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Product Safety9,700+ CPSC product recalls Food Safety28,600+ FDA food recalls Pet Safety1.3M FDA animal adverse events Drug Safety17,500+ FDA drug recalls Device Safety38,400+ FDA device recalls Workplace Safety102,900+ OSHA injury reports Brand HistoryRecall lookup by company

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Round Rock NTUA

Arizona — Community Water System — PWSID: NN0403023

System Information

PWSIDNN0403023
System NameRound Rock NTUA
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeNative American
EPA Region09
Serves SchoolNo
WholesalerNo
First ReportedFeb 2, 1984
Last ReportedDec 31, 2025

Location & Contact

StateArizona
CityFt Defiance
ZIP Code86504
AddressOffice of Deputy General Manager
OrganizationNavajo Tribal Utility Authority
Phone9287296277

Population & Service

Population Served876
Service Connections256

Drinking Water Violations (61)

This water system has 61 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, 2020 Dec 31, 2020 MR No Yes — 0.080 mg/L — Resolved Dec 31, 2020 —
Jan 1, 2020 Dec 31, 2020 MR No Yes — 0.080 mg/L — Resolved Dec 31, 2020 —
Jan 1, 2020 Dec 31, 2020 MR No Yes — 0.080 mg/L — Resolved Dec 31, 2020 —
Jan 1, 2020 Dec 31, 2020 MR No Yes — 0.060 mg/L — Resolved Dec 31, 2020 —
Jan 1, 2020 Dec 31, 2020 MR No Yes — 0.060 mg/L — Resolved Dec 31, 2020 —
Jan 1, 2020 Dec 31, 2020 MR No Yes — 0.060 mg/L — Resolved Dec 31, 2020 —
Apr 1, 2016 — Other No No — — — Resolved Feb 10, 2025 —
Apr 1, 2016 — Other No No — — — Resolved Feb 10, 2025 —
Oct 1, 2013 — MR No Yes — — — Resolved Mar 22, 2022 —
Oct 1, 2013 — MR No Yes — — — Resolved Mar 22, 2022 —
Oct 1, 2013 — MR No Yes — — — Resolved Mar 22, 2022 —
Jul 1, 2013 Sep 30, 2013 MCL Yes No 5.325 PCI/L 5 pCi/L — Resolved Sep 30, 2013 —
Jul 1, 2013 Sep 30, 2013 MCL Yes No 5.325 PCI/L 5 pCi/L — Resolved Sep 30, 2013 —
Jul 1, 2013 Sep 30, 2013 MCL Yes No 5.325 PCI/L 5 pCi/L — Resolved Sep 30, 2013 —
Jul 1, 2013 Sep 30, 2013 MCL Yes No 5.325 PCI/L 5 pCi/L — Resolved Sep 30, 2013 —
Apr 1, 2013 Jun 30, 2013 MCL Yes No 5.5 PCI/L 5 pCi/L — Resolved Jun 30, 2013 —
Apr 1, 2013 Jun 30, 2013 MCL Yes No 5.5 PCI/L 5 pCi/L — Resolved Jun 30, 2013 —
Apr 1, 2013 Jun 30, 2013 MCL Yes No 5.5 PCI/L 5 pCi/L — Resolved Jun 30, 2013 —
Jan 1, 2013 Mar 31, 2013 MCL Yes No 6.075 PCI/L 5 pCi/L — Resolved Feb 28, 2013 —
Dec 1, 2012 Dec 31, 2012 MR No No — 5% of samples — Resolved Dec 31, 2012 —
