NORWALK -- Officials in Norwalk say its drinking water is safe as they battle a harmful algal bloom in a reservoir.
The Sandusky Register reports that test results released Tuesday for the body of water in Norwalk showed 22 parts per billion of microcystin toxin, up from an initial result of 10 parts per billion.
The city's public works director Josh Snyder says the EPA's limit for recreational use is 6 parts per billion.
Norwalk doesn't draw drinking water from the Upper Reservoir, but residents are being warned not to let pets drink from it.
Snyder says the city's treated water hasn't shown any algal toxins.
Earlier this month, toxins from algae in Lake Erie left about 400,000 people in Toledo without clean tap water for several days.