Community Water System · PWSID CO0149685

Roaring Fork MHP

Serves 200 peopleGroundwaterOwner: PrivateNorthbrook, Illinois

Nothing open that measures the water, but 1 open testing or paperwork violation.

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 2015: 150 violations. 1 over the limit · 1 treatment lapse · 144 missed or late tests · 4 notices or reports. Most recent began 2024-10-01.

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

1Over the limit

1Treatment lapse

144Missed or late test1 open

4Notice or report

More violations on record than 98% of active water systems in Illinois. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

One square ≈ 9 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.

<1% over the limit · 1<1% treatment lapse · 196% missed or late test · 1443% notice or report · 4

Across Illinois, 81% of violations are missed or late tests and 3% 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 6 results on file · action level 15 ppb

0.8 ppb

0.5 ppb

0.4 ppb

0 ppb

Open now (1)

2024-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen

Every violation on record

2024-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen
2024-08-01Revised Total Coliform RuleOtherBack in compliance
2024-08-01Unknown contaminantRecord KeepingBack in compliance
2024-01-01Nitrate ×2Monitoring, RegularBack in compliance
2023-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
2023-01-01Nitrate ×2Monitoring, RegularBack in compliance
2023-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
2023-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
2022-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
2020-08-01DBP Stage 1Treatment Technique No Certif. OperatorBack in compliance
2020-01-01Styrene ×2Monitoring, RegularBack in compliance
2020-01-01Ethylbenzene ×2Monitoring, RegularBack in compliance
2020-01-01Toluene ×2Monitoring, RegularBack in compliance
2020-01-01Benzene ×2Monitoring, RegularBack in compliance
2020-01-01Chlorobenzene ×2Monitoring, RegularBack in compliance
2020-01-01Tetrachloroethylene ×2Monitoring, RegularBack in compliance
2020-01-011,1,2-Trichloroethane ×2Monitoring, RegularBack in compliance
2020-01-01Trichloroethylene ×2Monitoring, RegularBack in compliance
2020-01-011,2-Dichloropropane ×2Monitoring, RegularBack in compliance
2020-01-01Carbon tetrachloride ×2Monitoring, RegularBack in compliance
2020-01-011,1,1-Trichloroethane ×2Monitoring, RegularBack in compliance
2020-01-011,2-Dichloroethane ×2Monitoring, RegularBack in compliance
2020-01-01trans-1,2-Dichloroethylene ×2Monitoring, RegularBack in compliance
2020-01-011,1-Dichloroethylene ×2Monitoring, RegularBack in compliance
2020-01-01Vinyl chloride ×2Monitoring, RegularBack in compliance

Show the other 58 entries

2020-01-01p-Dichlorobenzene ×2Monitoring, RegularBack in compliance
2020-01-01o-Dichlorobenzene ×2Monitoring, RegularBack in compliance
2020-01-01Dichloromethane ×2Monitoring, RegularBack in compliance
2020-01-01Xylenes, Total ×2Monitoring, RegularBack in compliance
2020-01-01cis-1,2-Dichloroethylene ×2Monitoring, RegularBack in compliance
2020-01-011,2,4-Trichlorobenzene ×2Monitoring, RegularBack in compliance
2020-01-01Chlordane ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Ethylene Dibromide ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-011, 2-Dibromo-3-Chloropropane ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Total Polychlorinated Biphenyls (PCB) ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Pentachlorophenol ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Benzo(a)pyrene ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Hexachlorobenzene ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-012, 4, 5-Tp ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-012, 4-D ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Heptachlor epoxide ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Heptachlor ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Lasso ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Atrazine ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Aldicarb ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Carbofuran ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Aldicarb sulfone ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Aldicarb sulfoxide ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Hexachlorocyclopentadiene ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Dinoseb ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Picloram ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Di(2-ethylhexyl) phthalate ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Simazine ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Oxamyl ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Di(2-ethylhexyl) adipate ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Endothall ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Diquat ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Dalapon ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Toxaphene ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Methoxychlor ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Bhc-Gamma ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Endrin ×2Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Fluoride ×2Monitoring, RegularBack in compliance
2019-07-09Unknown contaminantRecord KeepingBack in compliance
2019-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
2018-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
2017-01-01Selenium ×2Monitoring, RegularBack in compliance
2017-01-01Thallium, Total ×2Monitoring, RegularBack in compliance
2017-01-01Beryllium, Total ×2Monitoring, RegularBack in compliance
2017-01-01Antimony, Total ×2Monitoring, RegularBack in compliance
2017-01-01Sodium ×2Monitoring, RegularBack in compliance
2017-01-01Nickel ×2Monitoring, RegularBack in compliance
2017-01-01Mercury ×2Monitoring, RegularBack in compliance
2017-01-01Chromium ×2Monitoring, RegularBack in compliance
2017-01-01Cadmium ×2Monitoring, RegularBack in compliance
2017-01-01Barium ×2Monitoring, RegularBack in compliance
2017-01-01Arsenic ×2Monitoring, RegularBack in compliance
2016-02-02E. ColiMonitoring, Source Water (GWR)Back in compliance
2016-02-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
2016-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
2016-01-01Coliform (TCR)Monitoring, Repeat Major (TCR)Back in compliance
2016-01-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
2015-01-01Nitrate ×2Monitoring, RegularBack in compliance

System details

Population served	200
Service connections	51
Water source	Groundwater
System type	Community Water System
Owner	Private
Status	Active
City	Northbrook
EPA ZIP on file	60065

Areas served

Pitkin County

Reading this record

Roaring Fork MHP is a community water system that draws from groundwater and serves about 200 people in Northbrook, Illinois. 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.