Vehicle Safety
Recalls Search 320,000+ NHTSA safety recalls Complaints 2.1M+ consumer safety complaints TSBs 4.7M technical service bulletins VIN Lookup Decode any vehicle VIN instantly OBD Codes 12,000+ diagnostic trouble codes Fuel Economy EPA MPG data for all vehicles Safety Ratings 11,700+ NHTSA crash test ratings Investigations 5,300+ NHTSA defect investigations Statistics Recall trends & safety analysis
Consumer Safety
Product Safety 9,700+ CPSC product recalls Food Safety 28,600+ FDA food recalls Pet Safety 1.3M FDA animal adverse events Drug Safety 17,500+ FDA drug recalls Device Safety 38,400+ FDA device recalls Workplace Safety 102,900+ OSHA injury reports Brand History Cross-category recall lookup by company
Infrastructure
Bridge Safety 624,000 bridge inspections Aviation Safety 30,000+ NTSB aviation events Dam Safety 92,600 dam safety records Water Safety 433,000+ public water systems Railroad Safety 438,000+ rail crossings Pipeline Safety 8,800+ pipeline incidents
Public Health
Nursing Homes 14,700 CMS rated facilities Environmental 80,000+ hazardous sites & releases

Shonto Preparatory Boarding School BIA

Arizona — Community Water System — PWSID: NN0433016

System Information

PWSIDNN0433016
System NameShonto Preparatory 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
CityShonto
ZIP Code86054
Address—
OrganizationBIA Shonto Preparatory School
Phone9286723500

Population & Service

Population Served664
Service Connections166

Drinking Water Violations (106)

This water system has 106 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
Jan 1, 2024 — Revised Total Coliform Rule RPT No No — — — Resolved Feb 20, 2024 Revised Total Coliform 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
Feb 1, 2018 — E. COLI MR No Yes — — — Resolved Feb 12, 2018 Ground Water Rule
Feb 1, 2018 — E. COLI MR No Yes — — — Resolved Feb 12, 2018 Ground Water Rule
Apr 1, 2016 — Revised Total Coliform Rule Other No No — — — Resolved Dec 20, 2017 Revised Total Coliform Rule
Apr 1, 2016 — Revised Total Coliform Rule Other No No — — — Resolved Dec 20, 2017 Revised Total Coliform Rule
Apr 1, 2016 — Revised Total Coliform Rule Other No No — — — Resolved Dec 20, 2017 Revised Total Coliform Rule
Nov 1, 2014 Nov 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2014 Total Coliform Rule
Nov 1, 2014 Nov 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2014 Total Coliform Rule
Nov 1, 2014 Nov 30, 2014 Coliform (TCR) MR No No — 5% of samples — Resolved Nov 30, 2014 Total Coliform Rule
Oct 1, 2013 — Stage 2 Disinfectants and Disinfection Byproducts Rule MR No Yes — — — Resolved Dec 20, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2013 — Stage 2 Disinfectants and Disinfection Byproducts Rule MR No Yes — — — Resolved Dec 20, 2017 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2013 — Stage 2 Disinfectants and Disinfection Byproducts Rule MR No Yes — — — Resolved Dec 20, 2017 Stage 2 Disinfectants and Disinfection Byproducts 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
Jan 1, 2010 Dec 31, 2010 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2010 Dec 31, 2010 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2008 Dec 31, 2010 Barium MR No Yes — 2 mg/L — Resolved Dec 31, 2010 Inorganic Chemicals
Jan 1, 2008 Dec 31, 2010 Antimony, Total MR No Yes — 0.006 mg/L — Resolved Dec 31, 2010 Inorganic Chemicals
Jan 1, 2008 Dec 31, 2010 CYANIDE MR No Yes — 0.2 mg/L — Resolved Dec 31, 2010 Inorganic Chemicals
Jan 1, 2008 Dec 31, 2010 Beryllium, Total MR No Yes — 0.004 mg/L — Resolved Dec 31, 2010 Inorganic Chemicals
Jan 1, 2008 Dec 31, 2010 Chromium MR No Yes — 0.1 mg/L — Resolved Dec 31, 2010 Inorganic Chemicals
Jan 1, 2008 Dec 31, 2010 Mercury MR No Yes — 0.002 mg/L — Resolved Dec 31, 2010 Inorganic Chemicals
Jan 1, 2008 Dec 31, 2010 Arsenic MR No Yes — 0.010 mg/L — Resolved Dec 31, 2010 Arsenic Rule
Jan 1, 2008 Dec 31, 2010 Cadmium MR No Yes — 0.005 mg/L — Resolved Dec 31, 2010 Inorganic Chemicals
Jan 1, 2008 Dec 31, 2010 Fluoride MR No Yes — 4.0 mg/L — Resolved Dec 31, 2010 Inorganic Chemicals
Jan 1, 2008 Dec 31, 2010 Selenium MR No Yes — 0.05 mg/L — Resolved Dec 31, 2010 Inorganic Chemicals
Jan 1, 2008 Dec 31, 2010 Thallium, Total MR No Yes — 0.002 mg/L — Resolved Dec 31, 2010 Inorganic 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
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, 2004 Dec 31, 2004 Ethylbenzene MR No No — 0.7 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 2,4,5-TP MR No No — 0.05 mg/L — Resolved Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,1,1-Trichloroethane MR No No — 0.2 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Aldicarb sulfone MR No No — — — Resolved Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Aldicarb sulfoxide MR No No — — — Resolved Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Hexachlorocyclopentadiene MR No No — 0.05 mg/L — Resolved Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Di(2-ethylhexyl) phthalate MR No No — 0.006 mg/L — Resolved Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 OXAMYL MR No No — 0.2 mg/L — Resolved Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Di(2-ethylhexyl) adipate MR No No — 0.4 mg/L — Resolved Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Dalapon MR No No — 0.2 mg/L — Resolved Dec 31, 2004 Synthetic Organic Chemicals
Jan 1, 2004 Dec 31, 2004 1,2,4-Trichlorobenzene MR No No — 0.07 mg/L — Resolved Dec 31, 2004 Volatile Organic Chemicals
Jan 1, 2004 Dec 31, 2004 Toxaphene MR No No — 0.003 mg/L — Resolved Dec 31, 2004 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.

Browse All Water Systems Water Safety Stats Water Safety Home
Browse All Water Systems Water Systems in Arizona