Question 1

Is Byram Hills High School water safe to drink?

Accepted Answer

Byram Hills High School (PWS ID: NY5907710) has 436 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 800 people using Groundwater sources.

Question 2

How many people does Byram Hills High School serve?

Accepted Answer

EPA SDWIS reports that Byram Hills High School serves 800 people (this public water system's service population, not the municipal population of Armonk or any other city). It is a Local-owned system using Groundwater water sources with 2 service connections. The operator address is listed in Armonk, New York.

Question 3

What type of violations does Byram Hills High School have?

Accepted Answer

Byram Hills High School has 436 total violations: 0 health-based violations (MCL exceedances or treatment failures), 429 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 Byram Hills High School water?

Accepted Answer

No PFAS testing data is available for Byram Hills High School under the EPA's UCMR5 monitoring program.

Question 5

What water source does Byram Hills High School use?

Accepted Answer

Byram Hills High School uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.

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 Byram Hills High School sit among U.S. public water systems?

Accepted Answer

According to EPA SDWIS population_served among sitemap-advertised systems (serving 500+), Byram Hills High School ranks #22,617 of 29,740 by people served, and #915 of 1,204 in New York. Ordinals use population_served DESC among systems serving 500+ (the sitemap cohort). See /methodology#corpus-placement.

Question 8

How does Byram Hills High School's violation count compare nationally?

Accepted Answer

Byram Hills High School has 436 recorded EPA SDWIS violations, fewer than 6% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 94% of that cohort has fewer violations than Byram Hills High School. 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
Lead and Copper Rule	MR	21	2009
Endrin	MR	10	2003
Chlordane	MR	10	2003
Pentachlorophenol	MR	10	2003
HEXACHLOROBENZENE	MR	10	2003
2,4,5-TP	MR	10	2003
2,4-D	MR	10	2003
Heptachlor epoxide	MR	10	2003
Heptachlor	MR	10	2003
LASSO	MR	10	2003
Atrazine	MR	10	2003
Carbofuran	MR	10	2003
Aldicarb sulfoxide	MR	10	2003
Hexachlorocyclopentadiene	MR	10	2003
Picloram	MR	10	2003
Di(2-ethylhexyl) phthalate	MR	10	2003
Simazine	MR	10	2003
OXAMYL	MR	10	2003
Di(2-ethylhexyl) adipate	MR	10	2003
Toxaphene	MR	10	2003
Dalapon	MR	10	2003
Aldicarb sulfone	MR	10	2003
Aldicarb	MR	10	2003
Benzo(a)pyrene	MR	10	2003
ETHYLENE DIBROMIDE	MR	10	2003
BHC-GAMMA	MR	10	2003
Total Polychlorinated Biphenyls (PCB)	MR	10	2003
Dinoseb	MR	10	2003
Methoxychlor	MR	10	2003
Coliform (TCR)	MR	8	2016

Byram Hills High School

Byram Hills High School standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Health-based violations on Byram Hills High School

Nationwide peers

Cross-state systems with comparable violation load

Cross-state systems with smaller service footprints