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One beach not suitable for swimming this week, DRNA says: Pico de Piedra

Published Sep 17, 2026 · 787 Daily · Original analysis

DRNA’s weekly beach notice, published September 16, names one beach as not suitable for swimming. Pico de Piedra in Aguada has now been named in 8 of the 60 notices on file, more than any other beach on this week’s list.

This week’s DRNA notice, published September 16 from samples taken September 14, names just one beach as not suitable for swimming: Pico de Piedra in Aguada. That beach has now shown up in 8 of the 60 notices on file, more than any other beach flagged this week. Five beaches named last time have dropped off this week’s list, but that’s mostly because they haven’t been sampled recently, not because conditions improved.

The bigger story is how little of the coast is actually being checked. Of the 49 monitoring stations DRNA tracks, none have a sample from within the last 21 days, leaving 48 stations without recent data. Zooming out over the full season, Tropical Beach in Naguabo has been named most often, in 25 of the 60 notices, a reminder that this week’s single flag is only a narrow slice of a much patchier record.

Not suitable for swimming this week

Source: DRNA "Notificación Monitoria de Playas", posted September 16; samples taken September 14. Numbers from CARICOOS's monitoring feed.
BeachTownEnterococcusSampledTimes flagged this season
Pico de PiedraAguada209August 248 of 60

Off the list since the last notice

Source: DRNA's notices of September 11 and September 16.
BeachTownNowSampled
Balneario Manuel Nolo Morales; SardineraDoradoNot sampled recentlyAugust 25
Playa Sixto EscobarSan JuanNot sampled recentlyAugust 25
Tropical BeachNaguaboNot sampled recentlyAugust 24
Playa GuayanésYabucoaNot sampled recentlyAugust 24
Playa CabullónPonceNot sampled recentlyAugust 25

Coming off the list is not a certificate: it means this week’s notice does not name the beach, from samples taken September 14.

What this notice does and does not say

1 of 49 stations · under advisory 48 of 49 stations · not sampled in 21 days48 under advisory not sampled in 21 days
All 49 DRNA monitoring stations by their latest verdict. Grey is unknown, not bad — a station with no sample in 21 days has not passed anything and has not failed anything. Every station's own number and date is on the beach water quality page.
DRNA publishes the notice days after the water is sampled — this one covers samples taken September 14, posted September 16, and a heavy shower can push a beach over the 70-colony action value hours after a clean sample was taken. A beach that is not named was either within limits or was not sampled, and the two are not the same thing: 48 of the 49 monitoring stations carry no sample from the last 21 days.

Volunteer labs test some beaches DRNA does not, and their results are published separately: they are not part of this notice and cannot put a beach under advisory.

Every monitoring station, with its own number and its own date, is on the beach water quality page; DRNA’s notice itself is here (and as a PDF, which is a scan).

This is the 3rd Beach Watch (the previous one is here).

Source: DRNA “Notificación Monitoria de Playas”, posted September 16; samples taken September 14. Numbers from CARICOOS’s monitoring feed. The Beach Action Value is 70 colonies of Enterococcus per 100 mL; DRNA’s notice is the only thing that puts a beach under a swimming advisory, and it is superseded by the next one.