Water Distribution Service Companies
| Norlina Town Water Supt (Norlina, NC)
Primarily Serving: Rocky Mount, NC - Durham, NC - Raleigh, NC - Cary, NC |
| Norphlet Municipal Waterworks (Norphlet, AR)
Primarily Serving: Monroe, LA - Pine Bluff, AR - Bossier City, LA - Shreveport, LA |
| North Conway Water Precinct (North Conway, NH)
Primarily Serving: Portland, ME - Manchester, NH - Haverhill, MA - Nashua, NH |
| North Jersey District Water (Wanaque, NJ)
Primarily Serving: Wayne, NJ - Paterson, NJ - Clifton, NJ - Passaic, NJ |
| North Lee County Water Assn (Saltillo, MS)
Primarily Serving: Jackson, TN - Memphis, TN - Decatur, AL - Tanner, AL |
| North Orange Water Sewer (Orange, TX)
Primarily Serving: Port Arthur, TX - Beaumont, TX - Lake Charles, LA - Baytown, TX |
| North Platte Water & Sewer (Casper, WY)
Primarily Serving: Cheyenne, WY - Fort Collins, CO - Rapid City, SD - Loveland, CO |
| North Pulaski Waterworks Assn (Jacksonville, AR)
Primarily Serving: North Little Rock, AR - Little Rock, AR - Conway, AR - Pine Bluff, AR |
| North Runnels Water Co-Op (Winters, TX)
Primarily Serving: Abilene, TX - San Angelo, TX - Midland, TX - Killeen, TX |
| Northeast Water Co (Mount Vernon, IL)
Primarily Serving: Evansville, IN - Saint Louis, MO - Florissant, MO - Saint Charles, MO |
| Northern Cheyenne (Lame Deer, MT)
Primarily Serving: Billings, MT - Casper, WY - Rapid City, SD |
| Northwest Suburban Municipal (Chicago, IL)
Primarily Serving: Cicero, IL - Oak Park, IL - Oak Lawn, IL - Skokie, IL |
| Norwich City Water System ofc (Norwich, NY)
Primarily Serving: Utica, NY - Syracuse, NY - Clay, NY - Scranton, PA |
| Nunam Iqua City Waterplant (Nunam Iqua, AK) |
| Okeechobee Utility Authority (Okeechobee, FL)
Primarily Serving: Port Saint Lucie, FL - Jupiter, FL - Palm Bay, FL - Wellington, FL |
| Old Knoxville Highway Utility (Mosheim, TN)
Primarily Serving: Johnson City, TN - Asheville, NC - Knoxville, TN - Greenville, SC |
| Olmito Water Supply Corp (Olmito, TX)
Primarily Serving: Brownsville, TX - Harlingen, TX - Pharr, TX - Edinburg, TX |
| One-Five-O-Water Supply Corp (New Waverly, TX)
Primarily Serving: Conroe, TX - Montgomery, TX - College Station, TX - Houston, TX |
| Oneonta Utilities Board (Oneonta, AL)
Primarily Serving: Birmingham, AL - Huntsville, AL - Decatur, AL - Tanner, AL |
| Orick Community Svc Dist Water (Orick, CA)
Primarily Serving: Medford, OR - Redding, CA - Chico, CA - Eugene, OR |
| Osceola Water Manager (Osceola, AR)
Primarily Serving: Jonesboro, AR - Memphis, TN - Jackson, TN - North Little Rock, AR |
| Oxford City Water Utilities (Oxford, OH)
Primarily Serving: Hamilton, OH - Middletown, OH - Cincinnati, OH - Dayton, OH |
| Pagosa Area Water & Sanitation (Pagosa Springs, CO)
Primarily Serving: Santa Fe, NM - Rio Rancho, NM - Pueblo, CO - Albuquerque, NM |
| Palestine Water Utility (Palestine, AR)
Primarily Serving: Memphis, TN - Jonesboro, AR - North Little Rock, AR - Little Rock, AR |
| Panama City Water Clerk (Panama, OK)
Primarily Serving: Fort Smith, AR - Canadian, OK - Fayetteville, AR - Springdale, AR |
