ɪɾ ɪz ɐɡɹˈiːd ɐmˌʌŋ lˈoʊkəl ɹˈɛzᵻdənts ænd pˈɑːnd wˈɜːkɚz ðætðə koʊˈɑːpɚɹətˌɪv sˈɪstəm wʌz ɪstˈæblɪʃt dˈʊɹɹɪŋ ðə tˈaɪm ʌvðɪ ˈɪŋkəz, ɪf nˌɑːt ˈɜːlɪɚ.
It is agreed among local residents and pond workers that the cooperative system was established during the time of the Incas, if not earlier.