Question 1

Is Cameron NTUA water safe to drink?

Accepted Answer

Cameron NTUA (PWS ID: NN0403010) has 137 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 742 people using Groundwater sources.

Question 2

How many people does Cameron NTUA serve?

Accepted Answer

EPA SDWIS reports that Cameron NTUA serves 742 people (this public water system's service population, not the municipal population of Fort Defiance or any other city). It is a Native American-owned system using Groundwater water sources with 217 service connections. The operator address is listed in Fort Defiance, Navajo Nation.

Question 3

What type of violations does Cameron NTUA have?

Accepted Answer

Cameron NTUA has 137 total violations: 28 health-based violations (MCL exceedances or treatment failures), 89 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Question 4

Has PFAS been detected in Cameron NTUA water?

Accepted Answer

No PFAS testing data is available for Cameron NTUA under the EPA's UCMR5 monitoring program.

Question 5

What water source does Cameron NTUA use?

Accepted Answer

Cameron NTUA uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Question 6

Where does this data come from?

Accepted Answer

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Question 7

Where does Cameron NTUA sit among U.S. public water systems?

Accepted Answer

According to EPA SDWIS population_served among sitemap-advertised systems (serving 500+), Cameron NTUA ranks #23,631 of 29,740 by people served, and #67 of 82 in Navajo Nation. Ordinals use population_served DESC among systems serving 500+ (the sitemap cohort). See /methodology#corpus-placement.

Question 8

How does Cameron NTUA's violation count compare nationally?

Accepted Answer

Cameron NTUA has 137 recorded EPA SDWIS violations, fewer than 20% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 79% of that cohort has fewer violations than Cameron NTUA. A system can have zero recorded violations and still be actively monitored, and a high violation count often reflects a system that reports thoroughly, not necessarily one with worse water.

Contaminant	Category	Count	Latest
TTHM	MCL	26	2015
TTHM	MR	12	2015
Lead and Copper Rule	MR	9	2024
Coliform (TCR)	MR	8	2013
Total Haloacetic Acids (HAA5)	MR	7	2015
Public Notice	Other	4	2015
Chromium	MCL	1	2000
Nitrate	MR	1	2006
Endrin	MR	1	2001
BHC-GAMMA	MR	1	2001
Methoxychlor	MR	1	2001
Toxaphene	MR	1	2001
Dalapon	MR	1	2001
Diquat	MR	1	2001
Endothall	MR	1	2001
OXAMYL	MR	1	2001
Hexachlorocyclopentadiene	MR	1	2001
Carbofuran	MR	1	2001
Atrazine	MR	1	2001
LASSO	MR	1	2001
Heptachlor	MR	1	2001
Heptachlor epoxide	MR	1	2001
2,4,5-TP	MR	1	2001
HEXACHLOROBENZENE	MR	1	2001
Pentachlorophenol	MR	1	2001
cis-1,2-Dichloroethylene	MR	1	2001
Total Polychlorinated Biphenyls (PCB)	MR	1	2001
Chlordane	MR	1	2001
o-Dichlorobenzene	MR	1	2001
1,1-Dichloroethylene	MR	1	2001

Cameron NTUA

Cameron NTUA standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Population served record for Cameron NTUA

Nationwide peers

Cross-state systems with comparable violation load

Cross-state systems with smaller service footprints