MARICOPA MOUNTAIN DWID 1

Arizona — Community Water System — PWSID: AZ0411087

System Information

PWSID	AZ0411087
System Name	MARICOPA MOUNTAIN DWID 1
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Private
EPA Region	09
Serves School	No
Wholesaler	No
First Reported	Jan 22, 1982
Last Reported	Nov 17, 2025

Location & Contact

State	Arizona
City	MARICOPA
ZIP Code	85139
Address	727 N AMARILLO VALLEY RD
Organization	CRISWELL, NANCY A
Phone	520-424-9646

Population & Service

Population Served	450
Service Connections	3

Drinking Water Violations (447)

This water system has 447 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
Jul 1, 2025	Sep 30, 2025	Nitrate	MCL	Yes	No	21 MG/L	10 mg/L	10	Archived	Sep 30, 2025	Nitrate Rule
Jul 1, 2025	Sep 30, 2025	Nitrate	MCL	Yes	No	21 MG/L	10 mg/L	10	Archived	Sep 30, 2025	Nitrate Rule
Jul 1, 2025	Sep 30, 2025	Nitrate	MCL	Yes	No	21 MG/L	10 mg/L	10	Archived	Sep 30, 2025	Nitrate Rule
Apr 1, 2025	—	Public Notice	Other	No	No	—	—	—	Resolved	May 19, 2025	Public Notice Rule and Revised PN Rule
Apr 1, 2025	Jun 30, 2025	Nitrate	MCL	Yes	No	23 MG/L	10 mg/L	10	Archived	Jun 30, 2025	Nitrate Rule
Apr 1, 2025	—	Public Notice	Other	No	No	—	—	—	Resolved	May 19, 2025	Public Notice Rule and Revised PN Rule
Apr 1, 2025	Jun 30, 2025	Nitrate	MCL	Yes	No	23 MG/L	10 mg/L	10	Archived	Jun 30, 2025	Nitrate Rule
Apr 1, 2025	Jun 30, 2025	Nitrate	MCL	Yes	No	23 MG/L	10 mg/L	10	Archived	Jun 30, 2025	Nitrate Rule
Jan 1, 2025	Mar 31, 2025	Nitrate	MCL	Yes	No	16 MG/L	10 mg/L	10	Archived	Mar 31, 2025	Nitrate Rule
Jan 1, 2025	Mar 31, 2025	Nitrate	MCL	Yes	No	16 MG/L	10 mg/L	10	Archived	Mar 31, 2025	Nitrate Rule
Jan 1, 2025	Mar 31, 2025	Nitrate	MCL	Yes	No	16 MG/L	10 mg/L	10	Archived	Mar 31, 2025	Nitrate Rule
Jan 1, 2025	Mar 31, 2025	Nitrate	MCL	Yes	No	16 MG/L	10 mg/L	10	Archived	Mar 31, 2025	Nitrate Rule
Oct 1, 2024	Dec 31, 2024	Nitrate	MCL	Yes	No	17 MG/L	10 mg/L	10	Archived	Dec 31, 2024	Nitrate Rule
Oct 1, 2024	Dec 31, 2024	Nitrate	MCL	Yes	No	17 MG/L	10 mg/L	10	Archived	Dec 31, 2024	Nitrate Rule
Oct 1, 2024	Dec 31, 2024	Nitrate	MCL	Yes	No	17 MG/L	10 mg/L	10	Archived	Dec 31, 2024	Nitrate Rule
Oct 1, 2024	Dec 31, 2024	Nitrate	MCL	Yes	No	17 MG/L	10 mg/L	10	Archived	Dec 31, 2024	Nitrate Rule
Jul 1, 2024	Sep 30, 2024	Nitrate	MCL	Yes	No	19 MG/L	10 mg/L	10	Archived	Sep 30, 2024	Nitrate Rule
Jul 1, 2024	Sep 30, 2024	Nitrate	MCL	Yes	No	19 MG/L	10 mg/L	10	Archived	Sep 30, 2024	Nitrate Rule
Jul 1, 2024	Sep 30, 2024	Nitrate	MCL	Yes	No	19 MG/L	10 mg/L	10	Archived	Sep 30, 2024	Nitrate Rule
Apr 1, 2024	Jun 30, 2024	Nitrate	MCL	Yes	No	16 MG/L	10 mg/L	10	Archived	Jun 30, 2024	Nitrate Rule
Apr 1, 2024	Jun 30, 2024	Nitrate	MCL	Yes	No	16 MG/L	10 mg/L	10	Archived	Jun 30, 2024	Nitrate Rule
Apr 1, 2024	Jun 30, 2024	Nitrate	MCL	Yes	No	16 MG/L	10 mg/L	10	Archived	Jun 30, 2024	Nitrate Rule
Apr 1, 2024	Jun 30, 2024	Nitrate	MCL	Yes	No	16 MG/L	10 mg/L	10	Archived	Jun 30, 2024	Nitrate Rule
