Sign up for FlowVella
Sign up with FacebookAlready have an account? Sign in now
By registering you are agreeing to our
Terms of Service
Loading Flow
Downloading Image /
Downloading Image /
2
Untreated or poorly treated sewage in cities can be low in dissolved oxygen and high in pollutants such as fecal coliform bacteria, nitrates, phosphorus, chemicals, and other bacteria. Treated sewage can still be high in nitrates.
Downloading Image /
Downloading Image /
Downloading Image /
Downloading Image /
Downloading Image /
Downloading Image /
Downloading Image /
Downloading Image /
Downloading Image /
FlowVella, Previously Known As Flowboard
© 2025 FlowVella
FlowVella
