Welcome to the Latest Data page

We simplified the layout so you can find public data and other information easier. After uploading your water quality data to our website with the Monitoring Form, you can see your results in the database below.

All data are public and updated in real time. If you see an issue or need help with your data, feel free to contact us at lawmerallarm@gmail.com.





We use Google Spreadsheets to see all uploaded data, prescribed action, and statistics graphs. Concept definitions are provided, but if you need help, feel free to contact us.



Conductivity and Total Dissolved Solids

The United States Environmental Protection Agency (USEPA) has set secondary standards for drinking water that include maximum concentration limits (MCLs) for certain water constituents. The MCL for Total Dissolved Solids (TDS) is 500 mg/L. While our current testing involves only surface water samples, drinking water standards cannot be applied here. Although, this is still a good foundation to compare our field data upon. The graph below provides an overall view of our samples and the TDS compared to EPA's MCL.




Sample pH and Maximum Concentration Limits

Another USEPA secondary standard is pH, and for drinking water the USEPA recommends a pH of 6.5 - 8.5. There are many cases in natural settings in which the water pH is outside of this range. Water outside of this MCL range may cause corrosion in piping infrastructure. In the environment, water pH can have a great effect on the presence of aquatic life.



What is pH of Water?


The pH of water is a measure of its acidity or alkalinity. When we measure pH, we are measuring the concentration of hydrogen ions (H+) in the water. These measurements can be understood in the pH scale, which ranges from 0 to 14. A lower pH (0 - 6) indicates a high concentration of H+ ions and a more acidic water source. If a water source has a high pH (8.0 - 14.0) it is said to be basic, or alkaline, and contains much fewer H+ ions. On the pH scale, 7.0 indicates neutral pure water but having a pH of 7.0 is rare in nature.

Because water sources also contain naturally dissolved solids, its pH varies. Most biologic process can survive in the 6.0 - 8.0 pH range. This scale is logarithmic and one step, say from pH of 7.0 to 6.0, would represent a ten-fold increase in acidity. Water with a pH of 2.0 is 100 times more acidic than a pH of 4.0.

What happens when the pH changes?


The pH of a water resource can change naturally. Plants release carbon dioxide when the die and decompose in water. When the carbon dioxide combines with water, it forms weak acid known as carbonic acid and this decreases the water pH. Types of soil and minerals like limestone can help neutralize acidity. In terms of human activity, releasing large quantities of nitrogen and sulfur oxides from power plants and transportation vehicles can mix with water vapor and result in acid rain.

When water pH changes outside the biologically preferred 6.5 - 8.5 region, harmful and even fatal affects can be seen on the environment. Many aquatic species are very sensitive to subtle changes in pH. These species are usually good indicators of chemical changes in the environmental. Other species are more adapted and can handle wider ranges of change.