What's in Slidell city core water

Slidell, St. Tammany Parish · PWS ID LA1103041

The short answer

Slidell city core water is soft, 0.2 to 0.3 grains per gallon, chloramine-disinfected groundwater. The recommendation for this water: a whole-home catalytic carbon filter plus optional reverse osmosis at the kitchen sink.

Chloramine is easier to miss than chlorine because its smell is less obvious. Slidell city core water carries chloramine at 1.8 parts per million, and it tests soft, with hardness 4 to 5 milligrams per liter, or 0.2 to 0.3 grains per gallon. For perspective, chloramine in drinking water typically runs from 0.5 to 2 parts per million. At 1.8 parts per million, this system is near the high end of that range. Unless a pitcher or refrigerator filter specifically lists chloramine reduction, do not assume it removes it.

Chloramine is easier to miss than chlorine because its smell is less obvious. 3 grains per gallon.

Why this is the recommendation

What you may notice in your waterBeneath the surfaceWhat gets your attention?

Why it is easy to miss

Chloramine can be present without a strong smell

The report confirms chloramine in this water even if you do not notice the obvious pool smell associated with chlorine. Ordinary pitcher and refrigerator filters should not be assumed to reduce it unless chloramine is specifically listed.

A faint chemical taste or odor, or no obvious warning at all
Skin that feels tight or dry afterward
Hair that feels dry or harder to manage
Water, coffee, or tea that tastes off

What Slidell city core reports

More than one number matters

chloramine at 1.8 ppm, near the high end of the typical 0.5 to 2 ppm range
hardness at 0.2 to 0.3 grains per gallon

Source: Slidell Water Supply (City of Slidell) · 2025 water quality report · PWS ID LA1103041

What this report does not rule out

PFAS cannot be seen, smelled, or tasted

This report does not include a usable PFAS result. No result is not the same as no PFAS. Certified kitchen reverse osmosis reduces PFOA and PFOS in the water used for drinking and cooking.

Your water report

Your water reportSlidell city core

Slidell Water Supply (City of Slidell) · PWS ID LA1103041 · 2025 water quality report

chloramine at 1.8 ppm, near the high end of the typical 0.5 to 2 ppm range · Made to last longer and often less noticeable than chlorineCatalytic carbon removes it throughout the house

hardness at 0.2 to 0.3 grains per gallon · Already soft water, with no hardness problem to treatNo softener recommended

Chloramine is made by combining chlorine with ammonia. It lasts longer than chlorine and can be much less obvious at the tap. Everything here is published data for this water. The recommendation follows from it.

What we'd install

Based on the report, whole-home catalytic carbon for the chloramine at every tap. Reverse osmosis at the kitchen sink is optional, for drinking water and coffee. The whole-house recommendation remains the catalytic-carbon system either way.

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What this does for your home

Reduces chloramine throughout the house, including showers and the water used for coffee, tea, and cooking
No unnecessary softener for water that already tests soft
Filtered drinking water from its own kitchen faucet

Cutaway of a water heater with sediment settled at the bottom

Easier on the parts that wear out

Sediment settles in your water heater and lowers its efficiency, and chlorine and chloramine embrittle the rubber seals, gaskets, and hoses inside your appliances over time. Filtering the whole house is gentler on all of it.

U.S. Dept. of Energy Energy Saver; ASTM D6284.

Source: Slidell Water Supply (City of Slidell) annual water quality report. PWS ID LA1103041, verifiable in the EPA Safe Drinking Water database →Figures are as published by the system; see the original report for sampling methods and ranges.The published report reviewed for this page does not include a usable PFAS result, so this page does not claim that PFAS are present at this address.Get my written plan and price →

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The public recordResolved coliform violation on record

EPA lists a Total Coliform Rule violation for the Slidell system in September 2022, resolved after about two weeks. Coliform bacteria are an indicator the state monitors as a sign that other contamination could get in. The system shows no open violations today.

EPA ECHO. Public records, current as of August 2026. They update quarterly. Operators: contact us to correct an error.

What this means at your house

Your water arrives with chloramine in it, at 1.8 parts per million. Utilities make chloramine by combining chlorine with ammonia so it remains effective farther through the distribution system. It can be less obvious than chlorine: some people notice a faint chemical taste or odor, while others notice nothing at all. Ordinary pitcher and refrigerator filters should not be assumed to reduce it unless chloramine is specifically listed. Catalytic carbon reduces it before the water reaches the house.

This is soft water. The published hardness is 4 to 5 milligrams per liter, or 0.2 to 0.3 grains per gallon. A softener has no meaningful hardness problem to solve here.

The water here is groundwater, pumped from seven wells in the Southern Hills aquifer.

How the report becomes the recommendation

Each finding decides a piece of the package, including the pieces we leave out.

The report shows	At your house	The answer	Why that one
Chloramine at 1.8 ppm	The taste and smell in coffee, tea, and the first glass of the day	Whole-home catalytic carbon	Chloramine holds together inside plain carbon. Catalytic carbon is processed to break it apart.
Hardness at 0.2 to 0.3 grains per gallon, soft	No scale problem to fix	No softener	The resin would have nothing to grab, so it stays out of the quote.

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Tell us your address and we will pull the report for the water system that serves it. You get our recommendation and the price in writing before any work starts, and a licensed plumber handles the install.

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Nearby in Slidell

← All neighborhood water reports

It cannot say what is causing dry skin at your house. Hot water, soap, weather, and the disinfectant can all contribute, and the report only establishes that the disinfectant is present.

It cannot speak for the pipes inside your own walls. Lead sampling covers a handful of homes across the whole system, and your service line, solder, and fixtures are yours alone.

It says nothing about sediment at your particular faucet; annual reports do not measure what collects in one house.

Before anything goes on a quote, we ask what you are actually noticing and test whatever the published data cannot answer.