Greek Water Reports
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Greece water dashboard

Primary-source water decisions & stress across Greece — Diavgeia acts, permit refusals, island emergencies

A Greece-wideview of what the country's water utilities (ΔΕΥΑ) and Water Directorates are actually deciding — nationwide Diavgeia acts, borehole & well refusals pulled from all 13 regional Water Directorates, and island emergency status. Every figure traces to a public record (ΑΔΑ / RBMP / civil-protection declaration). Crete is the most deeply seeded municipality-level region and sits at the bottom as a worked example — its figures are Crete-only, not the national totals.

190,355
Water acts · 2 yrWater-related decisions the municipal utilities published on Diavgeia — Greece's official government-transparency portal — over the last two years. The sparkline shows the month-by-month trend.
134
DEYAs trackedΔΕΥΑ are Greece's municipal water and sewerage companies — the local utilities that supply drinking water and treat wastewater. This is how many we currently monitor.
municipal water utilities
94,266
Permit records assessedEvery borehole/well permit decision pulled row-by-row from the 13 regional Water Directorates over 2015–2026 via the Diavgeia OpenData API (water-unit filtered) — 92,994 grants + 1,272 refusals/revocations. Exact and ΑΔΑ-verified, not an estimate.
pulled · 13 directorates · 2016–26
1272
Refusals on recordBorehole/well permit requests the Water Directorates formally refused or revoked — each one verified against a public decision (ΑΔΑ) on Diavgeia. It's a “floor”: the true number is at least this, since a refusal worded outside our search terms wouldn't surface.
all 13 directorates · floor
1.3%
Formal denial rateOf every permit decision on record, the share that was a refusal (refusals ÷ all decisions). A low national rate isn't proof water is available — it mostly reflects how a directorate records decisions. Refusals concentrate in Attica and Crete.
1,272 of 94,266 · exact
9
Islands in emergencyAegean islands under an official civil-protection water-emergency declaration — for example a desalination-plant failure or an acute summer shortage that triggered state emergency measures.
of 29 tracked islands
84/588
Aquifers over-drawn · WFDGroundwater bodies rated “poor” for quantity under the EU Water Framework Directive — pumped faster than they naturally refill. Source: Greece's official River Basin Management Plans (RBMP, 3rd cycle). Where a new well is most likely to be refused.
quantitative status · RBMP 3
31
Sewerage ≥90% fullWastewater-treatment plants estimated to be running at or above 90% of their design capacity — little headroom to accept new connections. A proxy indicator derived from ΥΠΕΝ (Environment Ministry) 2025 data, not a live utility feed. Scored over 283 of 289 monitored plants — 6 lack a capacity or connection figure, so this denominator is smaller than the 289-plant compliance count.
of 283 scored · proxy
1.3%denied
Formal denial rate
≈ 1 in 74 decisions
1,272 refusals of 94,300 · exact, row-level

Nationwide Diavgeia acts · South Aegean Water-Directorate permits · Aegean island emergencies — each detailed in its own panel below.

01

The two axes — resource & network

A connection can be refused for two independent reasons: the aquifer is over-drawn (resource), or the sewerage plant that would serve the site is failing or full (network). Read them together.

Resource axis · aquifers

National groundwater status

Every groundwater body in Greece (588), by river basin district, from the official Water Framework Directive plan (3rd-cycle RBMP). Bars rank districts by quantitativestatus — a body is “poor” when it is over-abstracted, which is the capacity constraint behind a refusal.
588
Groundwater bodiesEvery distinct aquifer (groundwater body) Greece assesses under the EU Water Framework Directive — the units the good/poor ratings below are counted over.
84
Over-abstractedAquifers rated “poor” for quantity — pumped out faster than rain and rivers refill them. This is the resource limit that gets a new well refused.
14% of bodies
86
Chemically poorAquifers rated “poor” for chemistry — polluted (e.g. nitrates or saltwater intrusion). A separate problem from over-pumping, shown here for context.
pollution, separate axis
111
Not in good statusAquifers that fail on either axis — quantity or chemistry. The Water Framework Directive's headline “is this water body healthy?” verdict.
poor on either axis
Good on both axes477Not in good status111
District · worst first0%30%over-drawn
ThessalyGR0810/3429%
AtticaGR066/2425%
Western MacedoniaGR0910/4821%
Aegean IslandsGR1423/11420%
Central MacedoniaGR107/3818%
Northern PeloponneseGR026/3418%
Eastern PeloponneseGR036/3418%
Eastern MacedoniaGR112/1513%
CreteGR1310/9111%
Western Sterea ElladaGR042/268%
ThraceGR121/186%
Eastern Sterea ElladaGR071/452%
Western PeloponneseGR010/270%
EpirusGR050/400%

