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Προμήθεια Χημικών Υλικών Επεξεργασίας Νερού και Λυμάτων για την ΔΕΥΑ Θήβας 2027-2028

ΔΗΜΟΤΙΚΗ ΕΠΙΧΕΙΡΗΣΗ ΥΔΡΕΥΣΗΣ-ΑΠΟΧΕΤΕΥΣΗΣ ΘΗΒΑΣ · Βοιωτία · Published Sep 22, 2026

Where a translation is available, a tender title is shown in English, labelled, with the original one click away. Authority names are shown as their source publishes them, and CPV descriptions in Greek.

Budget: €133,380
Deadline: Oct 29, 2026, 11:00
Procedure: Ανοιχτή διαδικασία
CPV: 24312220-2 · 24327000-2 · 24958200-6

An informational summary. It does not replace the official tender documents. Always confirm the deadline and the terms against the official ΚΗΜΔΗΣ record before submitting a bid.

Bid discount

Work out your bid and its discount on the budget excluding VAT (€133,380.00), and see where it sits among the discounts comparable tenders were awarded at.

The tender documents prevail. This is an indicative comparison with historical ΚΗΜΔΗΣ data, not legal advice.

Discount = 1 − bid ÷ the notice's budget excl. VAT, the same basis as the awards below. It is not the single discount rate of a works bid, which the tender documents apply to their own sub-total.

Award discounts

Same authority · Προμήθειες
0 awards
Fewer than 5 awards: no figure is shown.
CPV 2431… · Προμήθειες · Στερεάς Ελλάδος region
0 awards
Fewer than 5 awards: no figure is shown.
CPV 2431… · Προμήθειες · all of Greece
17 awards · 1 outside -10% to 80%, not counted
Awards from Sep 10, 2026 to Oct 5, 2026
Median
0%
Middle 50%
0% – 0%
Mean
5.3%
Median award amount
€6,475.00
Middle 50% of award amounts
€3,773.40 – €19,051.88
Προμήθειες · all of Greece
4,991 awards · 150 outside -10% to 80%, not counted · 12 framework agreements, not counted
Awards from Aug 5, 2026 to Oct 5, 2026
Median
0%
Middle 50%
0% – 0%
Mean
2.7%
Median award amount
€4,810.00
Middle 50% of award amounts
€1,931.93 – €12,212.00

Award amounts excl. VAT, as the award states them, one per award: a joint award counts its value once, not once per member. Framework agreements are not counted, because their award is a ceiling, not a price.

Spread of discounts · CPV 2431… · Προμήθειες · all of Greece

Discount from -10% to 80%, in 5-point bins; the number of awards above each bar.

Spread of discounts · CPV 2431… · Προμήθειες · all of Greece
Discount	Awards
-10% – -5%	0
-5% – 0%	0
0% – 5%	15
5% – 10%	0
10% – 15%	1
15% – 20%	0
20% – 25%	0
25% – 30%	0
30% – 35%	0
35% – 40%	0
40% – 45%	0
45% – 50%	0
50% – 55%	0
55% – 60%	0
60% – 65%	0
65% – 70%	0
70% – 75%	0
75% – 80%	1

The abnormally-low presumption of art. 88 §5a of Law 4412/2016 covers works, studies and technical services; no line is computed for this category.

ΚΗΜΔΗΣ awards from Oct 6, 2024 to Oct 6, 2026, one per notice, where it has one lot or all its lots were awarded together to one awardee, discount 1 − award ÷ the notice's budget excl. VAT; computed on Oct 6, 2026.

Art. 88 of Law 4412/2016 (§5a added by art. 32 of Law 4782/2021), ΕΑΔΗΣΥ consolidated text · checked 30/09/2026

Details

Contracting authority: ΔΗΜΟΤΙΚΗ ΕΠΙΧΕΙΡΗΣΗ ΥΔΡΕΥΣΗΣ-ΑΠΟΧΕΤΕΥΣΗΣ ΘΗΒΑΣ
ΑΦΜ (VAT no.): 090075565
Excluding VAT: €133,380.00
Including VAT: €155,541.60
Region: Βοιωτία (EL641)
Contract type: Προμήθειες
Record type: Notice
Published: Sep 22, 2026

Clarifications

Statutory answer day for clarifications: 23/10/2026

The day by which the law requires the authority to answer, not a deadline for questions. The tender documents may set a stricter limit for submitting them — send your questions earlier.

