Instead of spending $20-30 million on wastewater plant upgrades, Jefferson County is hoping you’ll help contain the last 1% of phosphorus in local waterways by not putting a certain type of fertilizer on your yard this spring. Why should you care and what can you do? Bham Now explains. Phosphorus is a mineral humans need in order to function. We have it in our bodies. While it is an important mineral needed to sustain all life, too much can also be a bad thing for our bodies and in the environment.   Excess nutrients like phosphorus in our waterways mean there are extra nutrients for algae blooms to thrive. Algae blooms consume oxygen and kill fish, which in turn throws off the whole ecosystem. So why is Jefferson County having to deal with phosphorus in the water? Jefferson County has spent over $100 million to remove phosphorus through its processes, but they also need help keeping it from running off our lawns. Phosphorus is found in fertilizers. When it rains, the fertilizer runoff goes down the nearest storm drain, which then travels to our lakes and rivers. This is something the EPA is trying to combat. By 2025, Jefferson County is expected to meet the new environmental p...