Community Water System · PWSID CO0212466

Lake Sanchez Estates

Serves 34 peopleGroundwaterOwner: PrivateAlamosa, Colorado

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 2018: 223 violations. 8 treatment lapses · 189 missed or late tests · 26 notices or reports. Most recent began 2024-07-01.

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

8Treatment lapse

189Missed or late test

26Notice or report1 open

More violations on record than 99% 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 ≈ 15 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.

4% treatment lapse · 885% missed or late test · 18912% notice or report · 26

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 6 results on file · action level 15 ppb

1 ppb

0.5 ppb

0 ppb

Open now (1)

2022-10-27Public NoticePN Violation without NPDWR ViolationOpen

Every violation on record

2024-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
2024-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
2024-04-01Revised Total Coliform RuleMONBack in compliance
2024-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
2023-04-28Public NoticePN Violation without NPDWR ViolationBack in compliance
2023-03-28Revised Total Coliform RuleOtherBack in compliance
2023-01-27Public NoticePN Violation without NPDWR ViolationBack in compliance
2023-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
2022-11-29Public NoticePN Violation for NPDWR ViolationBack in compliance
2022-10-27Public NoticePN Violation without NPDWR ViolationOpen
2022-08-01Revised Total Coliform RuleMONBack in compliance
2022-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
2022-05-29Public NoticePN Violation for NPDWR ViolationBack in compliance
2022-04-27Public NoticePN Violation without NPDWR ViolationBack in compliance
2022-02-01Revised Total Coliform RuleMONBack in compliance
2022-01-01NitrateMonitoring, RegularBack in compliance
2022-01-01StyreneMonitoring, RegularBack in compliance
2022-01-01EthylbenzeneMonitoring, RegularBack in compliance
2022-01-01TolueneMonitoring, RegularBack in compliance
2022-01-01BenzeneMonitoring, RegularBack in compliance
2022-01-01ChlorobenzeneMonitoring, RegularBack in compliance
2022-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
2022-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
2022-01-01TrichloroethyleneMonitoring, RegularBack in compliance
2022-01-011,2-DichloropropaneMonitoring, RegularBack in compliance

