Municipal Services

Water Quality Control


Nutrilock is a specialty fertilizer for home gardening and landscape use. Nutrilock is an excellent soil additive, providing essential nitrogen and organic material for a healthier soil makeup that will benefit your plants!

Nutrilock biosolids is a byproduct of the wastewater treatment process that has been processed to create a specialty fertilizer. Nutrilock provides nitrogen, potassium, nutrients and metals for plant growth, increased soil organic content, increased moisture holding ability, reduced soil erosion and improved soil texture.

Please call the Turlock Transfer Station at (209) 668-6049 to see if Nutrilock is available at this time.

Due to high demand, Nutrilock may only be picked up by residential customers who pay a City of Turlock utility bill.  Further, customers are limited to one load of Nutrilock per calendar month.  Please provide your most recent City of Turlock utility bill and proof of Identification when you pick up Nutrilock - the utility bill must be for a residential account.

The City of Turlock Municipal Services Department at (209) 668-5590 or send an email to

Attention: In 1998, Stanislaus County prohibited 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.

What is Nutrilock?

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

Nutrilock is composed of 3 parts greenwaste and 1 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 5 times. This composting process combined with previous wastewater treatment processes ensure that Turlock’s finished Nutrilock product meets United States Environmental Protection Agency (USEPA) requirements to be classified as an exceptional quality Biosolids product qualifying it for unrestricted use.

Nutrilock is not only safe for the user and the environment but an excellent addition to the soil. 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.

Likewise 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 ½” layer cultivated into your flowerbed 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! Here’s how…

Where: Turlock Transfer Station, 1100 S. Walnut Rd. 668-6049
When: Monday – Friday, 8 AM – 5 PM Saturday, 8AM – 12PM (No appointment necessary)
Cost: Free-of-charge
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 668-5590

Nutrilock Brochure

Water Quality Control
Contact Us
Water Quality Control
901 S. Walnut
Turlock, CA 95380

Mailing Address:
156 S. Broadway, Ste 270
Turlock, CA 95380-5454

Phone: (209) 668-5590
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