What's turning the water green in Sienna Plantation?

MISSOURI CITY, TX (KTRK) -- There's something in the water in Sienna Plantation. It's a mystery right now that not even the city can answer -- what is making the water green?

When Jason Giles was filling up his bathtub, he didn't exactly notice the green water right away.

He is color blind.

"I typically write off things when I see that they are a different color because I'm colorblind," he said. "But when I ran the bath last night, I noticed it was a different shade."

You would only see the discoloration if you're taking a bath. The yellow, greenish hue becomes noticeable after a few inches have filled up.

Shower water comes out clear, which is why it took the Giles so long to notice.

Other neighbors in Sienna Plantation in Missouri City say they've had the same problem for several days now.

"My wife noticed it last night but she thought maybe the kids might have put soap in the water," said Sienna Plantation resident Ted Borel. "But upon doing it this morning, I just had my tub cleaned out, I noticed it's still green."

Families there have expressed concerns over possible rashes and illnesses. And though the water is clouded at times, the city says there is no health risk.

A spokesperson with the city of Missouri City Regional Surface Water plant, which provides water to Sienna Plantation, released the following statement.