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Weld County Residents Improving
Water Quality from Their Own Backyards

Man Watering Flowers

Each one of us in Weld County has the opportunity to make a big difference in protecting the water supply which will help ensure a higher quality of life today and for years to come.

Many common stormwater pollutants are located right outside your home. Some simple, smart choices will help prevent these pollutants from draining into our water supply while ensuring a healthier home and saving you money.

Ways You Can Prevent Stormwater Pollution From Home :

Pick up after your pet:


Bacteria naturally exist in our local waterways, but when concentrations become too high, it can threaten human and animal health. Contrary to popular belief, pet waste does not fertilize the yard but instead creates an unnecessary bacterial hazard. Simply pick up your pet waste and throw it in the trash where it won't get washed away into with the stormwater.

Read the labels on your fertilizer and herbicide:

Household ChemicalMake sure to apply the manufacturer’s recommended amount of fertilizer; you may find you need less than expected. Also, try not to apply chemicals or fertilizers before a big storm since they will get washed away by the stormwater. The nutrients in fertilizer can turn ponds and streams bright green with algae, harming the aquatic life below. Properly applying these products will help prevent unwanted chemicals and nutrients getting into the water and also keep some extra money in your pocket.

Maintaining your vehicle at home:

Motor Oil

Many homeowners choose to service their vehicles at home, which is an excellent way to reduce maintenance costs and ensure reliable performance of your vehicle. However, fluids such as motor oil, brake fluid, steering fluid, transmission fluid, and antifreeze can contaminate stormwater if spilled or improperly stored. Keep these fluids in a storage shed or garage, and take advantage of local recycling facilities.

Consider using a commercial car wash:

Washing CarSoaps, detergents, heavy metals and chemical residues frequently enter storm drainage systems from the simple act of washing vehicles at home. If possible, try washing vehicles over gravel or grass, and turn the water off while not in use. Commercial car washes are a great alternative because they collect the wash water and send it to a water treatment facility. 

Properly dispose of household hazardous waste:

Household CleanerMany household products are considered hazardous and should be disposed of properly. Some of these products include household cleaners, flammable liquids, pesticides, herbicides, batteries, vehicle fluids, fluorescent light bulbs, paints and stains. Weld County offers Household Hazardous Waste (HHW) Facilities to help residents easily dispose of these products. For more information, click here.

Have your septic system checked:

Septic SystemInspect your septic system every three years, and have it  pumped as necessary. Be conscious of what materials are being flushed into your system, as some may affect the bacteriological processes that are necessary for septic systems to function properly. For more information on Weld County’s septic system program, click here.

The Weld County MS4 Program manages only unincorporated areas of the County. If you live within a city, make sure to check your local government’s website for a stormwater management program in your area.


Lyndsay Holbrook
MS4 Administrator

Phone: (970) 400-3788

Public Works Department

1111 H Street
P.O. Box 758
Greeley, CO 80632

Phone: (970) 400-3750
Fax: (970) 304-6497