- Mac Holliman Lower Trinity Well 5663922 – End of MacHolliman Dr.
- Headwaters Monitor Well #1 Lower Trinity 6801704 – Lane Valley Rd.
- Headwaters Monitor Well #1 Middle Trinity 6801703 – Lane Valley Rd.
- Headwaters Monitor Well #9 Middle Trinity 5659201 – Lang Ranch Hwy 83
- Headwaters Monitor Well #10 Middle Trinity 6904503 – Menagerie Ranch Hwy 39
- Headwaters Monitor Well #11 Lower Trinity 5663924 – Ranchero Rd.
- Headwaters Monitor Well #11 Middle Trinity 5663923 – Ranchero Rd.
- Headwaters Monitor Well #16 Middle Trinity 5644901 – I-10 Frontage Rd. toward Junction
