EAST FITCHBURG WWTF
NPDES ID: MA0100986
X — SNC: Effluent violation (non-monthly average limit)
The facility discharged more of a pollutant than its permit allows, measured over a period other than a monthly average.
This quarter: 23 effluent violations.
Violations
May 31, 2026
Solids, total suspended
130% over limit
Discharged 46 mg/L against a permitted limit of 20 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
69% over limit
Discharged 1584.91398668 kg/d against a permitted limit of 939.7799921 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
214% over limit
Discharged 25.1 mg/L against a permitted limit of 8 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
208% over limit
Discharged 15.38 mg/L against a permitted limit of 5 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
25% over limit
Discharged 15 mg/L against a permitted limit of 12 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
315% over limit
Discharged 14.12 mg/L against a permitted limit of 3.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
88% over limit
Discharged 15 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
30% over limit
Discharged 13 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
1% over limit
Discharged 714.141994 kg/d against a permitted limit of 703.69999409 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
62% over limit
Discharged 0.81 mg/L against a permitted limit of 0.5 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
173% over limit
Discharged 41 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Phosphorus, total [as P]
64% over limit
Discharged 0.82 mg/L against a permitted limit of 0.5 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
553% over limit
Discharged 22.21 mg/L against a permitted limit of 3.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, 5-day, 20 deg. C
28% over limit
Discharged 2107.46798229 kg/d against a permitted limit of 1643.47998619 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
31% over limit
Discharged 46 mg/L against a permitted limit of 35 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
E. coli
492% over limit
Discharged 2420 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, 5-day, 20 deg. C
14% over limit
Discharged 40 mg/L against a permitted limit of 35 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
41% over limit
Discharged 1.41 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
pH
0% over limit
Discharged 6.4 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
31% over limit
Discharged 1.31 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Solids, total suspended
170% over limit
Discharged 54 mg/L against a permitted limit of 20 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
303% over limit
Discharged 4.03 mg/L against a permitted limit of 1 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
167% over limit
Discharged 40 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
30% over limit
Discharged 13 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
103% over limit
Discharged 2.03 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
85% over limit
Discharged 1737.9119854 kg/d against a permitted limit of 939.7799921 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
465% over limit
Discharged 11.3 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
83% over limit
Discharged 1287.54398918 kg/d against a permitted limit of 703.69999409 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
60% over limit
Discharged 0.8 mg/L against a permitted limit of 0.5 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
63% over limit
Discharged 13 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
BOD, 5-day, 20 deg. C
7% over limit
Discharged 16 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
65% over limit
Discharged 33 mg/L against a permitted limit of 20 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
20% over limit
Discharged 18 mg/L against a permitted limit of 15 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
53% over limit
Discharged 3.05 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
80% over limit
Discharged 18 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
54% over limit
Discharged 0.77 mg/L against a permitted limit of 0.5 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
13% over limit
Discharged 9 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
492% over limit
Discharged 2420 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2025
Phosphorus, total [as P]
58% over limit
Discharged 0.79 mg/L against a permitted limit of 0.5 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
68% over limit
Discharged 3.35 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
7% over limit
Discharged 16 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
40% over limit
Discharged 14 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
65% over limit
Discharged 33 mg/L against a permitted limit of 20 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
Solids, total suspended
20% over limit
Discharged 12 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
50% over limit
Discharged 0.75 mg/L against a permitted limit of 0.5 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
40% over limit
Discharged 21 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
4% over limit
Discharged 1.04 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
55% over limit
Discharged 31 mg/L against a permitted limit of 20 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
210% over limit
Discharged 6.2 mg/L against a permitted limit of 2 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
Phosphorus, total [as P]
22% over limit
Discharged 0.61 mg/L against a permitted limit of 0.5 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
7% over limit
Discharged 16 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
BOD, 5-day, 20 deg. C
134% over limit
Discharged 881.2139926 kg/d against a permitted limit of 376.81999683 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
42% over limit
Discharged 1001.52399158 kg/d against a permitted limit of 703.69999409 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
412% over limit
Discharged 3604.75996971 kg/d against a permitted limit of 703.69999409 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
351% over limit
Discharged 4235.36596441 kg/d against a permitted limit of 939.7799921 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
64% over limit
Discharged 923.88999224 kg/d against a permitted limit of 562.95999527 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
113% over limit
Discharged 17 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
140% over limit
Discharged 1121.37999058 kg/d against a permitted limit of 467.61999607 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
110% over limit
Discharged 21 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
110% over limit
Discharged 42 mg/L against a permitted limit of 20 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
30% over limit
Discharged 0.65 mg/L against a permitted limit of 0.5 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
27% over limit
Discharged 19 mg/L against a permitted limit of 15 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
33% over limit
Discharged 16 mg/L against a permitted limit of 12 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
187% over limit
Discharged 43 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
BOD, 5-day, 20 deg. C
2% over limit
Discharged 1669.81198597 kg/d against a permitted limit of 1643.47998619 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
492% over limit
Discharged 2420 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
20% over limit
Discharged 42 mg/L against a permitted limit of 35 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
26% over limit
Discharged 0.63 mg/L against a permitted limit of 0.5 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, total suspended
436% over limit
Discharged 12581.24789429 kg/d against a permitted limit of 2347.17998028 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.4 SU against a permitted limit of 8.3 SU (MAXIMUM)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
26% over limit
Discharged 44 mg/L against a permitted limit of 35 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
492% over limit
Discharged 2420 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
NOEC Static Renewal 7Day Chronic Ceriodaphnia dubia
19% over limit
Discharged 50 % against a permitted limit of 62 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
5% over limit
Discharged 21 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
64% over limit
Discharged 2699.02997732 kg/d against a permitted limit of 1643.47998619 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
326% over limit
Discharged 213 mg/L against a permitted limit of 50 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
E. coli
42% over limit
Discharged 579 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
E. coli
13% over limit
Discharged 461 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
E. coli
492% over limit
Discharged 2420 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
14% over limit
Discharged 40 mg/L against a permitted limit of 35 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
28% over limit
Discharged 64 mg/L against a permitted limit of 50 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
BOD, 5-day, 20 deg. C
389% over limit
Discharged 171 mg/L against a permitted limit of 35 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
492% over limit
Discharged 2420 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
14% over limit
Discharged 1.14 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
114% over limit
Discharged 5020.78595781 kg/d against a permitted limit of 2347.17998028 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
308% over limit
Discharged 204 mg/L against a permitted limit of 50 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
156% over limit
Discharged 4208.57996464 kg/d against a permitted limit of 1643.47998619 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Phosphorus, total [as P]
10% over limit
Discharged 0.55 mg/L against a permitted limit of 0.5 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
133% over limit
Discharged 35 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
E. coli
19% over limit
Discharged 488 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Solids, total suspended
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
10% over limit
Discharged 22 mg/L against a permitted limit of 20 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
194% over limit
Discharged 1203 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2024
E. coli
491% over limit
Discharged 2419 MPN/100mL against a permitted limit of 409 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
27% over limit
Discharged 19 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
2% over limit
Discharged 957.03199196 kg/d against a permitted limit of 939.7799921 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
60% over limit
Discharged 32 mg/L against a permitted limit of 20 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)