Perry Alagappan: The Houston Teenager Who Won Stockholm's Water Prize

Biography

The 2015 Stockholm Junior Water Prize

The Stockholm Junior Water Prize winners list records Alagappan as the 2015 laureate, representing the United States, for a nanotechnology method that removes electronic waste from water. That single line is, in practice, the whole public description of the project in the winners record; the list is a register of results rather than an account of method.

The prize itself is unusually heavy for a school award. It is administered by the Stockholm Water Foundation and carries a scholarship of 15,000 US dollars and a blue crystal sculpture. Crown Princess Victoria of Sweden has been its patron since the prize was founded, and the international final is held during World Water Week in Stockholm, where the national winners present their work to expert juries.

The science fair that came first

A year earlier, Alagappan had already cleared the other summit available to a student scientist. The Society for Science award listings for the 2014 Intel International Science and Engineering Fair record him as a Best of Category winner in Environmental Sciences, competing from Houston.

Intel ISEF is the largest pre-college science competition in the world and is run by the Society for Science. Finalists reach it by winning affiliated regional and national fairs, and a Best of Category award is the top prize inside one of the fair's subject categories, chosen from among that category's finalists. It is a category championship rather than a participation award, and it is the usual route by which a high-school project enters the international circuit.

How the two prizes connect

The sequence is the standard architecture of elite school science, and it explains how a single project can collect two very different honours in two years. The Stockholm prize is fed by national competitions: the finalists in Stockholm are the winners of their own countries' contests, drawn from a field the organisers describe as more than 10,000 entries across over 30 countries, open to competitors aged roughly 15 to 20.

In the United States that national stage sits alongside the science-fair circuit that ISEF sits at the top of. A project strong enough to take a Best of Category award at the international fair is exactly the kind of work that then travels to Stockholm as a national representative, which is the path the record shows Alagappan taking between 2014 and 2015.

Where Perry Alagappan is now

Nothing in the sources used here describes what Alagappan did after 2015. There is no published account of whether the filtration work was developed further, patented, commercialised or abandoned, and no record of what he went on to study.

That silence is normal rather than notable. Science-fair coverage tends to be intense in the week of a result and absent afterwards, and the winners lists that preserve the result are not designed to follow careers. The honest statement is that the award is documented and the aftermath is not.

What the prize has rewarded before and since

The winners either side of him give a sense of the register the prize operates in. The 2014 award went to Hayley Todesco of Canada for a sand-filter method of treating oil-contaminated water. The 2016 award went to a Thai team, Sureeporn Triphetprapa, Thidarat Phianchat and Kanjana Komkla, for a water-retention device that copies the structure of a bromeliad plant.

All three are cheap, physical answers to a specific contamination or scarcity problem, which is the shape the jury has consistently rewarded: not a laboratory curiosity but a device or method that could plausibly be built. Alagappan's e-waste filter sits squarely in that tradition, and the prize record places it there without further elaboration.

Achievement Timeline

Perry Alagappan — every milestone on this page, in order.

2014

Wins Best of Category in EnvironmentalWins Best of Category in Environmental Sciences at Intel ISEF, competing from Houston (Society for Science)

2015

Named Stockholm Junior Water Prize winNamed Stockholm Junior Water Prize winner for a nanotechnology method removing electronic waste from water (SJWP winners list)

2015

Receives the prize during World Water Receives the prize during World Water Week in Stockholm, where the award is presented under the patronage of Crown Princess Victoria

Historical Comparison

Person	Country	Milestone	Age / Stat
Rishi Shiv Prasanna	India	Winning the Pradhan Mantri Rashtriya Bal Puraskar in 2023 at eight, for…	Age 0
Cannan Huey-You	United States	Presenting research on a Milky Way gas cloud at the American Astronomical…	Age 11
Ángela Olazarán Laureano	Mexico	An AI medical assistant built in Veracruz, designed to work where there is	Age 14
Émer Hickey	Ireland	Co-winning the 2014 Google Science Fair grand prize	Age 16
Perry Alagappan	United States	2015 Stockholm Junior Water Prize winner	—

What is documented — and what is not

✓ Documented

Best of Category, Environmental Sciences, Intel ISEF 2014, competing from Houston (Society for Science award listings)
2015 Stockholm Junior Water Prize winner for the United States, for a nanotechnology method removing electronic waste from water (SJWP winners list)
Prize terms: US$15,000 scholarship and blue crystal sculpture, patron Crown Princess Victoria of Sweden

? Unverified, disputed or wrong

No published date or year of birth
No detailed technical description of the filtration method in the sources used here
No reporting found on his studies, career or the project after 2015

Questions people ask about Perry Alagappan

What did Perry Alagappan win?

Two awards. Best of Category in Environmental Sciences at the Intel International Science and Engineering Fair in 2014, and the Stockholm Junior Water Prize in 2015.

What was his project?

The Stockholm Junior Water Prize winners list describes it as a nanotechnology method for removing electronic waste from water. No fuller technical description appears in the sources used here.

How old is Perry Alagappan?

No source used here gives his date or year of birth. The Stockholm Junior Water Prize is open to competitors aged roughly 15 to 20, which places him in that range in 2015.

How much is the Stockholm Junior Water Prize worth?

A scholarship of 15,000 US dollars and a blue crystal sculpture. Crown Princess Victoria of Sweden has been the prize's patron since it was founded.

Where is Perry Alagappan now?

No source used here reports anything about him after 2015. What happened to the filtration work, and what he went on to study, is not documented in this record.

Is Perry Alagappan on Wikipedia?

He has no Wikipedia article of his own. His name appears in the winners list on Wikipedia's article about the Stockholm Junior Water Prize.

How hard is it to win Best of Category at ISEF?

Intel ISEF is the largest pre-college science fair in the world. Finalists qualify by winning affiliated regional and national fairs, and a Best of Category award is the top prize within one subject category at the international final.

Who won the Stockholm Junior Water Prize around him?

Hayley Todesco of Canada took the 2014 prize for a sand-filter treatment of oil-contaminated water; a Thai team won in 2016 for a bromeliad-inspired water-retention device.