Reading it:quantitative “poor” = the aquifer is drawn down faster than it recharges (the capacity limit). Chemical “poor” is a separate pollution axis. A body is “not in good status” if either fails — 111 of 588 nationally.

Source: Special Secretariat for Water (ΥΠΕΝ / Ε.Γ.Υ.) · layer gr_gwb_greece_2rev (Υπόγεια Υδατικά Συστήματα – 2η Αναθεώρηση (approved 3rd RBMP)) · WFD 3rd-cycle RBMP · 588 bodies across 14 river basin districts. Retrieved from the ΥΠΕΝ WFS service; every body carries an explicit ΚΑΛΗ/ΚΑΚΗ value (no unclassified bodies).

Network axis · sewerage & treatment

Sewerage & treatment capacity

The network axis — whether the wastewater plant serving a place is compliant and has room for a new connection. A refusal can land here even where the aquifer is fine (this is what stopped the Plaka 5★: the Elounda plant runs near capacity). Live ΥΠΕΝ monitoring, reference year 2026.
289
Treatment plantsUrban wastewater-treatment plants monitored nationally by the Environment Ministry (ΥΠΕΝ) — the network side of a connection decision.
41
Non-compliant (2026)Plants failing their EU treatment standards in the latest reporting year (2026) — discharging inadequately treated wastewater. A live pass/fail from the utility, not an estimate.
failing right now
31
At capacity (≥90%)Plants estimated to be running at 90%+ of the population load they were built for — little room to accept a new connection. A proxy (connected population ÷ design size), not a live meter.
of 283 scored · proxy
11
Over 100%Plants whose estimated load already exceeds the capacity they were designed for — overloaded. Same population-based proxy as “at capacity”.
load exceeds design
Passing compliance248Failing41
Plant · worst first0%100% of designload
POROS-GALATASnon-compliant100%
OURANOPOLInon-compliant92%
IERISSOSnon-compliant89%
SOFADESnon-compliant88%
ARGOS ORESTIKOnon-compliant84%
PYTHAGORIOnon-compliant75%
PLATYnon-compliant68%
DESFINAnon-compliant67%
LEFKADAnon-compliant66%
KAMENA VOURLAnon-compliant61%
75% constrained threshold90% at-capacity thresholdLoad ≥ design capacity

Two signals: compliance is the utility's live pass/fail; utilisation is a proxy — connected population ÷ design capacity (p.e.), not a metered hydraulic load — so read it as an indicator, not a meter reading.

Source: ΥΠΕΝ — Wastewater Treatment Plants Monitoring Database (astikalimata.ypeka.gr), reference year 2026. Design capacity in p.e.; a direct metered load and m³/day capacity are not exposed by this source.

02

Decisions & refusals

What the utilities and the Water Directorates are actually deciding — every act traceable to its ΑΔΑ on diavgeia.gov.gr.

Utility layer · national water-organisation record

What the water utilities are doing

Every act published by Greece's water organisations (ΔΕΥΑ, ΕΥΔΑΠ, ΕΥΑΘ, ΤΟΕΒ) to the national Diavgeia portal since 2015 — 1,999,946 acts pulled in full, 190,355 tagged by water-supply topic from the subject. Primary source, CC-BY.
Live · 134 organisations · to 2026-10
190,355
Water-supply actsActs whose subject is about water supply — sources, drought, tankers, tariffs, quality, leakage, wastewater — out of every act the organisations published. The sparkline is the month-by-month trend.
1,419
Drought responseActs that cite λειψυδρία or ξηρασία, or ban a use (irrigation, washing, pool filling) — emergency contracts under a drought programme count here.
1,046
Emergency & traded supplyWater moved by tanker truck or ship, water bought from another network, and bulk sales to third parties — the 'water sold' layer.
134
OrganisationsWater organisations with at least one water-supply act — municipal utilities (ΔΕΥΑ), ΕΥΔΑΠ, ΕΥΑΘ and the irrigation organisations (ΤΟΕΒ).