The authority answers timely requests by 23/10/2026 — 6 days before the submission deadline (4 in an accelerated procedure: by 25/10/2026). άρθρο 297 §2–3 ν. 4412/2016

The tender documents are not stored here, so the limit for questions set by the tender notice was not read.

The tender notice prevails: check it for the limit on submitting questions.

An indicative calculation, not legal advice.

Calendar days; the deadline day itself is not counted. The statutory day is given as the law counts it, not moved when it falls on a Saturday, Sunday or public holiday.

Provisions checked on 30/09/2026.

Pre-litigation appeal

Appeal against the tender notice until 07/10/2026 άρθρο 361 §1Α ν. 4412/2016

Tender notice, published on ΚΗΜΔΗΣ 22/09/2026 · this pageuntil 07/10/2026

Each amendment of the tender notice opens its own 15-day deadline from its publication on ΚΗΜΔΗΣ.

Appeal fee €666.90 άρθρο 363 §1 ν. 4412/2016

0.5% of the budget excluding VAT, at least €600.00 and at most €15,000.00.

Appeal fee per lot

Lot 1€600.00
Lot 2€600.00
Lot 3€600.00
Lot 4€600.00
Lot 5€600.00

For an appeal concerning only some lots, the fee is computed on their value. άρθρο 363 §2 ν. 4412/2016

The tender documents prevail. This is an indicative calculation, not legal advice.

Calendar days: the day of publication or notification does not count, and the deadline ends at the end of its last day. If that is a Saturday, a Sunday or a public holiday, it ends on the next working day. Local holidays and a moved 1 May holiday are not taken into account. ΑΚ 241 · ΑΕΠΠ 403/2018

Applies to contracts with an estimated value above €30,000.00 excluding VAT, other than direct awards. άρθρο 345 §1 ν. 4412/2016

The provisions were checked on 30/09/2026.

Net amount received

What a contract payment leaves once the contracting authority withholds the statutory deductions and income tax.

The tender documents and the paying authority decide. This is a calculation under the general rules, not tax or legal advice.

Item	Amount
Amount excluding VAT	€133,380.00
Deduction for ΕΑΔΗΣΥ (0.1%)ν. 4412/2016, άρθρο 350 §3, όπως αντικαταστάθηκε με το άρθρο 7 ν. 4912/2022 · 30/09/2026	− €133.38
Income tax withheld (4%) on €133,246.62ν. 4172/2013 (ΚΦΕ), άρθρο 64 §2 · 30/09/2026 ΠΟΛ.1131/25.5.1994 · 30/09/2026	− €5,329.86
Net amount received	€127,916.76

The income tax was withheld under the general rule. The law puts this withholding on «φορείς γενικής κυβέρνησης εκτός από τις κεφαλαιουχικές εταιρείες» (general-government bodies other than capital companies): if the buyer is a capital company it is not made, and the net amount is €133,246.62. The record does not state the buyer's legal form; state it in the field above.ν. 4172/2013 (ΚΦΕ), άρθρο 64 §2 εδ. α΄ · 04/10/2026Codified text as read on www.taxheaven.gr; not read at an official source.

VAT is received on top and paid over, and is not included. The tax withheld is credited against the year's income tax (art. 64 §4 ΚΦΕ).

Rules for a payment on 06/10/2026 · sources checked on 30/09/2026

Basis of calculation

Deductions are computed on the amount excluding VAT. Withholding on goods, fuels and services is computed on the amount after the deductions; on works and on an individual's fees, on the amount excluding VAT. The tender documents may set further deductions, depending on the buyer and the funding.

