Water Distribution Service Companies
| Riverhead Water District (Riverhead, NY)
Primarily Serving: West Haven, CT - Milford, CT - New Haven, CT - Stratford, CT |
| Rochester Water Assn (Rochester, WA)
Primarily Serving: Lakewood, WA - Graham, WA - Tacoma, WA - Federal Way, WA |
| Rocksprings Water Works (Rocksprings, TX)
Primarily Serving: San Angelo, TX - San Antonio, TX - New Braunfels, TX - San Marcos, TX |
| Rocky Ford Water Works (Rocky Ford, CO)
Primarily Serving: Pueblo, CO - Colorado Springs, CO - Arapahoe, CO - Aurora, CO |
| Rolla Municipal Utilities (Rolla, MO)
Primarily Serving: Columbia, MO - O Fallon, MO - Saint Peters, MO - Saint Charles, MO |
| Roosevelt Irrigation District (Buckeye, AZ)
Primarily Serving: Goodyear, AZ - Avondale, AZ - Surprise, AZ - Peoria, AZ |
| Rural District Water (Coffeyville, KS)
Primarily Serving: Joplin, MO - Tulsa, OK - Broken Arrow, OK - Cleveland, OK |
| Rural Water District (Henryetta, OK)
Primarily Serving: Canadian, OK - Broken Arrow, OK - Tulsa, OK - Cleveland, OK |
| Rural Water District (Wilburton, OK)
Primarily Serving: Canadian, OK - Fort Smith, AR - Broken Arrow, OK - Tulsa, OK |
| Rural Water District (Paola, KS)
Primarily Serving: Olathe, KS - Overland Park, KS - Shawnee, KS - Lawrence, KS |
| S S Water Supply Corp (La Vernia, TX)
Primarily Serving: New Braunfels, TX - San Antonio, TX - San Marcos, TX - Austin, TX |
| Safe Harbor Water Power Corp (Conestoga, PA)
Primarily Serving: Lancaster, PA - Reading, PA - Towson, MD - Newark, DE |
| San Antonio Mutual Water Assoc (San Antonio, NM)
Primarily Serving: Albuquerque, NM - Rio Rancho, NM - Las Cruces, NM - Santa Fe, NM |
| San Luis Water Dist (Los Banos, CA)
Primarily Serving: Gilroy, CA - Merced, CA - Turlock, CA - Salinas, CA |
| Sandy Hook Water District (Sandy Hook, KY)
Primarily Serving: Lexington, KY - Cincinnati, OH - Middletown, OH - Hamilton, OH |
| Sardis Water System (Farmerville, LA)
Primarily Serving: Monroe, LA - Bossier City, LA - Shreveport, LA - Pine Bluff, AR |
| Seal Rock Water District (Seal Rock, OR)
Primarily Serving: Corvallis, OR - Eugene, OR - Salem, OR - Springfield, OR |
| Shepherdstown Water Works (Shepherdstown, WV)
Primarily Serving: Charles Town, WV - Frederick, MD - Germantown, MD - Gaithersburg, MD |
| Sheridan Waterworks (Sheridan, AR)
Primarily Serving: Pine Bluff, AR - Little Rock, AR - North Little Rock, AR - Conway, AR |
| Shore Water Co Inc (Seaside Park, NJ)
Primarily Serving: Toms River, NJ - Trenton, NJ - Levittown, PA - New Brunswick, NJ |
| Shrewsbury Water & Sewer Dept (Shrewsbury, MA)
Primarily Serving: Worcester, MA - Framingham, MA - Waltham, MA - Newton, MA |
| Slc Meter (Davisburg, MI)
Primarily Serving: Waterford, MI - West Bloomfield, MI - Pontiac, MI - Novi, MI |
| Somerset City Water Svc (Somerset, KY)
Primarily Serving: Lexington, KY - Knoxville, TN - Louisville, KY - Bowling Green, KY |
| Somerset Water Svc (Somerset, KY)
Primarily Serving: Lexington, KY - Knoxville, TN - Louisville, KY - Bowling Green, KY |
| Sorento Village Waterworks (Sorento, IL)
Primarily Serving: Florissant, MO - Saint Louis, MO - Saint Charles, MO - Springfield, IL |
