Water quality

Rivers, oceans, lakes, aquifers, groundwater, stormwater, urban canals, underground streams, estuaries, and more -- we are passionate about water quality! This page will help you find resources to explore the waterbodies you care about, and connect with other people who have the same interests: ### Questions on Water Quality: [questions:water-quality] **** ## Monitoring * [Water sampling](/water-sampling) * [Water sensors](/water-sensors) * Posts on #water-monitoring * Posts on #water-testing * Posts on #reagents ## Water quality parameters Read about different water quality parameters here, including pH, nitrogen, conductivity, temperature, ORP and turbidity: * https://publiclab.org/common-water-contaminants Also see this overview of 7 ways to monitorn water quality: * https://publiclab.org/notes/anngneal/12-08-2017/7-ways-to-measure-monitor-and-evaluate-water-quality ## Groups and projects working on water quality issues: [wikis:project:water-quality] **** ## Water quality related pages [wikis:parent:water-quality] **** ## Activities [activities:water-quality]...

Author Comment Last activity Moderation
imvec "Just noticed this jeff! Awesome! " | Read more » 3 days ago
keansargent "Hi, guys! Do you know, that companies all over the world are in need of highly qualified professionals who are eager to use cutting-edge technologi..." | Read more » 13 days ago
alejobonifacio "Reading a little more I found that you could change the frequency of the PWM in arduino. I did not try to do this. " | Read more » about 1 month ago
alejobonifacio "Hi! good question! The frequency of PWM of arduino is about 500hz. Is that enough for conductivity measurement? " | Read more » about 1 month ago
infowavex9 "It is the technology of automatically collecting consumption, diagnostic, and status data from water meters. Wavex coin Wavex is a US-based Coin th..." | Read more » about 1 month ago
TomZ "I finally joined Public Lab! I've been adding youtube videos on building an inexpensive (<$20) lensless holographic microscope (<4um resoluti..." | Read more » about 1 month ago
michelleiL "Hi @kgradow1, thank you for sharing all this info on how to read EIS. I'm wondering if you have info on what are the stages of an EIS? For example..." | Read more » about 2 months ago
JasmineKurb "Wow, This is amazing. Science is completely based on experiments. If you are staying science then you should know how to do experiments and you mus..." | Read more » about 2 months ago
Fleer "@hspencer22 Great news that you are working with Marc Glass--his group is excellent. Please reach out to CAES if we can help with anything else. Th..." | Read more » 2 months ago
Ag8n "The conductivity cell should take the place of Rx. So disconnect the conductivity cell, disconnect Rx, leave the one of the conductivity cell conn..." | Read more » 3 months ago
alejobonifacio "Thanks @Ag8n for the explanation! I am learning a lot! :nerd_face: " | Read more » 3 months ago
alejobonifacio "Hi @Ag8n! What you suggest sounds interesting. Would it be something similar to the attached diagram? " | Read more » 3 months ago
Ag8n "Further note-EC is electrical conductivity " | Read more » 3 months ago
Ag8n "Especially in mixtures, not all soluble solids are conductive. So yes, you can dissolve (or sometimes suspend) something inert in water. We would..." | Read more » 3 months ago
warren "This is very cool! I do wonder if TDS is going to be consistently correlated with conductivity -- i may just not be well informed but isn't it poss..." | Read more » 3 months ago
Ag8n "Look up conductivity cell and wheatstone bridge Instead of feeding DC into the weatstone bridge, the audio signal is fed in. One leg of the wheats..." | Read more » 3 months ago
alejobonifacio "Thanks for your suggestion @Ag8n, sounds very interesting to try. Anyway I have to be honest and say that I don't quite figure out how to do what y..." | Read more » 3 months ago
Ag8n "It looks like the Coqui is a pretty well designed instrument. But, some of the pharmaceutical instruments would send the tone through a bridge. T..." | Read more » 3 months ago
alejobonifacio "Hi @warren! Yes, 0.1-1 g/L is a useful range at least in rivers in this part of the world, in fact for this river test it worked well. I still have..." | Read more » 3 months ago
liz "Thank you for this close and careful work <3 " | Read more » 3 months ago
warren "Hi @alejobonifacio i wonder if there is an 'ideal' range if we can use resistors or capacitor sizes to shift that to our looked-for "search range" ..." | Read more » 3 months ago
liamann67 "  Expert tips for writing bsb42015 answers easily When it comes to writing different assignments in leadership and management. Download the s..." | Read more » 3 months ago
royshaw "Thank you for sharing this. It is great to know how the environmental test results to health standards worked. A clean environment reflects on the ..." | Read more » 3 months ago
hspencer22 "Thanks for sharing this resource! Turns out, we are working with one of the researchers listed on here. I had no idea he was part of this organizat..." | Read more » 4 months ago