What the decisions say

Drought response1,419
Emergency & traded supply1,046
New supply24,989
Operations context162,901

Where the refusals are. Utilities publish spending and operations, not connection refusals, so this layer shows stress the other way round — drought programmes, tankers and purchased water. Permit refusals sit in the Water-Directorate layer below: all 13 regional directorates, 1,272 borehole & well refusals on record, a floor. Topics are read from the act subject; an act that cites λειψυδρία in a contract title counts as drought response even when it is a procurement — the count is of acts, not of restrictions imposed.

Acts per month

20261,8645502025-052026-102025-05: 1,688 acts2025-06: 1,619 acts2025-07: 1,864 acts2025-08: 1,283 acts2025-09: 1,609 acts2025-10: 1,610 acts2025-11: 1,545 acts2025-12: 1,788 acts2026-01: 1,555 acts2026-02: 1,554 acts2026-03: 1,726 acts2026-04: 1,574 acts2026-05: 1,599 acts2026-06: 1,745 acts2026-07: 1,845 acts2026-08: 1,265 acts2026-09: 1,576 acts2026-10: 550 acts

Hover a month for its count. The sawtooth is publication cadence — acts cluster at billing and budget deadlines. Showing the latest 18 months of the record; the last month is partial.

Most active utilities

DEYA010,487acts
DEYA Chanion10,487
DEYA Lesvou8,386
DEYA Rodou7,418
DEYA Syrou N Kykladon6,556
DEYA Pangaiou5,844
DEYA Larisas5,540
DEYA Mylopotamou3,992
DEYA Chalkidos3,990
DEYA Spartis3,964
DEYA Thasou3,805

Coverage: 1,999,946 acts of 149 water organisations (ΔΕΥΑ, ΕΥΔΑΠ, ΕΥΑΘ, ΤΟΕΒ) pulled in full from the Diavgeia search API, 2015-01–2026-10; 190,355 carry a water-supply topic from the act subject (the rest are procurement, payroll and general administration). Topic rules: scripts/db/allocation and bm4040/classify_layers.py. Counts are floors.

Dataset generated 2026-10-13 · water-relevant acts since 2015-01-01 · primary source diavgeia.gov.gr (CC-BY), each act traceable to its ΑΔΑ.

Decisions · the refusal layer

Water-permit refusals

Borehole (γεώτρηση) and well permits are decided by Greece's 13 regional Water Directorates; refusals and revocations are recorded here. We've pulled all 13. The itemised, applicant-level ledger below is the South Aegean, shown as a sample. Primary source: Diavgeia.

National refusals on record — 1,272

all 13 directorates · floor

883 new applications refused + 389 permits revoked · 139 companies / 1,133 individuals · 2015-01 to 2026-10. Every one of Greece's 13 regional Water Directorates searched; each pull is a search-bounded floor, so the true count is higher still.

Water Directorate0717refusals
Attica717
Crete297
Epirus66
East Macedonia–Thrace50
Peloponnese46
South Aegean29
North Aegean18
Sterea Ellada17
Central Macedonia10
Ionian Islands8
Thessaly6
West Greece5
West Macedonia3

"23" was the South Aegean alone — one directorate of 13. The national floor is 1,272.

