TYRN SEA v. 1.6 BetaBloom & mucilage preconditions · Calabrian coast

Official ARPACAL classification 2026

Summary of the ARPACAL report «Bathing Water Quality of Calabria» (May 2026): classification of 649 Calabrian bathing waters for the 2026 season, based on the 2022–2025 four-year window. This is the institutional dataset that triggers permanent bans and management obligations for the season.

Difference from the main page. The main bathing waters page shows real-time samples for the current season (E. coli and Enterococci, from the Ministry of Health portal + weekly ARPACAL xlsx). This page shows the official ARPACAL annual classification, computed at end of season over the previous four years, valid for the whole following season (it triggers bans for Poor-class areas).

Source: ARPACAL Published: 2026-05-15 Reference period: 2022-2025
579
Excellent (89,2%)
43
Good (6,6%)
10
Sufficient (1,5%)
17
Poor (2,6%)

Classification by province

Distribution of bathing waters by quality class for each Calabrian province, and coastline km covered. Reggio Calabria concentrates 88% of the Poor-class waters of the whole region.

Province Total Km Excellent Good Sufficient Poor
Cosenza (CS) 237 205,8 224 (94,5%) 11 1 1
Catanzaro (CZ) 102 99,5 98 (96,1%) 3 1 0
Crotone (KR) 85 108,8 73 (85,9%) 8 4 0
Reggio Calabria (RC) 161 186,7 127 (78,9%) 15 4 15
Vibo Valentia (VV) 64 70,1 57 (89,1%) 6 0 1

Classification by coastal zone

The same waters, split across the five TYRN SEA zones instead of by province. The provincial split does not show where the problems are, because Reggio Calabria spans both the Tyrrhenian and the Ionian side.

Zone Total Coast km Excellent Good Sufficient Poor
Tirreno Nord 129 150 117 (90.7%) 10 1 1
Tirreno Sud 102 175 89 (87.3%) 6 0 5
Estremo Sud 81 115 56 (69.1%) 9 4 11
Ionio Sud 129 190 123 (95.3%) 5 1 0
Ionio Nord 154 160 143 (92.9%) 7 4 0

Two readings. The Far South is the outlier: 69% Excellent waters against 90–95% in every other zone, and it holds 11 of the region’s 17 Poor waters, eight of them along Reggio’s urban seafront. The Ionian, north and south together, has no Poor water out of 283: a fact the provincial split hid, because Reggio’s Ionian coast was added to its Tyrrhenian one.

Which are the 17 Poor-class waters, and where

Of these, 15 out of 17 are currently closed to bathing: the Poor class is not an abstract label, it turns into bans in force. Tap the municipality to open its page, where the point is shown on the map.

Estremo Sud (11)

Tirreno Nord (1)

  • Paola · ZONA PENNELLI ELISUPERFICIE - EX PAOLA AREA 8 closed today

Tirreno Sud (5)

Why the totals differ from the provincial table

This table counts the 595 waters in the register currently active on the Ministry Portal; the provincial one counts 649, the register ARPACAL classified over 2022–2025, which includes points later dismissed. The difference is almost entirely in Excellent waters (51) plus 6 Good: Sufficient (10) and Poor (17) match exactly between the two sources, verified point by point against the 70 non-Excellent named in the report.

The kilometres also measure different things: here it is the zone’s total coast (790 km in total, recalibrated on the official 788.92 km for Calabria), while the provincial table reports the coast covered by bathing waters (670.9 km). They are not comparable.

Comparison 2025 → 2026

The regional picture is essentially stable: -11 excellent but +11 good (internal reclassification with no net worsening). Sufficient and Poor classes remain at contained values.

Class 2025 2026 Δ
Excellent 590 579 -11
Good 32 43 +11
Sufficient 11 10 -1
Poor 16 17 +1

Class changes 2025 → 2026

Sampling points that changed quality class from the 2025 to the 2026 classification. Most changes stay within the high classes (Excellent ↔ Good).

