Manganese in Connecticut Drinking Water
By Alexander Snyder, Founder & Water Quality Data Lead
The EPA secondary (aesthetic) standard for Manganese is 50 ppb, but the health-protective reference published by EWG is 100 ppb.
Manganese is listed in preserved public-system records associated with 60 Connecticut ZIP codes. This page summarizes record coverage and governed reference values. It does not establish that manganese is present at a property, identify its serving utility, or determine exposure, safety, or health risk.
What Is Manganese?
Manganese is a naturally occurring element found in food and drinking water. Excess exposure is associated with harm to the brain and nervous system, with children's attention, memory, and intellectual capacity of particular concern.
Review Manganese Records Near You
Enter a Connecticut ZIP code to review associated public-system or regional monitoring records. The lookup does not identify the serving utility or measure a property.
Check Your ZIP CodeHealth Effects of Manganese
- Brain And Behavioral Effects
These are source-classified outcomes in the exact EWG release, not a diagnosis, exposure determination, or finding about a property. See the cited reference below.
Safety Guidelines
Health Guideline
100 ppb
Source: EWG
Secondary Standard
50 ppb
EPA Secondary Standard — aesthetic (taste, odor, staining), not federally enforceable
A legal or regulatory value and a health-protective reference answer different questions; both are shown without treating EPA compliance as the definition of healthy.
| Standard | Level | Source |
|---|---|---|
| EPA secondary (aesthetic) standard | 50 ppb | EPA — legal/regulatory context |
| Health-protective reference | 100 ppb | EWG |
Who May Need Closer Review?
The governed EWG release classifies the following household groups as priorities for manganese context. This classification does not lower or multiply the cited reference and does not determine anyone's exposure.
Confirm the serving utility and use a certified property sample before making a health, exposure, or treatment decision.
Reading this inside ChatGPT or Claude?
This page can explain the general science about Manganese records associated with a ZIP, but it cannot identify what is at a specific tap or property. You can get ZIP-level context two ways:
- Inside the chat: ask your assistant to “check my tap water with CheckYourTap”. Our connector returns available public-system or regional monitoring records associated with your ZIP. It does not identify your serving utility or test your tap, well, or property. The current connector is read-only and does not email reports or submit contact information.
- On the web: open CheckYourTap.com and enter your ZIP code for a free ZIP-level report.
Need to confirm Manganese at a property?
A certified sample from the relevant tap or well can establish whether manganese is present before any health, filtration, or treatment decision.
CheckYourTap is an independent water-quality service, not your town or utility. We connect you with a vetted local partner. Your online report is free. Testing and treatment are paid services, and there's no cost to talk.
Have a dog or cat?
Read the source-linked veterinary context for Manganese. These pages do not turn a human guideline into a pet-safe number or claim that a ZIP record describes your pet's water.
Frequently Asked Questions
Is Manganese in my tap water?▾
What reference values are shown for Manganese?▾
Related Contaminants
Check Water Quality by ZIP Code
Sources
The exact released health reference and the reviewed sources for this definition are listed below:
About This Report
This page restores the preserved Connecticut route and historical public-record catalog. It does not publish the catalog’s old percentages or promote its stored threshold fields. Exact released health references come from EWG or California OEHHA; EPA material is legal, regulatory, and source context. CheckYourTap is an independent water-quality service funded by Valiant Energy Solutions, a Connecticut water quality and energy services company established in 1930.
This report is general information, not medical advice or a substitute for certified laboratory testing. Talk to your pediatrician or physician about specific health concerns.
Unmatched analytes remain visible without a numeric health verdict. Last reviewed August 2026.