Public water system · NN0400824
ActiveBaby Rocks NTUA
At a glance
Baby Rocks NTUA (PWSID NN0400824) is an active community water system in Arizona. It reports serving 44 people through 13 service connections. Its primary water source is groundwater, and EPA lists it as Native American-owned. EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
44
Service connections
13
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Baby Rocks NTUA compare with other water systems in Arizona?
By EPA's size categories, Baby Rocks NTUA is a very small system (500 people or fewer). Across Arizona, the 1,769 active systems average 4,369 people each. Nationally, the average active community water system reports serving 6,703 people, so Baby Rocks NTUA is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Arizona has 936 active community water systems, 53% of the state's 1,769 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,612 Arizona systems (91%) list groundwater as their primary source.
Who owns and regulates Baby Rocks NTUA?
EPA lists Baby Rocks NTUA as Native American-owned. The NN state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.
Does Baby Rocks NTUA have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2018. The violations listed here began between October 2013 and January 2018. By type: 2 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Lead and Copper Rule, Revised Total Coliform Rule and Stage 2 Disinfectants and Disinfection Byproducts Rule. EPA lists 3 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2018-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2016-04-01 | Public notice, recordkeeping or otherSample Siting Plan Errors (RTCR) · code 5A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2013-10-01 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600 | No | Resolved |
All 3 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Baby Rocks NTUA: frequently asked questions
Who runs Baby Rocks NTUA?
Baby Rocks NTUA (PWSID NN0400824) is a community water system Native American-owned. It is regulated by the NN state drinking water program.
How many people does Baby Rocks NTUA serve?
Baby Rocks NTUA reports serving 44 people through 13 service connections in Arizona.
Where does Baby Rocks NTUA get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Baby Rocks NTUA have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2018. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Baby Rocks NTUA's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the NN state drinking water program.
Where can I find Baby Rocks NTUA's water quality report?
As a community water system, Baby Rocks NTUA must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Arizona
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Phoenix City of | Maricopa | 1,695,000 | Community | Surface water |
| Tucson City of | Pima | 732,906 | Community | Groundwater |
| Mesa City of | Maricopa | 466,000 | Community | Surface water |
| Gilbert, Town of | Maricopa | 247,600 | Community | Surface water |
| Chandler City of | Maricopa | 247,328 | Community | Surface water |
| Scottsdale City of | Maricopa | 241,361 | Community | Surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Baby Rocks NTUA, PWSID NN0400824, Arizona”, https://aquacensus.com/water-systems/arizona/baby-rocks-ntua-nn0400824 (data as of October 1, 2026).