Water Sewer & Garbage Service
Menu Button
City Logo
Search Button

Nutrilock Soil Amendment

What is Nutrilock?

Nutrilock is a complete specialty co-compost product that consists of greenwaste from community landscaping and biosolids, a byproduct of the wastewater treatment process.

Nutrilock is composed of three parts greenwaste and one part biosolids. Once combined, the Nutrilock mixture is windrow composted to a temperature of 130° for a minimum of 15 days. During this time the windrow is turned a minimum of five times. This composting process combined with previous wastewater treatment processes ensure that Nutrilock meets the United States Environmental Protection Agency’s (USEPA) requirements to be considered a Class A ”exceptional quality” Biosolids product, qualifying it for unrestricted use.

Nutrilock is an excellent soil amendment that is safe for both the user and the environment. In addition to providing readily available and long-lasting nitrogen for plant growth, it also provides trace elements needed for healthy plants and organic material for a healthier soil makeup.

Using Nutrilock will not only create healthier and lusher plants, flowers and lawns, but will also add to their longevity.

Applying Nutrilock

As with other composts, Nutrilock should be used gradually with several light applications rather than one large application.

Just as with other composts, over-application or misuse may result in damage to your lawn and or plants. Consequently, the City of Turlock cannot be held responsible for any damages incurred. Always remember to wash your hands after applying Nutrilock or any compost material.

Nutrilock and Lawns

For new lawn areas a 1/2 to 1” layer of Nutrilock should be spread evenly over the area to be seeded and tilled between 2 and 6” deep into the soil. Apply grass seed as instructed by the manufacturer. Nutrilock retains water very well so be careful not to over-water.

Existing lawn areas can be rejuvenated with Nutrilock as well. Prior to application be sure to mow your lawn very low. Evenly spread a ¼” or less of Nutrilock and use a rake to distribute evenly. Remember, Nutrilock helps retain water. Don’t be surprised if you use less water than before.

Applying Nutrilock to your lawn once in the spring and once in the fall should be all you need for a healthy and attractive lawn.

Nutrilock and Flowers

Grow your best and most colorful flowers and plants ever with the addition of Nutrilock when you plant.

Both annual and perennial flowering plants will show the long lasting benefits caused by the slow release of nutrients provided by Nutrilock.

Usually a 1/2" layer cultivated into the soil will be sufficient to enrich your flowerbed for a whole year. Using the same application will also enhance spring blooming bulbs and plants. Any season the soil can be worked is the right time to add Nutrilock.

Where Can I Find Nutrilock?

Picking up your own Nutrilock is convenient!


Turlock Transfer Station
1100 S. Walnut
(209) 668-6049


Monday – Friday, 8AM –5PM Saturday, 8AM –12PM No appointment necessary



What Else?

Stop at the scale house to sign in and weigh both in and out.

Prepare to help yourself as Nutrilock pick up is self serve.

For more information, call Municipal Services at (209) 668-5590.

Unincorporated Areas

In 1998, Stanislaus County adopted an ordinance (#cs-681) that prohibits the use of biosolids related materials in unincorporated areas of Stanislaus County unless it is bagged and purchased through a retail outlet. Although the City is not prevented from distributing its Nutrilock product, the end user could be in violation of this ordinance if they use it on property in the unincorporated areas of Stanislaus County.

For more information about Nutrilock, please contact:

Municipal Services
156 S. Broadway, Ste 270
Turlock, CA 95380
(209) 668-5590
Monday - Friday, 8AM - 5PM

Million Acts of Kindness

Icons made by Freepik from www.flaticon.com is licensed by CC 3.0 BY