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Archive - Water Use and System Demand
Massachusetts Water Resources Authority

 

MORE INFORMATION


In 2013, demand on the MWRA water system was 202.78 million gallons per day, average (mgd/avg).

Based on a detailed analysis of major factors affecting water demand, MWRA projects that system demand will remain well below 300 million gallons per day.

An archive of water system demand data since 1985, when MWRA was created, is below.

 
MWRA Water System Demand
in million gallons per day, average (MGD)

2017 MWRA Water System Demand
In million gallons per day/average (mg/d avg.)

Year to date average
192.95 million gallons per day*
10/17
205.07*
09/17
229.46
08/17
235.39*
07/17
230.49
06/17
211.91
05/17
184.60
04/17
174.73
03/17
170.54
02/17
172.31
01/17
169.57
* Preliminary

2016 MWRA Water System Demand
In million gallons per day/average (mg/d avg.)

Year to date average
208.01 million gallons per day*
12/16
152.51
11/16
183.97
10/16
204.39
09/16
234.80
08/16
263.26
07/16
275.97
06/16
258.50
05/16
201.05
04/16
175.16
03/16
173.81
02/16
194.25
01/16
178.47
* Preliminary

2015 MWRA Water System Demand
In million gallons per day/average (mg/d avg.)

Year to date average - 2015
206.57 million gallons per day
12/15
173.83
11/15
172.94
10/15
193.49
09/15
250.83
08/15
253.89
07/15
248.47
06/15
223.75
05/15
222.37
04/15
184.84
03/15
193.70
02/15
183.29
01/15
175.39
* Preliminary

2014 MWRA Water System Demand
In million gallons per day/average (mg/d avg.)

Year to date average - 2014
200.85 million gallons per day
12/14
172.86
11/14
175.73
10/14
202.94
09/14
236.38
08/14
227.33
07/14
228.99
06/14
218.93
05/14
192.90
04/14
181.48
03/14
181.93
02/14
195.48
01/14
195.24

2013 MWRA Water System Demand (MGD)

Average for 2013
202.78 million gallons per day
12/13
189.53
11/13
198.70
10/13
203.98
09/13
221.84
08/13
226.07
07/13
235.90
06/13
211.52
05/13
202.05
04/13
179.02
03/13
184.08
02/13
195.89
01/13
184.76

2012 MWRA Water System Demand (MGD)

Average for 2012
194.71 million gallons per day
12/12
175.56
11/12
181.26
10/12
199.57
09/12
218.12
08/12
230.98
07/12
235.06
06/12
204.25
05/12
193.07
04/12
184.19
03/12
171.04
02/12
170.57
01/12
172.90

2011 - MWRA Water System Demand (MGD)

Average for 2011
196.55 million gallons per day
12/11
186.82
11/11
171.63
10/11
184.49
09/11
202.14
08/11
225.05
07/11
243.44
06/11
216.11
05/11
190.09
04/11
177.45
03/11
179.40
02/11
192.75
01/11
189.26

2010 - MWRA Water System Demand (MGD)

Average for 2010
204.3 million gallons per day
12/10
172.9
11/10
179.2
10/10
204.9
09/10
239.6
08/10
247.4
07/10
259.5
06/10
218.8
05/10
208.8
04/10
182.3
03/10
178.5
02/10
178.1
01/10
178.6

2009 - MWRA Water System Demand (MGD)

Average for 2009
194.3 million gallons per day
12/09
174.5
11/09
176.0
10/09
184.4
09/09
210.5
08/09
224.4
07/09
203.7
06/09
206.5
05/09
204.6
04/09
188.2
03/09
184.7
02/09
186.4
01/09
187.6

2008 - MWRA Water System Demand (MGD)

