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Leupp Contract Boarding School BIA

Arizona — Community Water System — PWSID: NN0433009

System Information

PWSIDNN0433009
System NameLeupp Contract Boarding School BIA
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeFederal
EPA Region09
Serves SchoolYes
WholesalerNo
First ReportedFeb 2, 1984
Last ReportedDec 31, 2025

Location & Contact

StateArizona
CityWinslow
ZIP Code86035
AddressHC 61 Box D
OrganizationBIA Leupp Schools, Inc.
Phone9286866211

Population & Service

Population Served250
Service Connections10

Drinking Water Violations (87)

This water system has 87 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Feb 1, 2025 Feb 28, 2025 Revised Total Coliform Rule MON No Yes — — — Resolved Feb 28, 2025 Revised Total Coliform Rule
Jan 1, 2024 Dec 31, 2024 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2024 Nitrate Rule
Jan 1, 2024 Dec 31, 2024 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2024 Nitrate Rule
Jan 1, 2024 Dec 31, 2024 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2024 Nitrate Rule
Jan 1, 2024 — Revised Total Coliform Rule RPT No No — — — Resolved Feb 20, 2024 Revised Total Coliform Rule
Jan 1, 2024 Dec 31, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2024 Nitrate Rule
Jan 1, 2024 Dec 31, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2024 Nitrate Rule
Jan 1, 2024 Dec 31, 2024 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2024 Nitrate Rule
Oct 1, 2023 — Revised Total Coliform Rule RPT No No — — — Resolved Nov 30, 2023 Revised Total Coliform Rule
Oct 1, 2022 — Revised Total Coliform Rule RPT No No — — — Resolved Nov 17, 2022 Revised Total Coliform Rule
May 1, 2020 — Revised Total Coliform Rule RPT No No — — — Resolved Jun 19, 2020 Revised Total Coliform Rule
May 1, 2013 May 31, 2013 Coliform (TCR) MR No No — 5% of samples — Resolved May 31, 2013 Total Coliform Rule
Dec 1, 2012 Dec 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2012 Total Coliform Rule
Dec 1, 2012 Dec 31, 2012 Coliform (TCR) MR No No — 5% of samples — Resolved Dec 31, 2012 Total Coliform Rule
Apr 1, 2012 Jun 30, 2012 Combined Radium (-226 and -228) MCL Yes No 6.758 PCI/L 5 pCi/L — Resolved Jun 30, 2012 Radionuclides and Revised Rad Rule
Apr 1, 2012 Jun 30, 2012 Combined Radium (-226 and -228) MCL Yes No 6.758 PCI/L 5 pCi/L — Resolved Jun 30, 2012 Radionuclides and Revised Rad Rule
Jan 1, 2012 Mar 31, 2012 Combined Radium (-226 and -228) MCL Yes No 6.758 PCI/L 5 pCi/L — Resolved Mar 31, 2012 Radionuclides and Revised Rad Rule
Jan 1, 2012 Mar 31, 2012 Combined Radium (-226 and -228) MCL Yes No 6.758 PCI/L 5 pCi/L — Resolved Mar 31, 2012 Radionuclides and Revised Rad Rule
Oct 1, 2010 Dec 31, 2010 Benzo(a)pyrene MCL Yes No .00028 MG/L 0.0002 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Oct 1, 2010 Dec 31, 2010 Benzo(a)pyrene MCL Yes No .00028 MG/L 0.0002 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Oct 1, 2010 Dec 31, 2010 Combined Radium (-226 and -228) MCL Yes No 6.358 PCI/L 5 pCi/L — Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Oct 1, 2010 Dec 31, 2010 Combined Radium (-226 and -228) MCL Yes No 6.358 PCI/L 5 pCi/L — Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Oct 1, 2010 Dec 31, 2010 Gross Alpha, Excl. Radon and U MCL Yes No 37.79 PCI/L 15 pCi/L — Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Oct 1, 2010 Dec 31, 2010 Benzo(a)pyrene MCL Yes No .00028 MG/L 0.0002 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Oct 1, 2010 Dec 31, 2010 Gross Alpha, Excl. Radon and U MCL Yes No 37.79 PCI/L 15 pCi/L — Resolved Dec 31, 2010 Radionuclides and Revised Rad Rule
Nov 1, 2008 Nov 30, 2008 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Nov 30, 2008 Total Coliform Rule
Nov 1, 2008 Nov 30, 2008 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Nov 30, 2008 Total Coliform Rule
Jan 1, 2008 Dec 31, 2010 2,3,7,8-TCDD MR No Yes — 0.00000003 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 2,3,7,8-TCDD MR No Yes — 0.00000003 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 2,3,7,8-TCDD MR No Yes — 0.00000003 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jan 1, 2008 Dec 31, 2010 2,3,7,8-TCDD MR No Yes — 0.00000003 mg/L — Resolved Dec 31, 2010 Synthetic Organic Chemicals
Jul 1, 2006 — Consumer Confidence Rule Other No No — — — Resolved Mar 9, 2007 Consumer Confidence Rule
Jul 1, 2006 — Consumer Confidence Rule Other No No — — — Resolved Mar 9, 2007 Consumer Confidence Rule
Jul 1, 2005 — Consumer Confidence Rule Other No No — — — Resolved Mar 9, 2007 Consumer Confidence Rule
Jul 1, 2005 — Consumer Confidence Rule Other No No — — — Resolved Mar 9, 2007 Consumer Confidence Rule
Jan 1, 2005 Dec 31, 2007 2,4,5-TP MR No Yes — 0.05 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Simazine MR No Yes — 0.004 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Endrin MR No Yes — 0.002 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 OXAMYL MR No Yes — 0.2 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Glyphosate MR No Yes — 0.7 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Aldicarb MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Chlordane MR No Yes — 0.002 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Endothall MR No Yes — 0.1 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Aldicarb sulfone MR No Yes — — — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Diquat MR No Yes — 0.02 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Picloram MR No Yes — 0.5 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Toxaphene MR No Yes — 0.003 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals
Jan 1, 2005 Dec 31, 2007 Dinoseb MR No Yes — 0.007 mg/L — Resolved Dec 31, 2007 Synthetic Organic Chemicals

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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