Commitments and contingencies (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Contingencies
Employment Agreement Base Annual Salaries	$ 5.5
Cayman Water Retail Operations, Percentage Of Revenue	17.00%	27.00%
Cayman Water Retail Operations, Percentage Of Gross Profit	26.00%	44.00%
Long-term Purchase Commitment, Amount	$ 16.6
Consolidated Water Bahamas [Member]
Contingencies
Percentage of delinquent account receivables	80.00%	65.00%
WSC [Member]
Contingencies
Accounts Receivable, Net	$ 26.9	$ 16.3

Represents the percentage of consolidated gross profit from Cayman Water retail operations.

No definition available.

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Namespace Prefix:	cwco_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of consolidated revenue from Cayman Water retail operations.

+ References

No definition available.

+ Details

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Namespace Prefix:	cwco_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

+ References

No definition available.

+ Details

Name:	cwco_CommitmentsAndContingenciesLineItems
Namespace Prefix:	cwco_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the base annual salary amount, under the employment agreement.

+ References

No definition available.

+ Details

Name:	cwco_EmploymentAgreementBaseAnnualSalaries
Namespace Prefix:	cwco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of delinquent account receivable balanc.e

+ References

No definition available.

+ Details

Name:	cwco_PercentageOfDelinquentAccountsReceivableBalance
Namespace Prefix:	cwco_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480833/946-310-45-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(5)(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 310
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481058/954-310-45-1

+ Details

Name:	us-gaap_AccountsReceivableNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	srt_ConsolidatedEntitiesAxis=cwco_ConsolidatedWaterBahamasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_MajorCustomersAxis=cwco_WSCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: