Question 1

Is Toadlena Boarding School BIA water safe to drink?

Accepted Answer

Toadlena Boarding School BIA (PWS ID: NN3532011) has 153 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 200 people using Groundwater sources.

Question 2

How many people does Toadlena Boarding School BIA serve?

Accepted Answer

EPA SDWIS reports that Toadlena Boarding School BIA serves 200 people (this public water system's service population, not the municipal population of Newcomb or any other city). It is a Federal-owned system using Groundwater water sources with 30 service connections. The operator address is listed in Newcomb, Navajo Nation.

Question 3

What type of violations does Toadlena Boarding School BIA have?

Accepted Answer

Toadlena Boarding School BIA has 153 total violations: 0 health-based violations (MCL exceedances or treatment failures), 137 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 Toadlena Boarding School BIA water?

Accepted Answer

No PFAS testing data is available for Toadlena Boarding School BIA under the EPA's UCMR5 monitoring program.

Question 5

What water source does Toadlena Boarding School BIA use?

Accepted Answer

Toadlena Boarding School BIA 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

How does Toadlena Boarding School BIA's violation count compare nationally?

Accepted Answer

Toadlena Boarding School BIA has 153 recorded EPA SDWIS violations, fewer than 19% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 81% of that cohort has fewer violations than Toadlena Boarding School BIA. 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
Coliform (TCR)	MR	8	2015
2,3,7,8-TCDD	MR	6	2008
Fluoride	MR	4	2008
Total Haloacetic Acids (HAA5)	MR	3	2022
Revised Total Coliform Rule	RPT	3	2025
Revised Total Coliform Rule	Other	3	2016
TTHM	MR	3	2022
Nitrate	MR	2	2024
Nitrite	MR	2	2024
Endrin	MR	2	2004
Toxaphene	MR	2	2004
Dalapon	MR	2	2004
Diquat	MR	2	2004
Glyphosate	MR	2	2004
Di(2-ethylhexyl) adipate	MR	2	2004
OXAMYL	MR	2	2004
Picloram	MR	2	2004
Hexachlorocyclopentadiene	MR	2	2004
Aldicarb sulfoxide	MR	2	2004
Aldicarb sulfone	MR	2	2004
Carbofuran	MR	2	2004
Atrazine	MR	2	2004
Heptachlor	MR	2	2004
Heptachlor epoxide	MR	2	2004
2,4-D	MR	2	2004
Benzo(a)pyrene	MR	2	2004
cis-1,2-Dichloroethylene	MR	2	2004
Total Polychlorinated Biphenyls (PCB)	MR	2	2004
Xylenes, Total	MR	2	2004
DICHLOROMETHANE	MR	2	2004

Toadlena Boarding School BIA

Toadlena Boarding School BIA standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Health-based violations on Toadlena Boarding School BIA

Nationwide peers

Cross-state systems with comparable violation load