Community Water System · PWSID NY1400842

Big Tree Mobile Home Park

Serves 99 peopleGroundwaterOwner: PrivateWest Seneca, New York

Nothing open that measures the water, but 2 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 2011: 232 violations. 16 over the limit · 1 treatment lapse · 189 missed or late tests · 26 notices or reports. Most recent began 2024-03-01.

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

16Over the limit

1Treatment lapse

189Missed or late test

26Notice or report2 open

More violations on record than 99% of active water systems in New York. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

One square ≈ 13 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.

7% over the limit · 16<1% treatment lapse · 181% missed or late test · 18911% notice or report · 26

Across New York, 67% of violations are missed or late tests and 3% are water over a limit.

How far over the limit

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.

Open now (2)

2023-07-01Public NoticePN Violation for NPDWR ViolationOpen
2020-01-01Consumer Confidence RuleCCR Inadequate ReportingOpen

Every violation on record

2024-03-01Unknown contaminantOperations ReportBack in compliance
2024-02-01Unknown contaminantOperations ReportBack in compliance
2024-01-01Unknown contaminantOperations ReportBack in compliance
2023-12-01Unknown contaminantOperations ReportBack in compliance
2023-11-01Unknown contaminantOperations ReportBack in compliance
2023-10-01Unknown contaminantOperations ReportBack in compliance
2023-09-01Unknown contaminantOperations ReportBack in compliance
2023-08-01Unknown contaminantOperations ReportBack in compliance
2023-07-01Public NoticePN Violation for NPDWR ViolationOpen
2023-07-01IronMCL, Single Samplemeasured 0.8700 MG/L · limit 0.3000 MG/LPeriod ended · no return to compliance on file
2023-07-01Unknown contaminantOperations ReportBack in compliance
2023-06-01Unknown contaminantOperations ReportBack in compliance
2023-05-01Unknown contaminantOperations ReportBack in compliance
2023-04-012829Monitoring, RegularBack in compliance
2023-04-012828Monitoring, RegularBack in compliance
2023-04-012827Monitoring, RegularBack in compliance
2023-04-012826Monitoring, RegularBack in compliance
2023-04-012825Monitoring, RegularBack in compliance
2023-04-012824Monitoring, RegularBack in compliance
2023-04-012823Monitoring, RegularBack in compliance
2023-04-012822Monitoring, RegularBack in compliance
2023-04-012821Monitoring, RegularBack in compliance
2023-04-012820Monitoring, RegularBack in compliance
2023-04-012819Monitoring, RegularBack in compliance
2023-04-012816Monitoring, RegularBack in compliance

