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Lead 90th Percentile Levels for 166 Large Water Utilities - Then and Now

After the rule was issued in 1991, water utilities were required to conduct initial monitoring for lead in 1992 and 1993. EPA reviewed data for 166 large water utilities that serve more than 50,000 and compared the results to the most recent monitoring data that utilities have reported to states (2000-2004). In their initial monitoring rounds, all 166 of the utilities were above the action level. During the most recent monitoring, only 15 of the 166 utilities exceeded the 15 ppb action level, demonstrating that corrosion control efforts taken by the utilities have largely been effective in controlling lead levels.

Graph showing the number of systems that were above or below the action level in 1992/93 compared to the most recent data - The chart shows that in 1992/93 the number of systems above the action level was 178 which decreased in the most recent data to 15 with 151 of those 178 systems showing below the lead action level

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

System Specific Information
(Data in italics are from 1992/93 press releases, all other data from SDWIS/FED)
State Water System 90th Percentile  Round 1 - 1992/93 (ppb) 90th Percentile  Round 2 - 1992/93 (ppb)  90th Percentile - Most Recent Level in SDWIS (ppb) SDWIS Monitoring Period Start Date SDWIS  Monitoring Period End Date
AR Jonesboro 26 37 1 1/1/2001 12/31/2001
AZ Phoenix Mun. WS 19 11 1 1/1/2003 12/31/2003
CA Cal Water Service - San Mateo 18 25 10 1/1/2002 12/31/2004
CA CalWater Service - Livermore 80 8 0 1/1/2001 12/31/2003
CA City of Mountain View 8 22 4 1/1/2003 12/31/2005
CA Milpitas 23 23 5 1/1/2001 12/31/2003
CA Palo Alto 30 16 1 1/1/2003 12/31/2005
CA Pleasanton 20 2 3 1/1/2001 12/31/2003
CA Redwood City 28 19 8 1/1/2002 12/31/2004
CT Metro. (Hartford) 40   12 1/1/1999 12/31/2001
DC Washington Aqueduct/DC WASA 18 39 59 1/1/2004 6/30/2004
FL BCOES 1A (Pompano Beach) 84 35 28 1/1/2004 6/30/2004
FL City of Ormond 24 24 10 1/1/2002 12/31/2002
FL City of Port St. Lucie utl. 41 25 6 1/1/2003 12/31/2003
FL Cocoa 32 14 2 1/1/2002 12/31/2002
FL Coral springs 18 4 0 1/1/2002 12/31/2002
FL Daytona Beach 24 20 6 1/1/2002 12/31/2002
FL Escambia County 175 18 2 1/1/2001 12/31/2003
FL Fort Myers W.D. 34 43 2 1/1/2003 12/31/2003
FL Indian River Co Util 29 14 3 1/1/2002 12/31/2002
FL Miami Beach, City of 27 4 8 1/1/2001 12/31/2001
FL Miramar (E& W) plant 47 67 0 1/1/2001 12/31/2001
FL Panama city Beach 23 9 4 1/1/2001 12/31/2001
FL Port of orange 22   4 1/1/2003 12/31/2003
GA Augusta-Richmond County 48 36 3 1/1/2003 12/31/2003
GA Clayton County 34 20 14 1/1/2002 12/31/2002
GA Cobb Co.-Marietta 22   3 1/1/2003 12/31/2003
GA Douglasville-Douglas Co. 30 22 3 1/1/2001 12/31/2001
GA Gwinnett Co. 66 22 6 1/1/2003 12/31/2003
GA Macon-Bibb County 17 20 3 1/1/2003 12/31/2003
GA North Fulton 53 25 3 1/1/2003 12/31/2003
GA Paulding County WS 30   3 1/1/2003 12/31/2003
GA Savannah- Main 21   4 1/1/2003 12/31/2003
GU  Publ. Util. Agency of Guam 25   1 7/1/2003 6/30/2004
HI Pearl Harbor 25 3 0 1/1/2001 12/31/2001
IA Cedar Rapids 80 42 6 1/1/2003 12/31/2003