Dec 1, 2012 Dec 31, 2012 MR No No — 5% of samples — Resolved Dec 31, 2012 —
Nov 1, 2012 Nov 30, 2012 MR No No — 5% of samples — Resolved Nov 30, 2012 —
Oct 1, 2012 Dec 31, 2012 MCL Yes No 6.075 PCI/L 5 pCi/L — Resolved Dec 31, 2012 —
Oct 1, 2012 Dec 31, 2012 MCL Yes No 6.075 PCI/L 5 pCi/L — Resolved Dec 31, 2012 —
Oct 1, 2012 Dec 31, 2012 MCL Yes No 6.075 PCI/L 5 pCi/L — Resolved Dec 31, 2012 —
Oct 1, 2012 Dec 31, 2012 MCL Yes No 6.075 PCI/L 5 pCi/L — Resolved Dec 31, 2012 —
Jul 1, 2012 Sep 30, 2012 MCL Yes No 5.46667 PCI/L 5 pCi/L — Resolved Sep 30, 2012 —
Jul 1, 2012 Sep 30, 2012 MCL Yes No 5.46667 PCI/L 5 pCi/L — Resolved Sep 30, 2012 —
Jul 1, 2012 Sep 30, 2012 MCL Yes No 5.46667 PCI/L 5 pCi/L — Resolved Sep 30, 2012 —
Jul 1, 2012 Sep 30, 2012 MCL Yes No 5.46667 PCI/L 5 pCi/L — Resolved Sep 30, 2012 —
Jul 1, 2012 Sep 30, 2012 MCL Yes No 5.46667 PCI/L 5 pCi/L — Resolved Sep 30, 2012 —
Apr 1, 2012 Jun 30, 2012 MCL Yes No 5.46667 PCI/L 5 pCi/L — Resolved Jun 30, 2012 —
Apr 1, 2012 Jun 30, 2012 MCL Yes No 5.46667 PCI/L 5 pCi/L — Resolved Jun 30, 2012 —
Apr 1, 2012 Jun 30, 2012 MCL Yes No 5.46667 PCI/L 5 pCi/L — Resolved Jun 30, 2012 —
Apr 1, 2012 Jun 30, 2012 MCL Yes No 5.46667 PCI/L 5 pCi/L — Resolved Jun 30, 2012 —
Apr 1, 2012 Jun 30, 2012 MCL Yes No 5.46667 PCI/L 5 pCi/L — Resolved Jun 30, 2012 —
Jan 1, 2012 Mar 31, 2012 MCL Yes No 5.46667 PCI/L 5 pCi/L — Resolved Feb 22, 2012 —
Oct 1, 2010 Dec 31, 2010 MCL Yes No 5.1 PCI/L 5 pCi/L — Resolved Dec 31, 2010 —
Jan 1, 2010 Dec 31, 2010 MR No Yes — 1 mg/L — Resolved Dec 31, 2010 —
Jan 1, 2010 Dec 31, 2010 MR No Yes — 10 mg/L — Resolved Dec 31, 2010 —
Jan 1, 2010 Dec 31, 2010 MR No Yes — 10 mg/L — Resolved Dec 31, 2010 —
Jan 1, 2010 Dec 31, 2010 MR No Yes — 10 mg/L — Resolved Dec 31, 2010 —
Aug 1, 2007 Aug 31, 2007 MCL Yes No — 5% of samples — Resolved Aug 31, 2007 —
Aug 1, 2007 Aug 31, 2007 MCL Yes No — 5% of samples — Resolved Aug 31, 2007 —
Jan 1, 2004 Dec 31, 2004 MR No No — 15 pCi/L — Resolved Dec 31, 2004 —
Jun 1, 2002 Jun 30, 2002 MR No No — 5% of samples — Resolved Jun 30, 2002 —
Jun 1, 2002 Jun 30, 2002 MR No No — 5% of samples — Archived Jun 30, 2002 —
May 1, 2002 May 31, 2002 MR No No — 5% of samples — Archived May 31, 2002 —
May 1, 2002 May 31, 2002 MR No No — 5% of samples — Resolved May 31, 2002 —
Apr 1, 2002 Apr 30, 2002 MR No No — 5% of samples — Archived Apr 30, 2002 —

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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