What type of pipe for 180' well?

Recently, I discovered a leak or perhaps a faulty check valve in my 180' well. Years ago, I had a single, robust length of 1.5" black polyethylene pipe installed, which I always felt was incredibly strong. However, about nine years ago, after replacing the pump, the well service team convinced me to switch to sections of thinner-walled white plastic pipe (possibly PVC). They threaded joints and installed brass couplings every 15 feet or so. This new arrangement appeared much more fragile compared to the original black polyethylene pipeline. It is possible that one or more of these joints are now leaking. While I usually tackle repairs myself, I'm hesitant to attempt removing this piping due to its potential fragility and risk of dropping it. Therefore, I believe I'll hire a professional for this repair.

I'm curious: Is this piping system typical for well installations? Is it reliable? Should I revert to using black polyethylene?

Upon reflection, I believe you might have been overcharged, especially if the original pipe was still in good condition. Polyethylene has been a standard for over 50 years and can efficiently function even at depths of up to 500 feet. If you decide to go back to polyethylene, opt for the 160 psi rated 1". There’s no need for larger diameters like 1.25", which you probably have because your pump fits a 1.25" outlet.

Since you are facing a leak, pulling the pipe should result in the water escaping as you extract it. You may even find that the weight will be lessened if the leak is around the check valve. With two people, you should be able to lift it; using a steel vise-type grip wrench will keep it from falling back down the well while you unscrew each section.

Regarding the wire that was replaced: did the old wiring include a green ground wire? If it did not, current code dictates that this should be updated. Only in cases where the previous wiring lacks a ground wire should it be replaced.

How did the well service team extract the well? Was it done manually or with a truck? I see no reason for them to replace pipe that was not damaged unless they cut it or noticed it had thin spots from friction. It seems plausible that they preferred the threaded piping because it was easier for them to work with, or maybe they simply wanted to upsell you on new plumbing.

The pipe they recommended should be at least Schedule 40, although Schedule 80 with threaded ends is a far better option. Over time, PVC can wear and become brittle, which makes Schedule 80 the preferred choice in most cases.

If it is threaded, then most likely it will be Schedule 80. If Schedule 40 PVC is properly glued, it can be much sturdier than a threaded PVC joint. It’s advisable to avoid threaded couplings altogether. Schedule 80 will provide more strength but will also add significant weight.

As additional context, many threads were opened discussing the necessity of the updated wiring. The changes were made following several tragic incidents, including one where a man died due to electric shock while replacing his pump. This led to regulations that new installations must include a grounding wire.

Your pump may now be struggling if the water level has lowered. However, if you haven't run out of water, it's likely that the water level hasn’t dipped below the pump's intake, especially if the leak is submerged. The leak might be occurring at one of the couplers or connections.

Finally, I would recommend you consult with qualified professionals, ideally those certified by the National Ground Water Association and licensed in your state. This ensures that your installation is handled correctly and with necessary accountability.

Choosing the Right Pipe for Your Deep Well Pump

When selecting a well pipe, consider the crucial role water transport plays, as well as the durability of the pipe. Understanding the different types of pipes is vital for ensuring effective water pumping. Among the options, PVC and HDPE pipes are popular for their cost-effectiveness and resilience.

PVC Pipe

PVC pipes are favored for deep well installations due to their affordability, durability, and ease of use. They are resistant to corrosion and can be found in various lengths for different well depths. However, they might become brittle under extreme temperatures.

HDPE Pipe

Known for their flexibility and strength, HDPE pipes can withstand harsh environments and are particularly suitable for rocky areas.

Stainless Steel Pipe

These pipes are reliable for maintaining high water quality, especially where corrosion is a concern, but they usually come at a higher cost than PVC or HDPE.

Galvanized Steel Pipe

Famed for their durability, galvanized steel pipes are heavier and may require more exertion during installation.

Conclusion

Choosing the right pipe material is pivotal for successful deep well installations. Each material has its own benefits and limitations, and considerations such as cost, water quality, and environmental factors should all play into your decision-making process.

For more insights and to explore further options, visit us at SINCO.