IA Des Moines 21 10 0 1/1/2000 12/31/2002
IL Berwyn 33 17 8 1/1/2000 12/31/2002
IL Bloomington 18 7 1 1/1/2000 12/31/2002
IL Chicago 10 20 7 1/1/1999 12/31/2001
IL Cicero 29 9 7 1/1/2000 12/31/2002
IL City of Aurora 9 16 10 1/1/2004 6/30/2004
IL City of Elgin 13 18 12 1/1/2001 12/31/2001
IL Decatur 37 13 0 1/1/2000 12/31/2002
IL Evanston 25 7 10 1/1/2000 12/31/2002
IL Glenview 24 22 6 1/1/2000 12/31/2002
IL IL American (E. St. Louis) 19 11 3 1/1/1999 12/31/2001
IL Joilet 22 23 12 1/1/2000 12/31/2002
IL Oak Lawn 19 24 7 1/1/2000 12/31/2002
IL Oak Park 39 29 0 1/1/2001 12/31/2003
IL Palatine 18 22 0 1/1/2000 12/31/2002
IL Waukegan 20 18 0 1/1/2000 12/31/2002
IN Fort Wayne 21   15 1/1/2002 12/31/2004
IN Hammond 22 23 2 1/1/2002 12/31/2002
MA Boston Water & Sewer (MWRA) 48 47 15 1/1/2004 6/30/2004
MA Brookline Water Dept. (MWRA) 62 72 15 7/1/2003 12/31/2003
MA Centerville Osterville Marston Mills WD 23 23 11 1/1/2001 12/31/2001
MA Chicopee Water Dept.  69 110 2 1/1/2001 12/31/2001
MA Dennis water district 93   2 7/1/1999 6/30/2002
MA Falmouth Water dept 40 40 23 7/1/2001 12/31/2001
MA Framingham water Div. (MWRA) 100 64 15 7/1/2003 12/31/2003
MA Haverhill WD 30   4 1/1/2003 12/31/2003
MA Lowell  Regional Water Utl. 51 39 7 1/1/2002 12/31/2002
MA Malden Water Division (MWRA) 71 60 15 7/1/2003 12/31/2003
MA Medford Water Dept. (MWRA) 70 113 15 7/1/2003 12/31/2003
MA Newton Water Dept. (MWRA) 163 123 15 7/1/2003 12/31/2003
MA Quincy Water Dept. (MWRA) 62 27 15 7/1/2003 12/31/2003
MA Somerville Water Dept. (MWRA) 84 35 15 7/1/2003 12/31/2003
MA Springfield Water & Sewer 36 35 9 1/10/2002 12/31/2002
MA Waltham Water Div. (MWRA) 52 76 15 7/1/2003 12/31/2003
MA Weymouth Water Dept. 23 32 15 1/1/2001 6/30/2001
MA Worcester D.P.W 40 32 8 1/1/2003 12/31/2003
MD Howard County dpw distr. 20 13 7 1/1/2002 12/31/2002
MD Washington suburban sanitary comm. 38 14 4 1/1/2002 12/31/2002
ME Portland Water Dist. 70 54 6 1/1/2003 12/31/2003
MI Clinton Township 19 14 0 1/1/2002 12/31/2002
MI Dearborn  29 28 6 1/1/2002 12/31/2002
MI Dearborn Heights 33 41 3 1/1/2002 12/31/2002
MI Detroit 21 15 12 1/1/2002 12/31/2002
MI Farmington Hills  17 11 0 1/1/2002 12/31/2002
MI Grand Rapids 35 37 4 1/1/2001 12/31/2001
MI Livonia 34 15 6 1/1/2002 12/31/2002
MI Macomb- Bibb Township 34 21 0 1/1/2002 12/31/2002
MI Royal Oak 17 24 10 1/1/2001 12/31/2001
MI St. Clair Shores 23 23 2 1/1/2002 12/31/2002
MI Taylor 35 69 12 1/1/2002 12/31/2002
MI Warren 21 16 1 1/1/2002 12/31/2002
MI Westland 21 31 9 1/1/2002 12/31/2002
MN Minneapolis 19 32 6 1/1/2003 12/31/2003
MN St. Paul 54 28 11 1/1/2003 12/31/2003
NC Asheville-Buncombe 29 27 0 1/1/2003 6/30/2003
NC Fayetteville PW Comm. 12 18 12 1/1/2002 6/30/2002
NC Gastonia 17 8 0 7/1/2002 12/31/2002
NC Hendersonville 29 19 16 7/1/2003 12/31/2003
NC Wilmington WS 10 16 1 1/1/2002 6/30/2002
NJ Bayonne W.D. 18 25 25 7/1/2002 12/31/2002
NJ Jersey City (United Water-Jersey City) 84 58 84 7/1/2002 12/31/2002
NJ Liberty Water 28 32 7 7/1/2003 12/31/2003
NJ Newark W.D. -Wanaque  27 23 27 7/1/2002 12/31/2002
NJ Newark W.D.-Pequannock  27 23 27 7/1/2002 12/31/2002
NJ NJ American - Short Hills 25 11 25 7/1/2002 12/31/2002

