: 62022 · Missed or late test: 22024 · Treatment lapse: 32024 · Treatment lapse: 32024 · Missed or late test: 102024 · Missed or late test: 102024 · Missed or late test: 102024 · Missed or late test: 102024 · Missed or late test: 102025 · Missed or late test: 92025 · Missed or late test: 92025 · Missed or late test: 92025 · Missed or late test: 92025 · Missed or late test: 92025 · Notice or report: 22025
One square ≈ 2 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
14% treatment lapse · 681% missed or late test · 345% notice or report · 2

Across Colorado, 74% of violations are missed or late tests and 6% 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

1.2 ppb
1 ppb
0.9 ppb
0.8 ppb
0.5 ppb
0 ppb
0 ppb

Open now (6)

  1. 2025-07-04Public NoticePN Violation for NPDWR ViolationOpen
  2. 2025-04-04Public NoticePN Violation for NPDWR ViolationOpen
  3. 2024-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen
  4. 2024-09-22Groundwater Rule ×3Failure To Address DeficiencyOpen

Every violation on record

  1. 2025-09-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  2. 2025-08-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  3. 2025-07-04Public NoticePN Violation for NPDWR ViolationOpen
  4. 2025-07-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  5. 2025-06-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  6. 2025-05-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  7. 2025-04-04Public NoticePN Violation for NPDWR ViolationOpen
  8. 2025-04-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  9. 2025-03-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  10. 2025-02-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  11. 2025-01-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  12. 2024-12-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  13. 2024-11-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  14. 2024-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen
  15. 2024-10-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  16. 2024-09-22Groundwater Rule ×3Failure To Address DeficiencyOpen
  17. 2024-09-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  18. 2024-08-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  19. 2024-07-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  20. 2024-06-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  21. 2024-05-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  22. 2024-04-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  23. 2022-01-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  24. 2022-01-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  25. 2021-09-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
Show the other 15 entries
  1. 2021-09-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  2. 2021-03-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  3. 2021-03-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  4. 2021-03-01Revised Total Coliform RuleMONBack in compliance
  5. 2021-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  6. 2020-07-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  7. 2020-07-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  8. 2017-09-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  9. 2017-09-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  10. 2017-05-01E. ColiMonitoring, Source Water (LT2)Back in compliance
  11. 2017-04-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  12. 2017-03-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  13. 2017-02-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  14. 1991-04-01Coliform (TCR)Monitoring, Routine Major (TCR)System inactive
  15. 1989-10-01Coliform (Pre-TCR)Monitoring, RegularSystem inactive

System details

Population served65
Service connections1
Water sourceGroundwater Under Influence
System typeNon-Transient Non-Community
OwnerPrivate
StatusActive
CityAurora
EPA ZIP on file80013

Areas served

  • Boulder County

Reading this record

Blue Leaf School LLC is a non-transient non-community that draws from groundwater under influence and serves about 65 people in Aurora, Colorado. 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.