With the landscape of the Lead and Copper Rule Revisions (LCRR) being in such a state of change, MRWA has created this dedicated webpage to share the most up-to-date information available. The content of this webpage will change as new information becomes available. The posts below are posted in the order they are posted (ie: newest posts are on top, older posts are below.) 
 Our goal is to be your go-to resource for accurate and up-to-date information.

Lead Inventory Customer Form Template - December 14, 2022

Below is a template of a form that can be sent to customers to aid in getting information for your system’s lead inventory. Download and customize to fit your system.

Service Line Inventory (Final) (1)

What Public Water Systems Need To Know About the Get the Lead Out of School Drinking Water Act - November 29, 2022

The Missouri Department of Natural Resources is sending this message to help public water systems better understand the requirements of the Get the Lead Out of School Drinking Water Act, which was passed into law this past legislative session and became effective on August 28, 2022. The Department of Health and Senior Services (DHSS) is the agency responsible for implementing the new law, which establishes requirements for schools to:

  • inventory all drinking water outlets
  • develop a plan for testing each outlet
  • provided general information on the health effects of lead in drinking water
  • prioritize early childhood education programs, kindergartens and elementary schools that receive state funding
  • contract with a certified lab
  • perform testing as required
  • provide test results to parents, staff and DHSS
  • install lead removal filters if samples are above 5 parts per billion until remediation is performed to ensure lead levels are below 5 parts per billion.


In a separate budget bill, the legislature also appropriated $27 million in federal funds to help pay for lead testing and remediation required by this new law.


In recent webinars by the Department of Elementary and Secondary Education (DESE) and the DHSS, the agencies recommended schools contact their specific water supplier to determine the levels of lead entering the school’s distribution system. This information will help schools know what to expect when they begin testing. No matter what the entry point lead levels are, schools are still required to test. Although these entry point lead levels may be requested from water systems, water systems are not responsible for performing testing in schools required by the new state law. It is the responsibility of each school to do this testing. This testing program is not a part of the new federal requirements for lead testing in schools required by the Lead and Copper Rule Revisions. Water systems can assist schools in this testing effort if they choose, but it is up to each water system to decide how much assistance to provide or if they want to provide any assistance at all. The Department of Natural Resources has provided a list of certified laboratories to DHSS. This list is on our website at:




EPA Accepting Comments for the Lead and Copper Rule Improvements – Closes Soon

The Environmental Protection Agency (EPA) is currently accepting comments on the Lead and Copper Rule Improvements (LCRI).  This is the rule that will replace most of the Lead and Copper Rule Revisions (LCRR) that became effective on December 16, 2021. There are two separate opportunities to comment.  The first is LCRI federalism consultation.  The purpose of this docket is to collect comments from state and local government officials and their respective intergovernmental organizations on the forthcoming proposed rulemaking.  The second opportunity is focused on environmental justice considerations related to the development of the LCRI.   


To provide comments on EPA’s forthcoming proposed LCRI rulemaking, visit EPA’s website at https://www.regulations.gov/docket/EPA-HQ-OW-2022-0813. This is Docket ID EPA-HQ-OW-2022-0813, titled Public Comments for the Proposed Lead and Copper Rule Improvements UMRA/Federalism Consultations. The comment period closes on Dec. 13, 2022. 


To provide comments on the environmental justice aspects of the LCRI, visit EPA’s website at https://www.regulations.gov/docket/EPA-HQ-OW-2022-0801. This is Docket ID EPA-HQ-OW-2022-0801, titled National Public Drinking Water Regulations: Lead and Copper Rule Improvements. The comment period closes on Nov. 15, 2022. 


Each of the links above will take you directly to EPA’s docket page. Once there, use the tab at the top to select “Browse Documents” and download EPA’s comment memo for the docket which briefly describes the rule and includes specific instructions for commenting. You can conveniently comment online by selecting the “Comment” button under the same tab. You can also read comments submitted by others under the “Browse All Comments” tab.


Small/Medium System & Large System LSLI Spreadsheets
- Updated Links 11-3-2022

Here are updated links to download MoDNR LSLI spreadsheets for small/medium systems and large systems:

Missouri Department of Natural Resources LSL webpage adds LSLI Frequently Asked Questions - Updated 9-19-2022

Click the screenshot below to visit the MoDNR Lead Service Line Inventory FAQ’s page.

Missouri Department of Natural Resources LSL webpage adds Small System Lead Service Line Inventory Spreadsheet - Updated 9-12-2022

Click the screenshot below to download the MoDNR Small System Lead Service Line Inventory spreadsheet.

Missouri Department of Natural Resources LSL webpage

EPA Webinar - August 10, 2022

MoDNR Presentation - February 17, 2022