Improvements (15)
Prov.ComuneDenominazione 2025 → 2026
CS BELVEDERE MARITTIMO 100 MT SX T. DI MARE L.TA` CAPO TIRONE BUONA ECCELLENTE
CS BELVEDERE MARITTIMO 100 MT DX T. DI MARE L.TA` CAPO TIRONE BUONA ECCELLENTE
CS CETRARO 100 MT SX FIUME ARON BUONA ECCELLENTE
CS CROSIA SBOCCO F.SO DECANATO BUONA ECCELLENTE
CS PAOLA PAOLA AREA 9 SCARSA SUFFICIENTE
CZ CATANZARO PALAZZO BIANCO BUONA ECCELLENTE
KR CROTONE A 500 MT A SUD FIUME NETO BUONA ECCELLENTE
RC BIANCO CAMPING IONIO BLU BUONA ECCELLENTE
RC BRANCALEONE PONTILE SUFFICIENTE BUONA
RC MELITO PORTO SALVO STAZ. FF.SS. SUFFICIENTE BUONA
RC MELITO PORTO SALVO MARINA SUFFICIENTE BUONA
RC MELITO PORTO SALVO PILATI SUFFICIENTE BUONA
RC REGGIO CALABRIA LIDO CAPONERA BUONA ECCELLENTE
RC SAN FERDINANDO CAMPING PORTA DEL SOLE SUFFICIENTE BUONA
VV RICADI SUD TORRE MARINA BUONA ECCELLENTE
Worsenings (26)
Prov.ComuneDenominazione 2025 → 2026
CS BELVEDERE MARITTIMO SCOGLIO VETTICELLE ECCELLENTE BUONA
CS FALCONARA ALBANESE 100 MT SX TORRENTE MALPERTUSO ECCELLENTE BUONA
CS FUSCALDO 150 MT SX TORRENTE MADDALENA ECCELLENTE BUONA
CS FUSCALDO 150 MT DX TORRENTE MADDALENA ECCELLENTE BUONA
CS PAOLA PAOLA AREA 11 ECCELLENTE BUONA
CS SCALEA 150 MT SX FIUME LAO ECCELLENTE BUONA
CZ SOVERATO LOC. CORVO BUONA SUFFICIENTE
CZ STALETTI LIDO GUGLIELMO ECCELLENTE BUONA
CZ STALETTI RISTORANTE BILBO' ECCELLENTE BUONA
KR CIRO' MARINA 200 MT NORD DEPURATORE CIRO' MARINA BUONA SUFFICIENTE
KR CROTONE GABELLA GRANDE ECCELLENTE BUONA
KR CROTONE TOR. PASSO VECCHIO ECCELLENTE BUONA
KR CRUCOLI LIDO BRUTIUM ECCELLENTE SUFFICIENTE
KR ISOLA CAPO RIZZUTO CORRISPONDENTE VALTUR ECCELLENTE BUONA
KR STRONGOLI 300 MT NORD FIUME NETO ECCELLENTE BUONA
RC AFRICO STAZ. FF.SS. ECCELLENTE BUONA
RC GIOIA TAURO SIDAC SUFFICIENTE SCARSA
RC MONASTERACE CAMPING PUNTA STILO ECCELLENTE BUONA
RC REGGIO CALABRIA GALLICO - FATA MORGANA BUONA SUFFICIENTE
RC REGGIO CALABRIA LIDO COMUNALE VILLA ZERBI SUFFICIENTE SCARSA
RC SCILLA DEPURATORE ECCELLENTE BUONA
RC SCILLA CHIESA SAN GIUSEPPE ECCELLENTE BUONA
RC SCILLA 200 M N VALLONE CONDOLEO BUONA SUFFICIENTE
VV NICOTERA SUD SPIAGGIA PINETA ECCELLENTE BUONA
VV NICOTERA SUD SPIAGGIA PINETA 2 ECCELLENTE BUONA
VV RICADI SPIAGGIA S.MARIA ECCELLENTE BUONA
Non-excellent waters stable 2025 = 2026 (38)

Points keeping the same class (not Excellent) in both years. Structural criticalities deserving priority monitoring via TYRN SEA reports and Sentinel-2 imagery.