Show the other 169 entries

2023-04-012815Monitoring, RegularBack in compliance
2023-04-012814Monitoring, RegularBack in compliance
2023-04-012813Monitoring, RegularBack in compliance
2023-04-012812Monitoring, RegularBack in compliance
2023-04-012809Monitoring, RegularBack in compliance
2023-04-012808Monitoring, RegularBack in compliance
2023-04-012807Monitoring, RegularBack in compliance
2023-04-012806Monitoring, RegularBack in compliance
2023-04-012805Monitoring, RegularBack in compliance
2023-04-012804Monitoring, RegularBack in compliance
2023-04-012803Monitoring, RegularBack in compliance
2023-04-012802Monitoring, RegularBack in compliance
2023-04-012801Monitoring, RegularBack in compliance
2023-04-01ManganeseMonitoring, RegularBack in compliance
2023-04-01IronMonitoring, RegularBack in compliance
2023-01-01IronMCL, Single Samplemeasured 0.7900 MG/L · limit 0.3000 MG/LBack in compliance
2022-11-01Unknown contaminantOperations ReportBack in compliance
2022-10-01IronMCL, Single Samplemeasured 0.9100 MG/L · limit 0.3000 MG/LBack in compliance
2022-08-01Unknown contaminantOperations ReportBack in compliance
2022-08-01Groundwater RuleTreatment Technique (SWTR and GWR)Back in compliance
2022-07-01IronMCL, Single Samplemeasured 0.7900 MG/L · limit 0.3000 MG/LBack in compliance
2022-04-01IronMCL, Single Samplemeasured 0.9700 MG/L · limit 0.3000 MG/LBack in compliance
2022-01-01IronMCL, Single Samplemeasured 1.40 MG/L · limit 0.3000 MG/LBack in compliance
2021-10-01ManganeseMCL, Single Samplemeasured 960.00 UG/L · limit 500.00 UG/LBack in compliance
2021-10-01IronMCL, Single Samplemeasured 830.00 UG/L · limit 300.00 UG/LBack in compliance
2021-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
2021-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
2021-07-01ManganeseMCL, Single Samplemeasured 979.00 UG/L · limit 500.00 UG/LBack in compliance
2021-07-01IronMCL, Single Samplemeasured 850.00 UG/L · limit 300.00 UG/LBack in compliance
2021-05-01Revised Total Coliform RuleMONBack in compliance
2021-04-01Revised Total Coliform RuleMONBack in compliance
2021-04-01ManganeseMCL, Single Samplemeasured 882.00 UG/LBack in compliance
2021-04-01IronMCL, Single Samplemeasured 760.00 UG/LBack in compliance
2021-02-01Revised Total Coliform RuleMONBack in compliance
2021-02-01Unknown contaminantOperations ReportBack in compliance
2021-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
2021-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
2021-01-01ManganeseMCL, Single Samplemeasured 882.00 UG/L · limit 500.00 UG/LBack in compliance
2021-01-01IronMCL, Single Samplemeasured 760.00 UG/L · limit 300.00 UG/LBack in compliance
2021-01-01Unknown contaminantOperations ReportBack in compliance
2020-12-01Unknown contaminantOperations ReportPeriod ended · no return to compliance on file
2020-10-01IronMCL, Single Samplemeasured 0.7350 MG/L · limit 0.3000 MG/LBack in compliance
2020-09-01Unknown contaminantOperations ReportBack in compliance
2020-07-01sec-ButylbenzeneMonitoring, RegularBack in compliance
2020-07-01n-PropylbenzeneMonitoring, RegularBack in compliance
2020-07-01o-XyleneMonitoring, RegularBack in compliance
2020-07-01StyreneMonitoring, RegularBack in compliance
2020-07-01m-XyleneMonitoring, RegularBack in compliance
2020-07-01IsopropylbenzeneMonitoring, RegularBack in compliance
2020-07-01BromobenzeneMonitoring, RegularBack in compliance
2020-07-01EthylbenzeneMonitoring, RegularBack in compliance
2020-07-01TolueneMonitoring, RegularBack in compliance
2020-07-01BenzeneMonitoring, RegularBack in compliance
2020-07-01ChlorobenzeneMonitoring, RegularBack in compliance
2020-07-011,1,2,2-TetrachloroethaneMonitoring, RegularBack in compliance
2020-07-01TetrachloroethyleneMonitoring, RegularBack in compliance
2020-07-011,1,1,2-TetrachloroethaneMonitoring, RegularBack in compliance
2020-07-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
2020-07-01TrichloroethyleneMonitoring, RegularBack in compliance
2020-07-011,2-DichloropropaneMonitoring, RegularBack in compliance
2020-07-01Carbon tetrachlorideMonitoring, RegularBack in compliance
2020-07-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
2020-07-011,2-DichloroethaneMonitoring, RegularBack in compliance
2020-07-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2020-07-011,1-DichloroethaneMonitoring, RegularBack in compliance
2020-07-011,1-DichloroethyleneMonitoring, RegularBack in compliance
2020-07-01Vinyl chlorideMonitoring, RegularBack in compliance
2020-07-01p-DichlorobenzeneMonitoring, RegularBack in compliance
2020-07-01o-DichlorobenzeneMonitoring, RegularBack in compliance
2020-07-01m-DichlorobenzeneMonitoring, RegularBack in compliance
2020-07-01p-ChlorotolueneMonitoring, RegularBack in compliance
2020-07-01o-ChlorotolueneMonitoring, RegularBack in compliance
2020-07-01DichloromethaneMonitoring, RegularBack in compliance
2020-07-01p-XyleneMonitoring, RegularBack in compliance
2020-07-01BromochloromethaneMonitoring, RegularBack in compliance
2020-07-01tert-ButylbenzeneMonitoring, RegularBack in compliance
2020-07-011,3,5-TrimethylbenzeneMonitoring, RegularBack in compliance
2020-07-01n-ButylbenzeneMonitoring, RegularBack in compliance
2020-07-011,2,3-TrichlorobenzeneMonitoring, RegularBack in compliance
2020-07-011,2,4-TrimethylbenzeneMonitoring, RegularBack in compliance
2020-07-012,2-DichloropropaneMonitoring, RegularBack in compliance
2020-07-011,2,3-TrichloropropaneMonitoring, RegularBack in compliance
2020-07-011,3-DichloropropaneMonitoring, RegularBack in compliance
2020-07-011,1-DichloropropeneMonitoring, RegularBack in compliance
2020-07-01DibromomethaneMonitoring, RegularBack in compliance
2020-07-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
2020-07-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
