AquaDoc did a scan-analysis of the Twelve Lakes 'Big Lake' as a representative sample. The only harmful element found was e.coli, which was found in very small amounts, and deemed 'safe' level for swimming and all activities. The official wording from AquaDoc:
Today I received the results of the E.coli sampling. It showed you had a 21 MPN/100mL in the big lake. This is well below the swimming limit of 230 MPN/100mL.
Periodic water testing for E.coli is performed. Keep in mind, the water testing results reflect a moment in time. There is no guarantee the lakes are free of contaminants or bacteria. Twelve Lakes ponds do suffer from occasional microcystin and cyanobacteria issues, noticable when patches of decayed material break away from the bottom and float to the top. These conditions are not condusive for human contact. Our best advice: Swim at your own risk.
If you have any questions or concerns, please contact the HOA using the contact button at the top of the page.