Show the other 187 entries

2022-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
2022-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
2022-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
2022-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2022-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
2022-01-01Vinyl chlorideMonitoring, RegularBack in compliance
2022-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
2022-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
2022-01-01DichloromethaneMonitoring, RegularBack in compliance
2022-01-01Xylenes, TotalMonitoring, RegularBack in compliance
2022-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2022-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
2022-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
2021-10-01TolueneMonitoring, RegularBack in compliance
2021-09-01Public NoticePN Violation for NPDWR ViolationBack in compliance
2021-07-27Public NoticePN Violation without NPDWR ViolationBack in compliance
2020-12-01Revised Total Coliform RuleMONBack in compliance
2020-10-27Public NoticePN Violation without NPDWR ViolationBack in compliance
2020-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
2020-10-01Revised Total Coliform RuleMONBack in compliance
2020-09-01Public NoticePN Violation for NPDWR ViolationBack in compliance
2020-09-01Revised Total Coliform RuleMONBack in compliance
2020-08-01Revised Total Coliform RuleMONBack in compliance
2020-07-27Public NoticePN Violation without NPDWR ViolationBack in compliance
2020-07-01FluorideMonitoring, RegularBack in compliance
2020-07-01NitrateMonitoring, RegularBack in compliance
2020-07-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
2020-07-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
2020-07-01Combined UraniumMonitoring, RegularBack in compliance
2020-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
2020-07-01Revised Total Coliform RuleMONBack in compliance
2020-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
2020-06-24Public NoticePN Violation for NPDWR ViolationBack in compliance
2020-06-01Public NoticePN Violation for NPDWR ViolationBack in compliance
2020-05-01Revised Total Coliform RuleMONBack in compliance
2020-04-01GlyphosateMonitoring, RegularBack in compliance
2020-04-01SeleniumMonitoring, RegularBack in compliance
2020-04-01Thallium, TotalMonitoring, RegularBack in compliance
2020-04-01Beryllium, TotalMonitoring, RegularBack in compliance
2020-04-01Antimony, TotalMonitoring, RegularBack in compliance
2020-04-01SodiumMonitoring, RegularBack in compliance
2020-04-01NickelMonitoring, RegularBack in compliance
2020-04-01MercuryMonitoring, RegularBack in compliance
2020-04-01ChromiumMonitoring, RegularBack in compliance
2020-04-01CadmiumMonitoring, RegularBack in compliance
2020-04-01BariumMonitoring, RegularBack in compliance
2020-04-01ArsenicMonitoring, RegularBack in compliance
2020-04-01ChlordaneMonitoring, RegularBack in compliance
2020-04-01Ethylene DibromideMonitoring, RegularBack in compliance
2020-04-011, 2-Dibromo-3-ChloropropaneMonitoring, RegularBack in compliance
2020-04-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularBack in compliance
2020-04-01PentachlorophenolMonitoring, RegularBack in compliance
2020-04-01Benzo(a)pyreneMonitoring, RegularBack in compliance
2020-04-01HexachlorobenzeneMonitoring, RegularBack in compliance
2020-04-012, 4, 5-TpMonitoring, RegularBack in compliance
2020-04-012, 4-DMonitoring, RegularBack in compliance
2020-04-01Heptachlor epoxideMonitoring, RegularBack in compliance
2020-04-01HeptachlorMonitoring, RegularBack in compliance
2020-04-01LassoMonitoring, RegularBack in compliance
2020-04-01AtrazineMonitoring, RegularBack in compliance
2020-04-01CarbofuranMonitoring, RegularBack in compliance
2020-04-01HexachlorocyclopentadieneMonitoring, RegularBack in compliance
2020-04-01DinosebMonitoring, RegularBack in compliance
2020-04-01PicloramMonitoring, RegularBack in compliance
2020-04-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
2020-04-01SimazineMonitoring, RegularBack in compliance
2020-04-01OxamylMonitoring, RegularBack in compliance
2020-04-01Di(2-ethylhexyl) adipateMonitoring, RegularBack in compliance
2020-04-01EndothallMonitoring, RegularBack in compliance
2020-04-01DiquatMonitoring, RegularBack in compliance
2020-04-01DalaponMonitoring, RegularBack in compliance
2020-04-01ToxapheneMonitoring, RegularBack in compliance
2020-04-01MethoxychlorMonitoring, RegularBack in compliance
2020-04-01Bhc-GammaMonitoring, RegularBack in compliance
2020-04-01EndrinMonitoring, RegularBack in compliance
2020-04-01Gross Alpha, Excl. Radon and U ×2Monitoring, RegularBack in compliance
2020-04-01Combined Uranium ×2Monitoring, RegularBack in compliance
2020-04-01Combined Radium (-226 and -228) ×2Monitoring, RegularBack in compliance
2020-04-01NitrateMonitoring, RegularBack in compliance
2020-04-01FluorideMonitoring, RegularBack in compliance
2020-04-01StyreneMonitoring, RegularBack in compliance
2020-04-01EthylbenzeneMonitoring, RegularBack in compliance
2020-04-01TolueneMonitoring, RegularBack in compliance
2020-04-01BenzeneMonitoring, RegularBack in compliance
2020-04-01ChlorobenzeneMonitoring, RegularBack in compliance
2020-04-01TetrachloroethyleneMonitoring, RegularBack in compliance
2020-04-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
2020-04-01TrichloroethyleneMonitoring, RegularBack in compliance
2020-04-011,2-DichloropropaneMonitoring, RegularBack in compliance
2020-04-01Carbon tetrachlorideMonitoring, RegularBack in compliance
2020-04-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
2020-04-011,2-DichloroethaneMonitoring, RegularBack in compliance
2020-04-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2020-04-011,1-DichloroethyleneMonitoring, RegularBack in compliance
2020-04-01Vinyl chlorideMonitoring, RegularBack in compliance
2020-04-01p-DichlorobenzeneMonitoring, RegularBack in compliance
2020-04-01o-DichlorobenzeneMonitoring, RegularBack in compliance