Average for 2008:
205.6 million gallons per day
12/08
181.9
11/08
188.0
10/08
201.0
09/08
227.2
08/08
232.2
07/08
245.3
06/08
234.0
05/08
204.0
04/08
190.5
03/08
182.8
02/08
187.1
01/08
192.2
2007 - MWRA Water System Demand (MGD)
Average for 2007:
219.9 million gallons per day
12/07
188.5
11/07
206.6
10/07
226.0
09/07
260.9
08/07
264.3
07/07
248.9
06/07
240.8
05/07
218.9
04/07
192.7
03/07
199.0
02/07
200.5
01/07
191.1
2006 - MWRA Water System Demand (MGD)
Average for 2006:
211.4 million gallons per day
12/06
189.8
11/06
198.6
10/06
210.7
09/06
222.3
08/06
251.9
07/06
245.3
06/06
221.5
05/06
208.4
04/06
200.9
03/06
196.4
02/06
194.8
01/06
196.8
2005 - MWRA Water System Demand (MGD)
Average for 2005:
259.2 million gallons per day
12/05
196.0
11/05

198.9

10/05
218.2
09/05
266.2
08/05
285.2
07/05
359.7
06/05
373.4
05/05
330.8
04/05
220.1
03/05
217.4
02/05
223.2
01/05
218.3
2004 - MWRA Water System Demand (MGD)
Average for 2004:
220.33 million gallons per day
12/04
198.05
11/04

206.84

10/04
217.66
09/04
242.07
08/04
251.00
07/04
245.83
06/04
243.75
05/04
218.96
04/04
202.97
03/04
197.68
02/04
207.84
01/04
211.29
2003 - MWRA Water System Demand (MGD)
Average for 2003:
224.67 million gallons per day
12/03
196.42
11/03

198.81

10/03
225.07
09/03
246.39
08/03
257.38
07/03
267.78
06/03
231.96
05/03
220.94
04/03
213.07
03/03
210.12
02/03
216.29
01/03
211.76
2002 - MWRA Water System Demand (MGD)

Average for 2002: 236.01 MGD

12/02
203.94
11/02

208.37

10/02
219.60
09/02
252.12
08/02
302.37
07/02
291.98
06/02
235.43
05/02
236.09
04/02
225.87
03/02
203.86
02/02
225.33
01/02
227.19
2001 - MWRA Water System Demand (MGD)

Average for 2001:
247.56 million gallons per day

12/01
223.43
11/01

233.83

10/01
250.52
09/01
275.00
08/01
289.33
07/01
278.18
06/01
263.96
05/01
254.33
04/01
217.06
03/01
215.91
02/01
231.29
01/01
237.86
2000 - MWRA Water System Demand (MGD)

Average for 2000:
251.71 million gallons per day

12/00
233.17
11/00

231.23

10/00
257.71
09/00
282.68
08/00
282.77
07/00
293.83
06/00
262.04
05/00
234.81
04/00
225.90
03/00
230.08
02/00
243.82
01/00
242.50
1999 - MWRA Water System Demand (MGD)

Average for 1999:
276.24 million gallons per day

12/99
239.68
11/99

251.54

10/99
261.20
09/99
283.88
08/99
324.72
07/99
339.86
06/99
359.87
05/99
273.48
04/99
246.69
03/99
240.00
02/99
244.01
01/99
249.92
1998 - MWRA Water System Demand (MGD)

Average for 1998:
260.38 million gallons per day

12/98
241.13
11/98

248.53

10/98
266.52
09/98
294.45
08/98
319.38
07/98
298.99
06/98
259.10
05/98
255.45
04/98
232.55
03/98
231.24
02/98
233.82
01/98
243.38
1997 - MWRA Water System Demand (MGD)

Average for 1997:
260.95 million gallons per day

12/97
239.07
11/97

236.60

10/97
250.63
09/97
292.18
08/97
313.15
07/97
343.54
06/97
312.43
05/97
241.93
04/97
232.45
03/97
220.76
02/97
225.33
01/97
223.37
1996 - MWRA Water System Demand (MGD)

Average for 1996:
230.35 million gallons per day

12/96
218.96
11/96

226.77

10/96
231.68
09/96
261.91
08/96
289.64
07/96
287.58
06/96
286.60
05/96
547.70
04/96
240.43
03/96
230.18
02/96
245.66
01/96
237.04
1995 - MWRA Water System Demand (MGD)

