Farmington water and sewer rates
Who supplies water to Farmington houses, what it costs, and how the sewer charge works.
City of Farmington
City of Farmington, billed quarterly
| Use a month | Price per 1,000 gallons |
|---|---|
| Fixed charge | $6.08 a month |
| 0 to 6.6667 thousand gallons | $1.88 |
| 6.6667 to 13.3333 thousand gallons | $2.81 |
| 13.3333 to more | $3.73 |
- Source
- Groundwater from seven wells 424 to 512 feet deep that draw from the Prairie Du Chien-Jordan and Jordan aquifers
- Hardness
- 283 mg/L, which the City's table classes as very hard (180 mg/L and over)
- Radium
- In 2025 a combined radium result and a gross alpha result were above the limit; compliance uses four quarterly samples, the report lists no violation (4.8 pCi/l radium against a 5 pCi/l limit, 12.1 pCi/l gross alpha against 15), and quarterly monitoring continues
- Lead
- For lead sampled 07/25/25 and 01/05/26, 90% of results were less than 2 ppb; as of 11/17/2025 the service line inventory listed 0 lead, 1 galvanized requiring replacement and 1,557 unknown material lines
Sewer
City of Farmington bills residential sewer quarterly: a $73.43 base fee that includes the first 10,000 gallons, then $9.55 per 1,000 gallons, based on the lower of actual or winter quarter water usage.
Other charges on the utility bill
- Storm water fee (per single-family lot, REU): $8.89 a month
- Street light fee (per REU): $2.52 a month
Sources
Checked October 21, 2026. Every number here comes from the public sources listed, matched by our checker.
Rates change every year; this page shows when it was last checked. Nothing here is legal, tax or insurance advice.