No tax is withheld when the payment is for electricity, telephone calls, telegrams, stamps, town gas (φωταέριο), water or tickets (case ββ), nor on a purchase of up to €150 without a contract (case αα) or from the suppliers of case δδ. The record is read as such only when every one of its CPV codes is one of these items; otherwise you set it under type of contract.ν. 4172/2013 (ΚΦΕ), άρθρο 64 §2 εδ. β΄ περ. ββ΄ · 03/10/2026

The withholding on goods, fuels and services is owed by «φορείς γενικής κυβέρνησης εκτός από τις κεφαλαιουχικές εταιρείες» (general-government bodies other than capital companies). No record states the buyer's legal form, so you state it; the category the registry states for the buyer can only suggest the answer «No».ν. 4172/2013 (ΚΦΕ), άρθρο 64 §2 εδ. α΄ · 04/10/2026Codified text as read on www.taxheaven.gr; not read at an official source.

Not withheld

Stamp duty 3% and ΟΓΑ 20% on the deductions: not charged on payment orders from 01/12/2024.ν. 5177/2025, άρθρα 1-31 · ΕΑΔΗΣΥ, έγγραφο 3074/31.03.2025 · 30/09/2026
0.02% deduction for the ΕΣΗΔΗΣ system: not charged until the joint ministerial decision of art. 36 §6 ν. 4412/2016 is issued.ν. 4412/2016, άρθρο 376 §18 (άρθρο 25 ν. 5039/2023) · 30/09/2026
Deductions for ΤΣΜΕΔΕ and ΕΜΠ on works payments: abolished in 2016.ν. 4393/2016, άρθρο 2 §6α · ΝΣΚ 129/2019 · 30/09/2026

Guarantee letters

The limits of article 72 of Law 4412/2016 for the participation and performance guarantees, on the estimated value excluding VAT of the lots you bid for.

The contract notice prevails. This computes the law's limits and is not legal advice.

Lots you are bidding forLot 1Προμήθεια εκατόν είκοσι χιλιάδων κιλών (120.000 kg) διαλύματος Υποχλωριώδους Νατρίου (NaClO)€45,600.00Lot 2Δικαίωμα προαίρεσης στο 20% της αξίας της προμήθειας (ως ποσοστό επί τοις εκατό της εκτιμώμενης αξίας της σύμβασης) για για επιπλέον προμήθεια των υπόλοιπων τριών υλικών με ΦΠΑ 24%€13,110.00Lot 3Προμήθεια τριών χιλιάδων πεντακοσίων κιλών (3.500 kg) Κατιονικού πολυηλεκτρολύτη€8,750.00Lot 4Δικαίωμα προαίρεσης στο 20% της αξίας της προμήθειας (ως ποσοστό επί τοις εκατό της εκτιμώμενης αξίας της σύμβασης) για για επιπλέον προμήθεια Υποχλωριώδους Νατρίου (NaClO) με ΦΠΑ 6%€9,120.00Lot 5Προμήθεια εξήντα χιλιάδων κιλών (60.000 kg) κροκιδωτικού υλικού με βάση το αργίλιο (P.Α.C) περιεκτικότητας 10% κ.β. σε Al2O3 και σαράντα χιλιάδων κιλών (40.000 kg) κροκιδωτικού υλικού με βάση το αργίλιο (P.Α.C) περιεκτικότητας 18% κ.β. σε Al2O3€56,800.00

Estimated value excluding VAT of the selected lots: €133,380.00, as published by ΚΗΜΔΗΣ.

The notice declares an option right. The law computes the guarantees without options; if the value ΚΗΜΔΗΣ publishes includes them, the amounts are lower. The value without options is in the contract notice.

Participation guarantee

Maximum (2%): €2,667.60; άρθρο 72 παρ. 1 ν. 4412/2016, όπως αντικαταστάθηκε με το άρθρο 21 ν. 4782/2021 (ΦΕΚ Α' 36/09.03.2021) · 30/09/2026

We have no readable text of the tender documents. The amount is set in the contract notice.

The contracting authority may ask for no participation guarantee in a framework agreement, a dynamic purchasing system, a direct award, or a selection from a catalogue or an electronic catalogue.

Minimum validity of the participation guarantee

At least 30 days after the offer's validity ends, which ΚΗΜΔΗΣ gives as 395 Ημέρες.

