Des Moines Register
The Des Moines metro is under its first-ever lawn watering ban, and residents may have questions on how this applies to them.
Central Iowa Water Works — the Des Moines region's water authority — on June 12 banned its 600,000 commercial and residential customers from watering their lawns, effective immediately and until further notice, as high levels of nitrate pollutants in the Raccoon and Des Moines rivers threatened to outstrip its treatment capabilities.
Customers who repeatedly violate the ban could face losing their water service, officials said.
Here's what we know about the ban.
Why can't I water my lawn?
Federal drinking water regulations limit nitrate content in drinking water to 10 milligrams per liter for health reasons, and Water Works' equipment for removing it already is operating at capacity.
So the regional water authority is limiting the amount of water it has to process, to ensure that treatment facilities can produce enough water for essential uses, at acceptable nitrate levels.
"Irrigation of lawns is by far the largest source of increased demand in summer, sometimes doubling the amount of water drawn from the system," according to a post from the city of Waukee.
Consuming water with high levels of nitrates is associated with infant asphyxia, known as blue baby syndrome, and even lower levels of nitrates have been linked to cancer.
For now, treated drinking water continues to meet all state and federal regulations for drinking and household uses, the regional water authority said.
Who does the Central Iowa lawn watering ban affect?
The ban affects all Central Iowa Water Works members: the cities of Ankeny, Clive, Grimes, Johnston, Norwalk, Polk City, Waukee; unincorporated Polk County; all Des Moines Water Works customers including residents of Des Moines, Alleman, Berwick, Bondurant, Cumming, Pleasant Hill, Runnells and Windsor Heights; the Urbandale Water Utility; the Warren Rural Water District; West Des Moines Water Works; and Xenia Rural Water.
Can I water my garden?
People watering gardens or flowers should do so with a hand-held container and not use a sprinkler or run water through a hose.
Waukee also advised residents to use leftover water from half-full drinking glasses or rinsing produce to water potted plants.
Can I wash my car in my driveway?
Regional water authorities asked customers to avoid washing cars.
Can I fill my pool?
Regional water authorities asked customers to avoid filling pools. They also advise skipping outdoor water play for kids.
What other ways can I help to reduce water use?
Regional water authorities have asked that customers repair leaky faucets, hoses or toilets, run only full loads in washers and dishwashers, and take shorter showers.
How will cities enforce this?
Members of Central Iowa Water Works, made up of cities and local water providers, will enforce the ban based on their rules.
Customers of Des Moines Water Works, the largest member of CIWW, who irrigate in violation of the ban will be notified via a tag left at their property, according to the city of Des Moines. If they don't stop watering within 48 hours, their water service may be terminated, according to the post.
Des Moines Water Works has set up a dedicated phone line to report violations: 515-323-6247. Residents can report violations by emailing a photo and address to [email protected].
Waukee spokesperson Heather Behrens said the city will be monitoring meter usage. People can also report concerns to the Public Works Department.
In many regions of the country, watering bans enforced with fines are a routine part of summer, especially in Sunbelt states like Texas, Florida, Arizona and California.
What's next?
The ban is in place until nitrate levels go down.
If conditions were to worsen, the next possible step would be to ration water.
"But that's not even on the radar," said Tami Madsen, Central Iowa Water Works executive director. "If we all work together, and get through the next few weeks, we won't even have to have that discussion."
This story will be updated with more information as it becomes available.
Phillip Sitter covers the suburbs for the Des Moines Register. Phillip can be reached via email at [email protected]. Find outmore about him online in the Register's staff directory.