Jan 1, 2024	Mar 31, 2024	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Mar 31, 2024	Nitrate Rule
Jan 1, 2024	Mar 31, 2024	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Mar 31, 2024	Nitrate Rule
Jan 1, 2024	Mar 31, 2024	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Mar 31, 2024	Nitrate Rule
Jan 1, 2024	Mar 31, 2024	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Mar 31, 2024	Nitrate Rule
Oct 1, 2023	Dec 31, 2023	Nitrate	MCL	Yes	No	13 MG/L	10 mg/L	10	Archived	Dec 31, 2023	Nitrate Rule
Oct 1, 2023	Dec 31, 2023	Nitrate	MCL	Yes	No	13 MG/L	10 mg/L	10	Archived	Dec 31, 2023	Nitrate Rule
Oct 1, 2023	Dec 31, 2023	Nitrate	MCL	Yes	No	13 MG/L	10 mg/L	10	Archived	Dec 31, 2023	Nitrate Rule
Oct 1, 2023	Dec 31, 2023	Nitrate	MCL	Yes	No	13 MG/L	10 mg/L	10	Archived	Dec 31, 2023	Nitrate Rule
Jul 1, 2023	Sep 30, 2023	Nitrate	MCL	Yes	No	12.4 MG/L	10 mg/L	10	Archived	Sep 30, 2023	Nitrate Rule
Jul 1, 2023	Sep 30, 2023	Nitrate	MCL	Yes	No	12.4 MG/L	10 mg/L	10	Archived	Sep 30, 2023	Nitrate Rule
Jul 1, 2023	Sep 30, 2023	Nitrate	MCL	Yes	No	12.4 MG/L	10 mg/L	10	Archived	Sep 30, 2023	Nitrate Rule
Jul 1, 2023	Sep 30, 2023	Nitrate	MCL	Yes	No	12.4 MG/L	10 mg/L	10	Archived	Sep 30, 2023	Nitrate Rule
Apr 1, 2023	Jun 30, 2023	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Jun 30, 2023	Nitrate Rule
Apr 1, 2023	Jun 30, 2023	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Jun 30, 2023	Nitrate Rule
Apr 1, 2023	Jun 30, 2023	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Jun 30, 2023	Nitrate Rule
Apr 1, 2023	Jun 30, 2023	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Jun 30, 2023	Nitrate Rule
Jan 1, 2023	Mar 31, 2023	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Mar 31, 2023	Nitrate Rule
Jan 1, 2023	Mar 31, 2023	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Mar 31, 2023	Nitrate Rule
Jan 1, 2023	Mar 31, 2023	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Mar 31, 2023	Nitrate Rule
Oct 1, 2022	Dec 31, 2022	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Dec 31, 2022	Nitrate Rule
Oct 1, 2022	Dec 31, 2022	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Dec 31, 2022	Nitrate Rule
Oct 1, 2022	Dec 31, 2022	Nitrate	MCL	Yes	No	12 MG/L	10 mg/L	10	Archived	Dec 31, 2022	Nitrate Rule
Jul 24, 2022	—	Public Notice	Other	No	No	—	—	—	Resolved	Jul 9, 2022	Public Notice Rule and Revised PN Rule
Jul 24, 2022	—	Public Notice	Other	No	No	—	—	—	Resolved	Jul 9, 2022	Public Notice Rule and Revised PN Rule
Jul 1, 2022	Sep 30, 2022	Nitrate	MCL	Yes	No	14.8 MG/L	10 mg/L	10	Archived	Sep 30, 2022	Nitrate Rule
Jul 1, 2022	Sep 30, 2022	Nitrate	MCL	Yes	No	14.8 MG/L	10 mg/L	10	Archived	Sep 30, 2022	Nitrate Rule
Apr 1, 2022	Jun 30, 2022	Nitrate	MCL	Yes	No	17 MG/L	10 mg/L	10	Archived	Jun 30, 2022	Nitrate Rule

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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