2020-07-01Methyl Tert-Butyl EtherMonitoring, RegularBack in compliance
2020-07-01HexachlorobutadieneMonitoring, RegularBack in compliance
2020-07-01cis-1,3-DichloropropeneMonitoring, RegularBack in compliance
2020-07-01trans-1,3-DichloropropeneMonitoring, RegularBack in compliance
2020-07-01TrichlorofluoromethaneMonitoring, RegularBack in compliance
2020-07-01ChloroethaneMonitoring, RegularBack in compliance
2020-07-01BromomethaneMonitoring, RegularBack in compliance
2020-07-01DichlorodifluoromethaneMonitoring, RegularBack in compliance
2020-07-01ChloromethaneMonitoring, RegularBack in compliance
2020-07-01p-IsopropyltolueneMonitoring, RegularBack in compliance
2020-07-01IronMCL, Single Samplemeasured 0.7750 MG/LBack in compliance
2020-06-01Revised Total Coliform RuleMONBack in compliance
2020-04-01Revised Total Coliform RuleMONBack in compliance
2020-04-01ManganeseMonitoring, RegularPeriod ended · no return to compliance on file
2020-04-01IronMonitoring, RegularPeriod ended · no return to compliance on file
2020-04-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
2020-04-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
2020-03-01Revised Total Coliform RuleMONBack in compliance
2020-03-01Unknown contaminantOperations ReportPeriod ended · no return to compliance on file
2020-01-01Consumer Confidence RuleCCR Inadequate ReportingOpen
2020-01-01Propachlor ×2Monitoring, RegularBack in compliance
2020-01-01Butachlor ×2Monitoring, RegularBack in compliance
2020-01-01Dieldrin ×2Monitoring, RegularBack in compliance
2020-01-01Heptachlor epoxide ×2Monitoring, RegularBack in compliance
2020-01-013-Hydroxycarbofuran ×2Monitoring, RegularBack in compliance
2020-01-01Heptachlor ×2Monitoring, RegularBack in compliance
2020-01-01Lasso ×2Monitoring, RegularBack in compliance
2020-01-01Atrazine ×2Monitoring, RegularBack in compliance
2020-01-01Aldicarb ×2Monitoring, RegularBack in compliance
2020-01-01Carbofuran ×2Monitoring, RegularBack in compliance
2020-01-01Metolachlor ×2Monitoring, RegularBack in compliance
2020-01-01Aldicarb sulfone ×2Monitoring, RegularBack in compliance
2020-01-01Aldicarb sulfoxide ×2Monitoring, RegularBack in compliance
2020-01-01Hexachlorocyclopentadiene ×2Monitoring, RegularBack in compliance
2020-01-01Dinoseb ×2Monitoring, RegularBack in compliance
2020-01-01Picloram ×2Monitoring, RegularBack in compliance
2020-01-01Di(2-ethylhexyl) phthalate ×2Monitoring, RegularBack in compliance
2020-01-01Simazine ×2Monitoring, RegularBack in compliance
2020-01-01Oxamyl ×2Monitoring, RegularBack in compliance
2020-01-01Di(2-ethylhexyl) adipate ×2Monitoring, RegularBack in compliance
2020-01-01Dalapon ×2Monitoring, RegularBack in compliance
2020-01-01Methomyl ×2Monitoring, RegularBack in compliance
2020-01-01Carbaryl ×2Monitoring, RegularBack in compliance
2020-01-01Toxaphene ×2Monitoring, RegularBack in compliance
2020-01-01Methoxychlor ×2Monitoring, RegularBack in compliance
2020-01-01Bhc-Gamma ×2Monitoring, RegularBack in compliance
2020-01-01Endrin ×2Monitoring, RegularBack in compliance
2020-01-01Chlordane ×2Monitoring, RegularBack in compliance
2020-01-01Ethylene Dibromide ×2Monitoring, RegularBack in compliance
2020-01-01Metribuzin ×2Monitoring, RegularBack in compliance
2020-01-01Dicamba ×2Monitoring, RegularBack in compliance
2020-01-01Total Polychlorinated Biphenyls (PCB) ×2Monitoring, RegularBack in compliance
2020-01-01Aldrin ×2Monitoring, RegularBack in compliance
2020-01-01Pentachlorophenol ×2Monitoring, RegularBack in compliance
2020-01-01Benzo(a)pyrene ×2Monitoring, RegularBack in compliance
2020-01-01Hexachlorobenzene ×2Monitoring, RegularBack in compliance
2020-01-012, 4, 5-Tp ×2Monitoring, RegularBack in compliance
2020-01-012, 4-D ×2Monitoring, RegularBack in compliance
2020-01-01ManganeseMonitoring, RegularBack in compliance
2020-01-01IronMonitoring, RegularBack in compliance
2020-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
2020-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
2020-01-01Revised Total Coliform RuleMONBack in compliance
2019-12-01Revised Total Coliform RuleMONBack in compliance
2019-11-01Unknown contaminantOperations ReportPeriod ended · no return to compliance on file
2019-11-01Revised Total Coliform RuleMONBack in compliance
2019-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
2019-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
2019-10-01Revised Total Coliform RuleMONBack in compliance
2019-09-01Revised Total Coliform RuleMONBack in compliance
2019-08-01Revised Total Coliform RuleMONBack in compliance
2019-08-01Unknown contaminantNotification, StatePeriod ended · no return to compliance on file
2019-05-01Unknown contaminantOperations ReportBack in compliance
2019-04-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
2019-01-01IronMonitoring, RegularPeriod ended · no return to compliance on file
2018-06-01Revised Total Coliform RuleMONBack in compliance
2018-05-01Revised Total Coliform RuleMONBack in compliance
2018-04-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
2018-04-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
2017-01-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
2014-09-02Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
2011-01-01AsbestosMonitoring, RegularPeriod ended · no return to compliance on file

System details

Population served	99
Service connections	32
Water source	Groundwater
System type	Community Water System
Owner	Private
Status	Active
City	West Seneca
EPA ZIP on file	14224

Areas served

Erie County

Reading this record

Big Tree Mobile Home Park is a community water system that draws from groundwater and serves about 99 people in West Seneca, New York. 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.