Recent snapshot

~6-month South Aegean window · a sample of approval behaviour
179
Permits decided
172
Approved / renewed
7
Rejected / revoked
96.1%
Approval rate
Approved / renewedRejected / revoked
Municipality032app / rej
Paroswater emergency28 / 4
Andros30
Rhodeswater emergency22
Naxos & Lesser Cycladeswater emergency20 / 1
Kos12
Mykonoswater emergency12
Syros-Ermoupoli10
Tinoswater emergency9
Leroswater emergency6
Municipality032app / rej
Kea5
Thira (Santorini)water emergency5
Serifos2 / 2
Antiparos3
Sifnoswater emergency3
Kythnos2
Karpathoswater emergency2
Milos1

Every S. Aegean refusal on record — 2015-01 to 2026-10

S. Aegean · itemised sample · floor

29 refusals — 0 new applications denied + 29 permits revoked · 1 companies / 28 individuals.

Companies1Individuals28

Applicant mix varies by municipality. On Mykonos (4/4) and Serifos (3/3) every refused well is a company; on Paros (10) they are mostly individuals.

Paros 10 · 1 co.Mykonos 4 · 4 co.Naxos & Lesser Cyclades 3Serifos 3 · 3 co.Sifnos 1Kea 1Patmos 1

🔒 We track every refusal on the record. The itemised detail — applicant, decision wording and each ΑΔΑ — is unlocked in a report.

Unlock in a report
  • 2015-12-10ΝΑΞΟΥIndividualRevoked · Irrigation

  • 2015-12-18ΣΥΡΟΥIndividualRevoked · Irrigation

  • 2016-04-18ΡΟΔΟΥ.IndividualRevoked · Irrigation

  • 2016-06-24IndividualRevoked ·

  • 2016-09-23ΜΗΛΟΥCompanyRevoked · Green/landscape

  • 2017-06-29ΝΑΞΟΥIndividualRevoked ·

  • 2018-01-11ΜΥΚΟΝΟΥIndividualRevoked ·

  • 2019-10-02ΝΑΞΟΥIndividualRevoked ·

  • 2020-07-23ΝΑΞΟΥIndividualRevoked ·

  • 2020-09-23ΣΥΡΟΥIndividualRevoked ·

  • 2021-07-06ΜΥΚΟΝΟΥIndividualRevoked · Domestic/potable

  • 2021-07-07ΜΥΚΟΝΟΥIndividualRevoked · Domestic/potable

  • 2021-08-02ΜΥΚΟΝΟΥIndividualRevoked · Domestic/potable

  • 2021-12-22ΚΥΘΝΟΥIndividualRevoked ·

  • 2022-08-16ΑΝΤΙΠΑΡΟΥIndividualRevoked ·

  • 2022-12-08ΝΑΞΟΥIndividualRevoked ·

  • 2023-03-20ΣΥΡΟΥ-ΕΡΜΟΥΠΟΛΗΣIndividualRevoked · Domestic/potable

  • 2024-03-05ΠΑΡΟΥIndividualRevoked ·

  • 2024-12-04ΚΑΛΥΜΝΟΥIndividualRevoked · Irrigation

  • 2025-02-04ΠΑΡΟΥIndividualRevoked · Irrigation

  • 2025-02-07ΠΑΡΟΥIndividualRevoked · Irrigation

  • 2025-10-29ΚΕΑΣIndividualRevoked · ΠΟΛΛΑΠΛΗ

  • 2025-12-09ΜΥΚΟΝΟΥIndividualRevoked · Irrigation

  • 2026-01-22ΣΥΡΟΥ ΕΡΜΟΥΠΟΛΗΣIndividualRevoked · Irrigation

  • 2026-03-13ΑΝΔΡΟΥIndividualRevoked · Irrigation

  • 2026-07-15ΑΝΔΡΟΥIndividualRevoked · Domestic/potable

  • 2026-07-17ΣΥΡΟΥ ΕΡΜΟΥΠΟΛΗΣIndividualRevoked · Irrigation

  • 2026-09-21ΜΥΚΟΝΟΥIndividualRevoked · Green/landscape

  • 2026-09-22ΤΗΝΟΥIndividualRevoked · Irrigation

Refusals & revocations ONLY, 2024–mid 2026. A floor: page-save truncation retained ~77% of decisions per 6-month window, so the true count is at least this. Separate scope from the recent approve/reject snapshot. · warehouse (data/acts) — Diavgeia OpenData API by water unit, exact · generated 2026-10-13.