Prov.ComuneDenominazione Class
CS BELVEDERE MARITTIMO 250 MT DX FIUME SOLEO BUONA
CS CASSANO ALLO IONIO LIDO LAGHI DI SIBARI BUONA
CS PAOLA PAOLA AREA 8 SCARSA
CS PAOLA PAOLA AREA 13 BUONA
CS PAOLA PAOLA AREA 7 BUONA
CS SAN LUCIDO STAZ.NE FF.SS.SAN LUCIDO BUONA
CZ BORGIA 200 MT SUD F. CORACE BUONA
KR CIRO' MARINA HOTEL RANCH BUONA
KR CROTONE LIDO TRICOLI SUFFICIENTE
KR CROTONE DI FRONTE CIMITERO BUONA
KR CRUCOLI A 300 MT.SUD DEL TORRENTE CASSIA SUFFICIENTE
KR CRUCOLI LIDO FICO D'INDIA BUONA
KR MELISSA PALAZZINA CAPARRA BUONA
RC BRANCALEONE ALTALIA SUFFICIENTE
RC BRANCALEONE I.D. BRANCALEONE SCARSA
RC GIOIA TAURO PONTILE N SCARSA
RC GIOIA TAURO PONTILE S BUONA
RC GIOIA TAURO 200 M.PETRACE SCARSA
RC MONTEBELLO IONICO MUSA S.ELIA SCARSA
RC REGGIO CALABRIA CATONA - CENTRO SVIZZERO BUONA
RC REGGIO CALABRIA CATONA - BAR REITANO BUONA
RC REGGIO CALABRIA GALLICO - LIMONETO SCARSA
RC REGGIO CALABRIA GALLICO - LIDO MIMMO SUFFICIENTE
RC REGGIO CALABRIA GALLICO - CAMPING BUONA
RC REGGIO CALABRIA CIRCOLO NAUTICO SCARSA
RC REGGIO CALABRIA LIDO COMUNALE PONTILE N SCARSA
RC REGGIO CALABRIA LIDO COMUNALE PONTILE S SCARSA
RC REGGIO CALABRIA RAVAGNESE - AEROPORTO BUONA
RC REGGIO CALABRIA RAVAGNESE - SABBIE BIANCHE SCARSA
RC REGGIO CALABRIA S.GREGORIO - TEMESA N BUONA
RC REGGIO CALABRIA PELLARO - LUME SCARSA
RC REGGIO CALABRIA 500 M N TOTT. ANNUNZIATA SCARSA
RC REGGIO CALABRIA CIRCOLO VELICO SCARSA
RC SAN FERDINANDO DELTA MESIMA SCARSA
VV BRIATICO LA ROCCHETTA BUONA
VV NICOTERA 200 MT A DX F. MESIMA SCARSA
VV PIZZO AREA MUSEO CIVICO BUONA
VV ZAMBRONE SX F. POTAME BUONA
How ARPACAL classifies waters (method, 4 classes, statistical thresholds)

Classification follows the Italian M.D. 30 March 2010 annex II: for each area the 95th percentile of intestinal Enterococci and Escherichia coli is computed over the last four-year sampling window (at least 16 samples required; otherwise three-year). Legal thresholds are:

  • Excellent: EI ≤ 100 UFC/100ml · EC ≤ 250 UFC/100ml (95° perc.)
  • Good: EI ≤ 200 · EC ≤ 500 (95° perc.)
  • Sufficient: EI ≤ 185 · EC ≤ 500 (90° perc.)
  • Poor: higher values — bathing ban applies for the whole following season.

Areas in Poor class for 5 consecutive seasons are permanently excluded from bathing waters (art. 8(4) Italian D.Lgs. 116/2008). Mayors must prohibit bathing across the affected stretch until the first compliant sample of the following season.

Primary source. ARPACAL — Bathing Water Quality of Calabria. Classification 2026 Season (data 2022–2025), May 2026. Original PDF available on ARPACAL website: arpacal.it · Reports · Bathing. Data on this page are transcribed from the PDF and cross-validated against the Ministry of Health Bathing Water Portal.

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