Non-Transient Non-Community · PWSID CO0254200

Twenty Mile Coal Co

Serves 475 peopleSurface Water PurchasedOwner: PrivateOak Creek, Colorado

Nothing open right now.

On record since 2007: 73 violations. 73 missed or late tests. Most recent began 2025-04-01.

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

0Treatment lapse

73Missed or late test

0Notice or report

More violations on record than 95% 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

One square ≈ 6 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.

100% missed or late test · 73

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 12 results on file · action level 15 ppb

10.4 ppb

2.9 ppb

2.5 ppb

2.2 ppb

1.6 ppb

1.2 ppb

0.7 ppb

0.3 ppb

0 ppb

Every violation on record

2025-04-01Lead and Copper RuleLead Consumer NoticeBack in compliance
2022-01-01NitrateMonitoring, RegularBack in compliance
2022-01-01Ethylene DibromideMonitoring, RegularBack in compliance
2020-01-01Di(2-ethylhexyl) adipateMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01OxamylMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01SimazineMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01EndrinMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Bhc-GammaMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01MethoxychlorMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01ToxapheneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01DalaponMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01DiquatMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01EndothallMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Di(2-ethylhexyl) phthalateMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01PicloramMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01DinosebMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01HexachlorocyclopentadieneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Aldicarb sulfoxideMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Aldicarb sulfoneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01CarbofuranMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01AldicarbMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01AtrazineMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01LassoMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01HeptachlorMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Heptachlor epoxideMonitoring, RegularPeriod ended · no return to compliance on file

Show the other 48 entries

2020-01-012, 4-DMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-012, 4, 5-TpMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01HexachlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Benzo(a)pyreneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01PentachlorophenolMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularPeriod ended · no return to compliance on file
2020-01-01ChlordaneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01SeleniumMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Thallium, TotalMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Beryllium, TotalMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Antimony, TotalMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01SodiumMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01NickelMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01MercuryMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01ChromiumMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01CadmiumMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01BariumMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01ArsenicMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01FluorideMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01StyreneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01EthylbenzeneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01TolueneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01BenzeneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01ChlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01TetrachloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-011,1,2-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01TrichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-011,2-DichloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Carbon tetrachlorideMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-011,1,1-TrichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-011,2-DichloroethaneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01trans-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-011,1-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Vinyl chlorideMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01p-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01o-DichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01DichloromethaneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01Xylenes, TotalMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-01cis-1,2-DichloroethyleneMonitoring, RegularPeriod ended · no return to compliance on file
2020-01-011,2,4-TrichlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
2017-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
2017-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
2016-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
2016-01-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
2015-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
2015-09-01E. ColiMonitoring, Source Water (GWR)Back in compliance
2010-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
2007-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served	475
Service connections	5
Water source	Surface Water Purchased
System type	Non-Transient Non-Community
Owner	Private
Status	Active
City	Oak Creek
EPA ZIP on file	80467

Areas served

Routt County

Reading this record

Twenty Mile Coal Co is a non-transient non-community that draws from surface water purchased and serves about 475 people in Oak Creek, 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.