03

Where the stress sits

Observed, cited stress per island, with the WFD aquifer layer ringed on top.

Geography · island stress

Greece water map

Marker fill shows observed, cited stress — declared emergencies and refused wells. A red ring marks islands whose own aquifer is over-abstracted under the WFD: 13 of 29 mapped islands sit over an over-drawn groundwater body (joined by the official body name, N <island>). Grey fill means no cited event — not a clean bill of health.
Observed stress + WFD aquifer
Andros — No cited stress signal · per-island WFD pending · aquifer good (WFD)Tinos — Declared water emergency · Emergency declared (2026) · aquifer good (WFD)Kea — Wells refused / chronic stress · 1 well refused · aquifer good (WFD)Kythnos — No cited stress signal · per-island WFD pending · aquifer good (WFD)Syros — No cited stress signal · per-island WFD pending · aquifer over-drawn (WFD)Mykonos — Wells refused / chronic stress · 4 wells refused · aquifer good (WFD)Serifos — Wells refused / chronic stress · 3 wells refused · aquifer good (WFD)Sifnos — Declared water emergency · 1 well refused · 2024 emergency · aquifer good (WFD)Milos — No cited stress signal · per-island WFD pending · aquifer over-drawn (WFD)Antiparos — No cited stress signal · per-island WFD pending · aquifer good (WFD)Paros — Declared water emergency · 10 wells refused · Emergency declared (recurring) · aquifer over-drawn (WFD)Naxos — Declared water emergency · 3 wells refused · 2024: main reservoir dried up · aquifer over-drawn (WFD)Ios — No cited stress signal · per-island WFD pending · aquifer good (WFD)Amorgos — No cited stress signal · per-island WFD pending · aquifer over-drawn (WFD)Folegandros — No cited stress signal · per-island WFD pending · aquifer good (WFD)Thira (Santorini) — Declared water emergency · May 2025: 15 villages cut (desalination failure) · aquifer over-drawn (WFD)Patmos — Wells refused / chronic stress · 1 well refused · aquifer good (WFD)Leros — Declared water emergency · 2024 & 2026: Navy shipped water · aquifer over-drawn (WFD)Kalymnos — No cited stress signal · per-island WFD pending · aquifer over-drawn (WFD)Kos — No cited stress signal · per-island WFD pending · aquifer good (WFD)Astypalaia — Declared water emergency · Emergency declared (2026) · aquifer over-drawn (WFD)Symi — Declared water emergency · Emergency declared (2026) · aquifer good (WFD)Rhodes — Wells refused / chronic stress · aquifer good (WFD)Karpathos — Declared water emergency · Emergency declared (2026) · aquifer good (WFD)Lesvos — No cited stress signal · per-island WFD pending · aquifer over-drawn (WFD)Chios — No cited stress signal · per-island WFD pending · aquifer over-drawn (WFD)Samos — No cited stress signal · per-island WFD pending · aquifer over-drawn (WFD)Ikaria — No cited stress signal · per-island WFD pending · aquifer good (WFD)Limnos — No cited stress signal · per-island WFD pending · aquifer over-drawn (WFD)

29 tracked islandsMarker fill shows only stress we could cite — a declared emergency or a refused well. Grey means no cited event, not a clean bill of health. A red ring marks islands sitting over an over-drawn aquifer (WFD).

Declared water emergency9
Wells refused / chronic stress5
No cited stress signal · per-island WFD pending15
Aquifer over-drawn · WFD13

Hover a marker for the island's citations. Marker size only distinguishes islands with a signal.

Coastline: Natural Earth-derived Greece outline (mainland + islands). Emergencies: civil-protection declarations 2024–26. Refusals: S. Aegean Water Directorate borehole denials, each with an ΑΔΑ on diavgeia.gov.gr. WFD: Aegean Islands (GR14), 114 groundwater bodies, 3rd-cycle RBMP — 23 over-abstracted (quantitative poor), 23 not in good status (ΥΠΕΝ / Ε.Γ.Υ. WFS, layer gr_gwb_greece_2rev). Island rings join each island to bodies named for it (N <island>), worst-case status.

