Where does groundwater come from? Can you say, ‘Hydrologic Cycle?’

This USGS diagram shows the Hydrologic Cycle. If you want to know where the groundwater in McHenry comes from,
look here.

Where does groundwater come from? The obvious answer is ‘from the ground.’ But, where does the ground get it? That well out behind your Bull Valley home extends down into the ground and pumps groundwater up so you and your family can use it. It would be nice to know where the groundwater comes from, wouldn’t it?

The first thing to know is that the groundwater is there as part of the hydrologic cycle. Assuming you haven’t remembered all the particulars from your 5th-grade lesson, that cycle works like this:

THE HYDROLOGIC CYCLE

1. Evaporation: the water in lakes, rivers, oceans and on the surface of the ground is evaporated into the air …
2. Where it condenses to form clouds.
3. While trapped in the clouds, it moves with the wind.
4. Then, the moisture returns to the earth in the form of precipitation: rain, sleet, snow
5. A portion of the water runs off back into lakes, rivers, and oceans – another portion seeps into the ground. Through gravity, much of this water goes lower and lower until it reaches an area that is resting on an impervious surface.
6. When that area is saturated, your well has the ability to gather portions of the water and pump them back to the surface and through the pipes into your home.

Keep in mind that water can also move in the ground through aquifers. Governments have come to recognize the importance of aquifers. You can even look up a map of aquifers in the area called the “McHenry County Sensitive Aquifer Recharge Areas.”

This map shows areas in two shades of green where aquifers are considered sensitive. On that map, you’ll find that much of Bull Valley is covered by dark green – the most sensitive areas of the map.

This means that groundwater is moving under your feet. Your well’s job is to catch portions of the groundwater and pump them up into your Bull Valley home.

What are you putting down your McHenry County drain?

Consultant raises the alarm about contaminants in our drinking water supply

What is in the well water you drink? The number of
potential contaminants are alarming.

Recently, John Matthesius attended an event for well-maintenance technicians in Nashville. What he heard at one of the break-out sessions was alarming. It has to do with the quality of the water we drink, including the water we drink here in McHenry County.

The presentation was given by Peter S. Cartwright of Cartwright Consulting from Minneapolis, MN, who points out that an almost limitless number of contaminants are going into our water supply – into the water we drink.

As Cartwright points out, “Every time water goes down the drain, whether to a sewer, a septic system, a storm drain, or wherever, it carries contaminants with it, which usually end up in someone’s drinking water.”

He said the list of contaminants in our drinking water include “unmetabolized pharmaceuticals” and other chemicals. When we wash our hands, the soap and dirt, or whatever was on our hands, goes down the drain. He said there are more than 85,000 chemicals that make their way into our water supply.

He described how “the average adult uses nine products per day containing 126 different chemicals.” In the farms, they add fertilizer to the soil that then makes its way into our water supply. Whatever we put down the drain tends to make its way to our water supply.

Manufacturing contributes to the toxic recipe in our drinking water. For instance, plastic, with 300-million tons of plastic manufactured each year, is a major contributor to toxins in our drinking water.

Cartwright sites a 2008 Canadian study that found that, in 20 industrialized nations, birthrates for boys has dropped, as a result, for each of the last 30 years, there has been a 200-percent increase in abnormalities to male sex organs, sperm count among North American college students has dropped by 50 percent over the course of the last 50 years, 85 percent of sperm in healthy males has damaged DNA and testicular cancer is up 300 percent in that same 50-year period.

The address the concerns, Cartwright recommends legislative activity and water treatment technologies. But, he also says that individuals can make a difference. He refers to personal stewardship where people are more conscious of what they are putting down the drain in their homes and workplace. In that regard, education is essential (Cartwright’s thesis is available in its entirety by following this link or visiting the McHenry Water Well & Pump blog page).

The Next Drinking Water Contamination Issue: By Peter S Cartwright, PE

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