Average for 1995:
255.55 million gallons per day

12/95
239.83
11/95

226.71

10/95
235.62
09/95
283.54
08/95
317.87
07/95
315.92
06/95
292.85
05/95
245.23
04/95
235.61
03/95
228.57
02/95
220.37
01/95
224.52
1994 - MWRA Water System Demand (MGD)

Average for 1994:
254.23 million gallons per day

12/94
220.41
11/94

230.68

10/94
246.70
09/94
254.32
08/94
284.38
07/94
319.37
06/94
296.84
05/94
239.45
04/94
234.77
03/94
234.25
02/94
252.50
01/94
237.08
1993 - MWRA Water System Demand (MGD)

Average for 1993:
245.76 million gallons per day

12/93
217.23
11/93

220.66

10/93
220.42
09/93
245.34
08/93
286.24
07/93
314.81
06/93
284.96
05/93
241.16
04/93
227.16
03/93
229.62
02/93
231.17
01/93
229.92
1992 - MWRA Water System Demand (MGD)

Average for 1992:
257.44 million gallons per day

12/92
223.96
11/92

244.53

10/92
263.04
09/92
277.75
08/92
268.85
07/92
281.83
06/92
279.86
05/92
259.29
04/92
243.16
03/92
247.15
02/92
249.53
01/92
250.34
1992 - MWRA Water System Demand (MGD)

Average for 1992:
257.44 million gallons per day

12/92
223.96
11/92

244.53

10/92
263.04
09/92
277.75
08/92
268.85
07/92
281.83
06/92
279.86
05/92
259.29
04/92
243.16
03/92
247.15
02/92
249.53
01/92
250.34
1991 - MWRA Water System Demand (MGD)

Average for 1991:
279.18 million gallons per day

12/91
249.12
11/91

247.65

10/91
269.64
09/91
278.42
08/91
312.72
07/91
336.67
06/91
314.74
05/91
277.46
04/91
255.72
03/91
256.48
02/91
276.61
01/91
274.95
1990 - MWRA Water System Demand (MGD)

Average for 1990:
285.10 million gallons per day

12/90
261.65
11/90

271.97

10/90
283.14
09/90
303.31
08/90
316.63
07/90
336.60
06/90
303.38
05/90
262.98
04/90
265.01
03/90
264.00
02/90
264.69
01/90
287.87
1989 - MWRA Water System Demand (MGD)

Average for 1989:
289.17 million gallons per day

12/89
267.26
11/89

267.51

10/89
273.12
09/89
307.42
08/89
300.09
07/89
319.28
06/89
285.74
05/89
275.41
04/89
272.23
03/89
296.57
02/89
304.60
01/89
300.84
1988 - MWRA Water System Demand (MGD)

Average for 1988:
327.17 million gallons per day

12/88
267.26
11/88

267.51

10/88
273.12
09/88
307.42
08/88
300.09
07/88
319.28
06/88
285.74
05/88
275.41
04/88
272.23
03/88
296.57
02/88
304.60
01/88
300.84
1987 - MWRA Water System Demand (MGD)

Average for 1987:
337.73 million gallons per day

12/87
312.95
11/87

318.47

10/87
324.57
09/87
347.21
08/87
382.89
07/87
405.81
06/87
377.09
05/87
328.62
04/87
301.11
03/87
316.70
02/87
330.17
01/87
307.15
1986 - MWRA Water System Demand (MGD)

Average for 1986:
323.41 million gallons per day

12/86
296.78
11/86

316.99

10/86
330.53
09/86
352.75
08/86
342.80
07/86
356.99
06/86
336.69
05/86
324.38
04/86
299.02
03/86
305.12
02/86
303.64
01/86
315.31
1985 - MWRA Water System Demand (MGD)

Average for 1985:
333.97 million gallons per day

12/85
299.31
11/85

306.91

10/85
328.20
09/85
326.16
08/85
357.01
07/85
365.78
06/85
348.19
05/85
350.52
04/85
335.04
03/85
318.94
02/85
346.85
01/85
324.74

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Updated November 1, 2017


Historic Withdrawls Reservoir Levels Watershed Yield Data