Community Water System · PWSID ID4080055

Wilderness Ranch Owners Association Inc

Serves 525 peopleSurface WaterOwner: PrivateBoise, Idaho
Nothing open that measures the water, but 4 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 2006: 57 violations. 5 over the limit · 3 treatment lapses · 48 missed or late tests · 1 notice or report. Most recent began 2025-04-01.

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

5Over the limit
3Treatment lapse
48Missed or late test4 open
1Notice or report

More violations on record than 95% of active water systems in Idaho. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

20052006 · Missed or late test: 120102011 · Missed or late test: 12013 · Missed or late test: 12015 · Over the limit: 32015 · Notice or report: 120152016 · Over the limit: 22016 · Treatment lapse: 22016 · Missed or late test: 132016 · Missed or late test: 132016 · Missed or late test: 132016 · Missed or late test: 132016 · Missed or late test: 132017 · Treatment lapse: 12017 · Missed or late test: 272017 · Missed or late test: 272017 · Missed or late test: 272017 · Missed or late test: 272017 · Missed or late test: 272017 · Missed or late test: 272017 · Missed or late test: 272017 · Missed or late test: 272017 · Missed or late test: 272018 · Missed or late test: 120202021 · Missed or late test: 22022 · Missed or late test: 12025 · Missed or late test: 12025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
9% over the limit · 55% treatment lapse · 384% missed or late test · 482% notice or report · 1

Across Idaho, 80% 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×+Total Haloacetic Acids (HAA5)Nitrate2016-04-01 · Total Haloacetic Acids (HAA5): measured 0.0740 MG/L vs limit 0.0600 MG/L (1.2×)2016-01-01 · Total Haloacetic Acids (HAA5): measured 0.1160 MG/L vs limit 0.0600 MG/L (1.9×)2015-10-01 · Total Haloacetic Acids (HAA5): measured 0.1070 MG/L vs limit 0.0600 MG/L (1.8×)2015-07-01 · Total Haloacetic Acids (HAA5): measured 0.0730 MG/L vs limit 0.0600 MG/L (1.2×)2015-01-01 · Nitrate: measured 13.00 MG/L vs limit 10.00 MG/L (1.3×)
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 13 results on file · action level 15 ppb

29 ppb
22 ppb
15 ppb
10 ppb
9 ppb
7 ppb
7 ppb
7 ppb
6 ppb
4 ppb
4 ppb
3 ppb
1 ppb

Open now (4)

  1. 2018-04-01Lead and Copper RuleLead Consumer NoticeOpen
  2. 2017-09-29Lead and Copper RuleLead Consumer NoticeOpen
  3. 2016-07-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/ROpen
  4. 2016-01-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/ROpen

Every violation on record

  1. 2025-04-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  2. 2022-06-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Period ended · no return to compliance on file
  3. 2021-12-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  4. 2021-12-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  5. 2018-04-01Lead and Copper RuleLead Consumer NoticeOpen
  6. 2017-10-15E. ColiMonitoring, Source Water (LT2)Back in compliance
  7. 2017-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  8. 2017-10-01E. ColiMonitoring, Source Water (LT2)Back in compliance
  9. 2017-09-29Lead and Copper RuleLead Consumer NoticeOpen
  10. 2017-09-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  11. 2017-08-31Lead and Copper RulePublic EducationBack in compliance
  12. 2017-08-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  13. 2017-08-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  14. 2017-08-01Revised Total Coliform RuleMONBack in compliance
  15. 2017-07-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  16. 2017-07-01Surface water treatment (SWTR) ×2Monitoring of Treatment (SWTR-Filter)Back in compliance
  17. 2017-07-01Chlorine ×3Monitoring and Reporting (DBP)Back in compliance
  18. 2017-06-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  19. 2017-06-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  20. 2017-04-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  21. 2017-03-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  22. 2017-03-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  23. 2017-01-01Endothall ×2Monitoring, RegularPeriod ended · no return to compliance on file
  24. 2017-01-01Lead and Copper Rule ×3Water Quality Parameter M/RPeriod ended · no return to compliance on file
  25. 2017-01-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
Show the other 24 entries
  1. 2017-01-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  2. 2017-01-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  3. 2016-11-30Lead and Copper RulePublic EducationBack in compliance
  4. 2016-11-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  5. 2016-11-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  6. 2016-10-01Lead and Copper RuleOCCT/SOWT Study/RecommendationBack in compliance
  7. 2016-09-01Surface water filtration (IESWTR)Monitoring, Turbidity (Enhanced SWTR)Back in compliance
  8. 2016-09-01Surface water treatment (SWTR)Monitoring of Treatment (SWTR-Filter)Back in compliance
  9. 2016-07-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/ROpen
  10. 2016-07-01pH ×2Water Quality Parameter M/RPeriod ended · no return to compliance on file
  11. 2016-07-01Temperature (Centigrade) ×2Water Quality Parameter M/RPeriod ended · no return to compliance on file
  12. 2016-07-01Lead and Copper RuleWater Quality Parameter M/RPeriod ended · no return to compliance on file
  13. 2016-07-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/RBack in compliance
  14. 2016-07-01NitrateMonitoring, RegularBack in compliance
  15. 2016-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0740 MG/L · limit 0.0600 MG/LBack in compliance
  16. 2016-01-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/ROpen
  17. 2016-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.1160 MG/L · limit 0.0600 MG/LBack in compliance
  18. 2015-12-22Public NoticePN Violation for NPDWR ViolationBack in compliance
  19. 2015-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.1070 MG/L · limit 0.0600 MG/LBack in compliance
  20. 2015-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0730 MG/L · limit 0.0600 MG/LBack in compliance
  21. 2015-01-01NitrateMCL, Single Samplemeasured 13.00 MG/L · limit 10.00 MG/LBack in compliance
  22. 2013-12-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  23. 2011-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  24. 2006-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance

System details

Population served525
Service connections237
Water sourceSurface Water
System typeCommunity Water System
OwnerPrivate
StatusActive
CityBoise
EPA ZIP on file83716

Areas served

  • Boise County

Reading this record

Wilderness Ranch Owners Association Inc is a community water system that draws from surface water and serves about 525 people in Boise, Idaho. 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.