Print Page   |   Contact Us   |   Sign In   |   Register
IAMU Informer
Blog Home All Blogs

Manganese Testing during Sanitary Surveys to start July 1

Posted By IAMU, Wednesday, June 26, 2019

Manganese is a naturally-occurring element in the earth’s geology and is found in the surface and groundwaters of the state at various concentrations. Elevated levels of manganese have long been considered to be an aesthetic problem in drinking water, causing taste, odor, and staining problems. EPA has had an unenforceable, secondary standard of 0.05 mg/L (parts per million) for many years, below which adverse aesthetic effects are not expected to occur. 

Manganese is an essential nutrient in our diet, and too much or too little both have adverse human health effects. There are newer studies that indicate elevated manganese levels can cause adverse human health effects, so EPA has included manganese in the testing required to determine if national regulation as a primary drinking water standard is needed.

This testing, called the Unregulated Contaminant Monitoring Rule #4 (UCMR4), is in its second of three years of national testing. All Iowa public water supply systems serving at least 10,000 people, and a selection of smaller systems, are required to monitor for the contaminants listed in the rule. Manganese is included and must be monitored in the finished drinking water. Once the data is collected and analyzed, EPA will determine whether to regulate any of the listed contaminants as a primary drinking water standard. The data for each specific system required to monitor under UCMR is included in that year’s Consumer Confidence Report, which is available to their customers by July 1st each year.

EPA has developed health advisories for manganese, which includes both acute (immediate) and non-acute (chronic) levels.

  • For bottle-fed infants six months of age and younger, the acute level is 0.3 mg/L, while the acute level for the rest of the population is 1 mg/L, both of which are 10-day advisories. Typically, manganese concentrations in the groundwater are fairly constant, so there isn’t much variation over time.
  • For the entire population, the lifetime health advisory is 0.3 mg/L. 

Health advisories are not enforceable drinking water standards but public notice can be required when levels exceed the health advisory.

For more information on the UCMR, adverse health effects of manganese, and other information, please visit the DNR’s Drinking Water Health Advisories webpage, which includes links to DNR’s Frequently Asked Questions about Manganese in Drinking Water, DNR’s Manganese in Drinking Water Fact Sheet, and other reference material.

In Iowa, the groundwater aquifers are known to contain manganese, with those in the western half of the state testing at higher concentrations in the raw well water monitoring that has been done. Staff in the DNR’s water supply program have been working on developing a response to this emerging contaminant since the UCMR4 testing started, and have been presenting the issues during operator training events. While to-date there have been no samples over the 0.3 mg/L health advisory level in the UCMR4 testing in Iowa, there have been other samples from Iowa PWS that have had elevated manganese levels. Some of these have been in response to colored water complaint investigations. Prior to UCMR4, there has been no required certified lab testing for manganese in finished drinking water, and there is very little data available about Iowa’s systems. 

To obtain more data and get an accurate picture of manganese levels in Iowa’s more than 1,800 public water supply systems, a sampling effort will soon begin.  From July 1, 2019 – June 30, 2022, the DNR inspector will collect a water sample from each source/entry point at each public water supply system during the system’s next sanitary survey.  he source/entry point is a point which is after any treatment and before entering the distribution system, and the sanitary survey is an on-site inspection of the public water supply system that happens at least every three years. For the smallest systems, where certain county sanitarians conduct an annual visit of those systems, the sampling project will start in July 2020.

The sample will be analyzed for manganese through a contract with the State Hygienic Laboratory. Depending upon the analytical result, the system may have no further action, may have additional samples required on a quarterly or annual basis, and, if the health advisory levels are exceeded, will be required to conduct public notification.

On a national basis, 22 states have had systems with manganese levels over 0.3 mg/L in the first 16 months of the UCMR4 testing. 

Tags:  EPA  IDNR  Manganese  Water 

Share |
PermalinkComments (0)

America's Water Infrastructure Act: New Risk Assessment and Emergency Response Plan Requirements

Posted By IAMU, Wednesday, June 5, 2019

Are you aware of the new requirements for community water systems serving a population greater than 3,300?

Check out the new fact sheet to find out more about the requirements to conduct a risk and resilience assessment, update your emergency response plan and certify completion to the U.S. EPA by established deadlines. The fact sheet also provides answers to some of your frequently asked questions.

View the fact sheet here.

Tags:  EPA  Water 

Share |
PermalinkComments (0)

Webinar: Lead Service Line Identification and Replacement

Posted By IAMU, Wednesday, February 27, 2019

In 2019, EPA Office of Ground Water and Drinking Water will host a series of quarterly webinars highlighting challenges and successes in lead service line identification and replacement. The webinar series will showcase how states and public water systems have successfully identified lead service lines and shared that information with the public to raise awareness about the presence of lead service lines in their communities. The series will also focus on the challenges faced by states and public water systems and how they addressed those challenges. 

The first webinar, “Introduction to the Series,” is scheduled for March 7, from 1-2:30 p.m. CT.

The first webinar will include an update from EPA OGWDW on EPA’s lead service line replacement story map, and presentations from Washington State Department of Health – “The Quest for 100% Lead Free – Listening for Lead in Washington State,” and from DC Water - “DC Water’s Service Line Map and Methods to Improve Service Line Inventory”

To register, visit:

Tags:  EPA 

Share |
PermalinkComments (0)

EPA Launches Water Financing Clearinghouse Tool for Communities

Posted By IAMU, Wednesday, August 2, 2017

The U.S. Environmental Protection Agency (EPA) is launching a new web-based portal called the Water Finance Clearinghouse to help communities make informed financing decisions for their drinking water, wastewater, and stormwater infrastructure needs.

The Clearinghouse includes a searchable database with more than $10 billion in water funding sources and more than 550 resources to support local water infrastructure projects.

The Water Finance Clearinghouse gives local decision makers an opportunity to search for available funding sources for water infrastructure as well as resources (such as reports, webpages, and webinars) on financing mechanisms and approaches that can help communities access capital to meet their water infrastructure needs. State, federal, local, and foundation funding sources and resources on public-private partnerships, asset management practices, revenue models, and affordability approaches are included in the Clearinghouse.

For more information on the Clearinghouse, click here.

To register for a webinar about how to use the Clearinghouse, click here.

Tags:  EPA  Water  Water Finance Clearinghouse 

Share |
PermalinkComments (0)

Water Efficiency "Best Practices" for Water Suppliers Developed by EPA

Posted By IAMU, Tuesday, January 3, 2017

From EPA’s Water Headlines, 12/22/2016

“As population grows and water resources become stressed, water utilities may look to expand their water supplies through construction of new reservoirs, increased withdrawals from lakes and rivers, or increased pumping of groundwater. Before using alternative supplies, utilities should consider if they are making the best use of the supplies already under their control.

EPA has released a document that describes best practices and targets for well-managed water supply systems that control water loss, incentivize conservation, and manage demand. EPA has developed the best practices document to help water utilities and federal and state governments carry out assessments of the potential for future water conservation and efficiency savings to avoid or minimize the need for new water supply development. The document can also be used by a utility or a third party to conduct assessments of how the utility is managing its water resources from a technical, financial, and managerial perspective.”

For more information, click here.

Tags:  EPA  Water  Water Efficiency 

Share |
PermalinkComments (0)
Page 1 of 3
1  |  2  |  3
Membership Software Powered by YourMembership  ::  Legal