Supply · Attica reservoirs

What Athens has in the bank

ΕΥΔΑΠ's own daily usable reserve across its four reservoirs, 2015–today. The low point of the 2024–25 drought and the 2019 high are marked.
Daily · to 2026-10-13
569 M m³
usable reserve todaySum of the usable (απολήψιμο) volume ΕΥΔΑΠ reports for Μόρνος, Υλίκη, Εύηνος and Μαραθώνας on the latest day.
2026-10-13
+45%
vs a year ago
391 M m³ on 2025-10-13
363 M m³
lowest day on record hereLowest daily total in the window pulled (2015 → today).
2025-11-25
1413 M m³
highest
2019-04-19
353 M707 M1060 M1413 MΜόρνοςΥλίκηΕύηνοςΜαραθώνας363 M · 2025-11-25569 M today201520172019202120232025
Μόρνος368 M m³ todayΥλίκη128 M m³ todayΕύηνος49 M m³ todayΜαραθώνας23 M m³ today

Source: ΕΥΔΑΠ — Αποθέματα Ταμιευτήρων, daily usable volume per reservoir, pulled 2026-10-13; 4,302 days, weekly sampled in the chart. Μόρνος 165 M → 368 M m³ in twelve months.

04

Crete — a worked example at municipality level

The hand-transcribed capacity statements and the Aposelemis gauge date from the 2024–25 drought (sources Oct–Dec 2025); the licence ledger beside them is rebuilt from the warehouse (2026-11-12). Crete municipalities only — not the national totals.

Aposelemis reservoir

Snapshot · 2025-10-18

Serves Heraklion, Hersonissos, and neighbouring municipalities

10%2,604,953 m³ stored
0%full

Red tick = 20% supply-cut alert threshold. Historic low: 1,080,000 m³ (2018). A dated press figure from the 2025 low point, not a live feed — the Attica reservoirs above are the daily series. source

Who holds the licensed water

Ledger · 2026-11-12

Annual ceilings in the Directorate of Waters' use licences, by who applied, 2015–2026. Hotels mostly draw on the ΔΕΥΑ mains and so barely appear here — the hospitality share is boreholes licensed to hotels, not what hotels consume.

Agios Nikolaos (Plaka)12.49 M m³/yr · 544 licences · 11 refused
Viannos12.47 M m³/yr · 284 licences · 3 refused
Faistos (Mesara)27.01 M m³/yr · 699 licences · 54 refused
Hersonissos22.00 M m³/yr · 720 licences · 8 refused
Apokoronas18.64 M m³/yr · 43 licences · 1 refused
Archanes-Asterousia13.99 M m³/yr · 686 licences · 11 refused
Gavdos0.08 M m³/yr · 10 licences · 0 refused
CollectivesFarmsMunicipalHospitalityHouseholdsLivestock

By municipality · capacity statements and the licence ledger (2026-11-12)

MunicipalityRegionStatusRefused m³/dayStatementActs · refusedΔΕΥΑ drought acts

Agios Nikolaos (Plaka)

DEYAN (Agios Nikolaos)

CreteDocumented refusal236.262025-12724 · 116 (2026-03)

Viannos

Municipality of Viannos water service

CreteConstrained—2025-05376 · 3—

Faistos (Mesara)

DEYA Faistos

CreteWater emergency—2025-101,175 · 54—

Hersonissos

DEYA Hersonissos

CreteConstrained—2025-10832 · 8—

Apokoronas

DEYA Apokoronas

CreteConstrained—2016-0762 · 10

Archanes-Asterousia

Municipality of Archanes-Asterousia water service

CreteConstrained—2023-05948 · 11—

Gavdos

Municipality of Gavdos water service

CreteConstrained—2024-0818 · 0—

Attica (Athens metropolitan area)

EYDAP (Athens Water Supply & Sewerage)

AtticaConstrained—2026-10101 · 81 (2026-01)

Karditsa / Lake Plastira

Municipality of Karditsa water service

ThessalyConstrained—2026-1044 · 0108 (2025-07)

Full provenance and per-source verification on the data-source map.