2020-04-01DichloromethaneMonitoring, RegularBack in compliance
2020-04-01Xylenes, TotalMonitoring, RegularBack in compliance
2020-04-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2020-04-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
2020-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
2020-04-01Revised Total Coliform RuleMONBack in compliance
2020-03-14Public NoticePN Violation for NPDWR ViolationBack in compliance
2020-03-01Revised Total Coliform RuleMONBack in compliance
2020-02-11Groundwater Rule ×6Failure To Address DeficiencyBack in compliance
2020-02-06Public NoticePN Violation without NPDWR ViolationBack in compliance
2020-01-27Public NoticePN Violation without NPDWR ViolationBack in compliance
2020-01-01GlyphosateMonitoring, RegularBack in compliance
2020-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
2020-01-01ChlordaneMonitoring, RegularBack in compliance
2020-01-01Ethylene DibromideMonitoring, RegularBack in compliance
2020-01-011, 2-Dibromo-3-ChloropropaneMonitoring, RegularBack in compliance
2020-01-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularBack in compliance
2020-01-01PentachlorophenolMonitoring, RegularBack in compliance
2020-01-01Benzo(a)pyreneMonitoring, RegularBack in compliance
2020-01-01HexachlorobenzeneMonitoring, RegularBack in compliance
2020-01-012, 4, 5-TpMonitoring, RegularBack in compliance
2020-01-012, 4-DMonitoring, RegularBack in compliance
2020-01-01Heptachlor epoxideMonitoring, RegularBack in compliance
2020-01-01HeptachlorMonitoring, RegularBack in compliance
2020-01-01LassoMonitoring, RegularBack in compliance
2020-01-01AtrazineMonitoring, RegularBack in compliance
2020-01-01CarbofuranMonitoring, RegularBack in compliance
2020-01-01HexachlorocyclopentadieneMonitoring, RegularBack in compliance
2020-01-01DinosebMonitoring, RegularBack in compliance
2020-01-01PicloramMonitoring, RegularBack in compliance
2020-01-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
2020-01-01SimazineMonitoring, RegularBack in compliance
2020-01-01OxamylMonitoring, RegularBack in compliance
2020-01-01Di(2-ethylhexyl) adipateMonitoring, RegularBack in compliance
2020-01-01EndothallMonitoring, RegularBack in compliance
2020-01-01DiquatMonitoring, RegularBack in compliance
2020-01-01DalaponMonitoring, RegularBack in compliance
2020-01-01ToxapheneMonitoring, RegularBack in compliance
2020-01-01MethoxychlorMonitoring, RegularBack in compliance
2020-01-01Bhc-GammaMonitoring, RegularBack in compliance
2020-01-01EndrinMonitoring, RegularBack in compliance
2020-01-01SeleniumMonitoring, RegularBack in compliance
2020-01-01Thallium, TotalMonitoring, RegularBack in compliance
2020-01-01Beryllium, TotalMonitoring, RegularBack in compliance
2020-01-01Antimony, TotalMonitoring, RegularBack in compliance
2020-01-01SodiumMonitoring, RegularBack in compliance
2020-01-01NickelMonitoring, RegularBack in compliance
2020-01-01MercuryMonitoring, RegularBack in compliance
2020-01-01ChromiumMonitoring, RegularBack in compliance
2020-01-01CadmiumMonitoring, RegularBack in compliance
2020-01-01BariumMonitoring, RegularBack in compliance
2020-01-01ArsenicMonitoring, RegularBack in compliance
2020-01-01Gross Alpha, Excl. Radon and U ×2Monitoring, RegularBack in compliance
2020-01-01Combined Uranium ×2Monitoring, RegularBack in compliance
2020-01-01Combined Radium (-226 and -228) ×2Monitoring, RegularBack in compliance
2020-01-01NitrateMonitoring, RegularBack in compliance
2020-01-01FluorideMonitoring, RegularBack in compliance
2020-01-01StyreneMonitoring, RegularBack in compliance
2020-01-01EthylbenzeneMonitoring, RegularBack in compliance
2020-01-01TolueneMonitoring, RegularBack in compliance
2020-01-01BenzeneMonitoring, RegularBack in compliance
2020-01-01ChlorobenzeneMonitoring, RegularBack in compliance
2020-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
2020-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
2020-01-01TrichloroethyleneMonitoring, RegularBack in compliance
2020-01-011,2-DichloropropaneMonitoring, RegularBack in compliance
2020-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
2020-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
2020-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
2020-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2020-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
2020-01-01Vinyl chlorideMonitoring, RegularBack in compliance
2020-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
2020-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
2020-01-01DichloromethaneMonitoring, RegularBack in compliance
2020-01-01Xylenes, TotalMonitoring, RegularBack in compliance
2020-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2020-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
2019-12-27Unknown contaminantRecord KeepingBack in compliance
2019-12-14Public NoticePN Violation without NPDWR ViolationBack in compliance
2019-11-01DBP Stage 1Treatment Technique No Certif. OperatorBack in compliance
2019-10-27Public NoticePN Violation without NPDWR ViolationBack in compliance
2019-07-27Public NoticePN Violation without NPDWR ViolationBack in compliance
2019-06-09Public NoticePN Violation for NPDWR ViolationBack in compliance
2019-05-02Revised Total Coliform RuleTTBack in compliance
2019-04-27Public NoticePN Violation without NPDWR ViolationBack in compliance
2019-01-27Public NoticePN Violation without NPDWR ViolationBack in compliance
2019-01-11Revised Total Coliform RuleOtherBack in compliance
2018-12-23E. ColiMonitoring, Source Water (GWR)Back in compliance
2018-11-01Revised Total Coliform RuleMONBack in compliance

System details

Population served	34
Service connections	30
Water source	Groundwater
System type	Community Water System
Owner	Private
Status	Active
City	Alamosa
EPA ZIP on file	81101

Areas served

Costilla County

Reading this record

Lake Sanchez Estates is a community water system that draws from groundwater and serves about 34 people in Alamosa, 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.