NJ

 Old Bridge MUA 5 42 42 7/1/2002 12/31/2002
NJ Passaic Valley W.C. 24 30 14 7/1/2003 12/31/2003
NJ Trenton W.D. 18 14 18 7/1/2002 12/31/2002
NJ Wayne Twp. Div. Of W. 30 18 5 7/1/2003 12/31/2003
NY Binghamton 20 7 7 1/1/2000 12/31/2002
NY Buffalo City Div. of Water 13 19 7 1/1/2000 12/31/2002
NY Elmira Water Board 20 16 10 1/1/2003 12/31/2003
NY Jamaica Water (NYC) 20 25 11 1/1/2003 12/31/2003
NY Mount Vernon 62 61 6 1/1/2001 12/31/2001
NY New Rochelle Water 36 36 11 1/1/2001 12/31/2001
NY NYC- Catskills/delaware system 55 20 11 1/1/2003 12/31/2003
NY Onondaga County 20   6 1/1/2000 12/31/2002
NY Syracuse 50 40 17 7/1/2003 12/31/2003
NY Utica Board of Water 100 160    
NY White Plains City 57   4 1/1/2002 12/31/2002
NY Yonkers 68 110 22 1/1/2004 6/30/2004
OH  Cleveland -Baldwin/Nottingham Plants 25 27 6 1/1/2003 12/31/2005
OH  Cleveland - Morgan/Crown Plants 20 15 7 1/1/2003 12/31/2005
OH Columbus  15 16 1 1/1/2002 12/31/2002
OR Beaverton 27 9 3 1/1/2001 12/31/2001
OR Portland, City of 41 53 8 7/1/2003 6/30/2006
OR Rockwood (customer of Portland) 37 12 8 7/1/2003 6/30/2006
OR Tualatin Valley (customer of Portland) 28 29 8 7/1/2003 6/30/2006
PA Bensalem Township (psw bensalem) 29 14 2 1/1/2001 12/31/2001
PA City of Lancaster Auth. 41 25 7 1/1/2001 12/31/2001
PA Greater Johnstown W. A. 21 7 13 1/1/2001 12/31/2001
PA Lower Buck Co. Joint 37 53 1 1/1/2001 12/31/2001
PA pawc watres 69 87 3 1/1/2001 12/31/2001
PA Philadelphia Water Dept. 22 15 13 1/1/2002 12/31/2002
PA Westmoreland Co. Yough 56 6 4 1/1/2001 12/31/2001
PA Westmd mun auth-sweeney plant 25   11 1/1/2001 12/31/2001
PA Williamsport Mun. Auth 51 11 4 1/1/1999 12/31/2001
PA York Water Co. 9 17 2 1/1/2001 12/31/2001
PR Caguas Sur 20 16 5 7/1/2003 12/31/2003
PR Fajardo Ceiba 60 44 8 7/1/2003 12/31/2003
PR Juncos - Cieba sur 20 20 4 7/1/2003 12/31/2003
PR Metropolitano 16 6 21 7/1/2003 12/31/2003
PR Rio Baja, Vieq 29      
PR Rio Blanco, vieques, Culedra 20 8 18 7/1/2003 12/31/2003
RI Pawtucket 29 6 7 1/1/2001 12/31/2001
SC Charleston, City of 211 165 4 1/1/2003 12/31/2003
SC Columbia, City of 40 114 6 1/1/2002 12/31/2002
SC Orangeburg DPU 18 10 4 1/1/2002 12/31/2002
SC Summerville 35 10 3 1/1/2000 12/31/2002
TN Hixson Utility District 16 16 2 7/1/2001 6/30/2003
TN Jackson WS 15 20 2 7/1/2000 6/30/2002
TX City of Frisco 20   2 1/1/2000 12/31/2002
TX City of McKinney 19 9 3 1/1/2000 12/31/2002
TX Galveston 18 6 2 1/1/2000 12/31/2002
TX Port Arthur 28 42 3 1/1/2001 12/31/2003
TX Texas A & M Main Campus 142 9 2 1/1/2000 12/31/2002
VA City of Chesapeake 30 9 4 1/1/2001 6/30/2001
VA City of Portsmouth 26 3 1 1/1/2002 12/31/2004
VA City of Richmond 16 25 4 1/1/2000 12/31/2002
VA Occoquan-Woodbridge 22 30 3 1/1/2001 12/31/2001
VT Champlain 23 23 11 6/1/2002 12/31/2002
WA Bellingham Water Div. 23 19 6 1/1/2000 12/31/2002
WA Bremerton Mnpl Utility 14 17 7 1/1/2002 12/31/2002
WA Everett Publ. Works 23 13 3 1/1/2001 12/31/2003
WA Seattle Water Dept 19 20 10 1/1/2004 6/30/2004
WA Tacoma 32 17 12 1/1/2001 12/31/2003
WI Madison Waterworks 16   Madison is replacing all lead service lines
WI Milwaukee Waterworks 14 26 10 1/1/2003 12/31/2003
WI Oshkosh Waterworks 17 14 8 1/1/2002 6/30/2002
WI Racine Waterworks 18   14 1/1/2003 12/31/2003
WI Sheboygan Water Utilities   19 7 1/1/2002 12/31/2002
WI West Allis Waterworks 22   5 1/1/2002 12/31/2002
WY Cheyenne Board Public Utls 10 17 8 1/1/2000 12/31/2002
 
Total Systems with values 166 151 166
Systems > Action Level 152 106 15
Percent Systems w/values > AL 92% 70% 9%

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