That is, until at least 28/12/2027, if the offer's validity runs from the submission deadline (29/10/2026). The contract notice sets where it starts.

άρθρο 72 παρ. 1 ν. 4412/2016, όπως αντικαταστάθηκε με το άρθρο 21 ν. 4782/2021 (ΦΕΚ Α' 36/09.03.2021) · 30/09/2026

Performance guarantee

4% — supplies and services: €5,335.20

Increase in the contract value (€, excluding VAT)An amendment that increases the value takes a supplementary guarantee at the same rate on the increase.

άρθρο 72 παρ. 4 ν. 4412/2016, όπως αντικαταστάθηκε με το άρθρο 21 ν. 4782/2021 (ΦΕΚ Α' 36/09.03.2021) · 30/09/2026

The law was read on 30/09/2026.

Check a guarantee letter's validity (ΤΜΕΔΕ)

Lots

01Προμήθεια εκατόν είκοσι χιλιάδων κιλών (120.000 kg) διαλύματος Υποχλωριώδους Νατρίου (NaClO)Kg€45,600.00
02Δικαίωμα προαίρεσης στο 20% της αξίας της προμήθειας (ως ποσοστό επί τοις εκατό της εκτιμώμενης αξίας της σύμβασης) για για επιπλέον προμήθεια των υπόλοιπων τριών υλικών με ΦΠΑ 24%Τεμάχιο€13,110.00
03Προμήθεια τριών χιλιάδων πεντακοσίων κιλών (3.500 kg) Κατιονικού πολυηλεκτρολύτηKg€8,750.00
04Δικαίωμα προαίρεσης στο 20% της αξίας της προμήθειας (ως ποσοστό επί τοις εκατό της εκτιμώμενης αξίας της σύμβασης) για για επιπλέον προμήθεια Υποχλωριώδους Νατρίου (NaClO) με ΦΠΑ 6%Τεμάχιο€9,120.00
05Προμήθεια εξήντα χιλιάδων κιλών (60.000 kg) κροκιδωτικού υλικού με βάση το αργίλιο (P.Α.C) περιεκτικότητας 10% κ.β. σε Al2O3 και σαράντα χιλιάδων κιλών (40.000 kg) κροκιδωτικού υλικού με βάση το αργίλιο (P.Α.C) περιεκτικότητας 18% κ.β. σε Al2O3Kg€56,800.00

CPV codes

24312220-2Υποχλωριώδες νάτριο
24327000-2Διάφορα χημικά προϊόντα
24958200-6Κροκιδωτικά μέσα

Download the official act (PDF)Tender briefing Calendar (.ics)Save as alert

Contracting authority

ΔΗΜΟΤΙΚΗ ΕΠΙΧΕΙΡΗΣΗ ΥΔΡΕΥΣΗΣ-ΑΠΟΧΕΤΕΥΣΗΣ ΘΗΒΑΣ

Θήβα 322 00

Seat by majority: on 96% of 132 records in the archive, Oct 5, 2026

83 tenders in the last 12 months

Awards: 6
Mean discount: Not computed: 1 award–notice pair, awards Oct 6, 2025 – Oct 6, 2026, fewer than 3. Framework agreements are not counted, because their award is a ceiling, not a price; 0 pairs were left out.
Most frequent contractor: ΛΑΤΩ ΑΤΕ

All tenders by this authority →

Προμήθεια Χημικών Υλικών Επεξεργασίας Νερού και Λυμάτων για την ΔΕΥΑ Θήβας 2027-2028

Bid discount

Award discounts

Spread of discounts · CPV 2431… · Προμήθειες · all of Greece

Details

Clarifications

Pre-litigation appeal

Net amount received

Guarantee letters

Participation guarantee

Minimum validity of the participation guarantee

Performance guarantee

Lots

CPV codes

Contracting authority

Guarantee letters

Participation guarantee

Minimum validity of the participation guarantee

Performance guarantee

Pre-litigation appeal

Clarifications

Documents

Related acts

Bid discount

Award discounts

Spread of discounts · CPV 2431… · Προμήθειες · all of Greece