ROUND MOUNTAIN WATER AND SANITATION DISTRICT
NPDES ID: COX632073
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 16 effluent violations.
Violations
May 31, 2026
Solids, total suspended
4% over limit
Discharged 78 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
107% over limit
Discharged 69 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
118% over limit
Discharged 98 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
107% over limit
Discharged 69 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
4% over limit
Discharged 78 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
227% over limit
Discharged 98 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
227% over limit
Discharged 98 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
118% over limit
Discharged 98 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
April 30, 2026
BOD, 5-day, 20 deg. C
67% over limit
Discharged 50 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
51% over limit
Discharged 113 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
11% over limit
Discharged 50 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
3% over limit
Discharged 113 mg/L against a permitted limit of 110 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
67% over limit
Discharged 50 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
51% over limit
Discharged 113 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
11% over limit
Discharged 50 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
3% over limit
Discharged 113 mg/L against a permitted limit of 110 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
9% over limit
Discharged 82 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
47% over limit
Discharged 44 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
47% over limit
Discharged 44 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
9% over limit
Discharged 82 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
February 28, 2026
BOD, 5-day, 20 deg. C
57% over limit
Discharged 167.52599859 kg/d against a permitted limit of 106.6899991 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
97% over limit
Discharged 59 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
31% over limit
Discharged 59 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
January 31, 2026
BOD, 5-day, 20 deg. C
9% over limit
Discharged 116.67799902 kg/d against a permitted limit of 106.6899991 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
Oil and grease
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Oil and grease
10% over limit
Discharged 11 mg/L against a permitted limit of 10 mg/L (INST MAX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
63% over limit
Discharged 49 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
9% over limit
Discharged 49 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
9% over limit
Discharged 49 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
63% over limit
Discharged 49 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, 5-day, percent removal
80% over limit
Discharged 73 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
213% over limit
Discharged 94 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
27% over limit
Discharged 95 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
109% over limit
Discharged 94 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
November 30, 2025
Solids, total suspended
9% over limit
Discharged 82 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
87% over limit
Discharged 56 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
87% over limit
Discharged 56 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
24% over limit
Discharged 56 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
7% over limit
Discharged 84 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
9% over limit
Discharged 82 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
24% over limit
Discharged 56 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
October 31, 2025
Solids, total suspended
68% over limit
Discharged 126 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
233% over limit
Discharged 100 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
15% over limit
Discharged 126 mg/L against a permitted limit of 110 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
68% over limit
Discharged 126 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
122% over limit
Discharged 100 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
133% over limit
Discharged 65 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
133% over limit
Discharged 65 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
122% over limit
Discharged 100 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
233% over limit
Discharged 100 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
15% over limit
Discharged 126 mg/L against a permitted limit of 110 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
September 30, 2025
BOD, 5-day, percent removal
20% over limit
Discharged 82 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
260% over limit
Discharged 108 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
20% over limit
Discharged 90 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
20% over limit
Discharged 82 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
140% over limit
Discharged 108 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
140% over limit
Discharged 108 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
32% over limit
Discharged 140.73999882 kg/d against a permitted limit of 106.6899991 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
260% over limit
Discharged 108 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
20% over limit
Discharged 90 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, total suspended
61% over limit
Discharged 121 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
480% over limit
Discharged 13 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
480% over limit
Discharged 13 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
358% over limit
Discharged 206 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
587% over limit
Discharged 206 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
61% over limit
Discharged 121 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
10% over limit
Discharged 121 mg/L against a permitted limit of 110 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
358% over limit
Discharged 206 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
587% over limit
Discharged 206 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
10% over limit
Discharged 121 mg/L against a permitted limit of 110 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
July 31, 2025
Solids, total suspended
72% over limit
Discharged 129 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
72% over limit
Discharged 129 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
17% over limit
Discharged 129 mg/L against a permitted limit of 110 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
502% over limit
Discharged 271 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
17% over limit
Discharged 129 mg/L against a permitted limit of 110 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
153% over limit
Discharged 62 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
502% over limit
Discharged 271 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
803% over limit
Discharged 271 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
16% over limit
Discharged 123.48799896 kg/d against a permitted limit of 106.6899991 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
803% over limit
Discharged 271 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
153% over limit
Discharged 62 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
June 30, 2025
BOD, 5-day, 20 deg. C
182% over limit
Discharged 127 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
240% over limit
Discharged 49 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
178% over limit
Discharged 125 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
67% over limit
Discharged 125 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
14% over limit
Discharged 125 mg/L against a permitted limit of 110 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
14% over limit
Discharged 125 mg/L against a permitted limit of 110 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
67% over limit
Discharged 125 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
93% over limit
Discharged 71 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
317% over limit
Discharged 125 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
323% over limit
Discharged 127 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
96% over limit
Discharged 147 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
102% over limit
Discharged 91 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
203% over limit
Discharged 91 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
34% over limit
Discharged 147 mg/L against a permitted limit of 110 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
80% over limit
Discharged 73 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
April 30, 2025
BOD, 5-day, 20 deg. C
73% over limit
Discharged 52 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
25% over limit
Discharged 94 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
16% over limit
Discharged 52 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
February 28, 2025
BOD, 5-day, 20 deg. C
100% over limit
Discharged 60 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
7% over limit
Discharged 84 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
33% over limit
Discharged 60 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
January 31, 2025
BOD, 5-day, 20 deg. C
50% over limit
Discharged 45 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
10% over limit
Discharged 0.077 MGD against a permitted limit of 0.07 MGD (30DA AVG)
DMR, Limited - Numeric Violation
December 31, 2024
BOD, 5-day, 20 deg. C
7% over limit
Discharged 32 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
20% over limit
Discharged 128.48199892 kg/d against a permitted limit of 106.6899991 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
7% over limit
Discharged 32 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
November 30, 2024
BOD, 5-day, 20 deg. C
18% over limit
Discharged 53 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
7% over limit
Discharged 80 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
18% over limit
Discharged 53 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
77% over limit
Discharged 53 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
33% over limit
Discharged 80 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
77% over limit
Discharged 53 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
33% over limit
Discharged 80 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
7% over limit
Discharged 80 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Solids, total suspended
13% over limit
Discharged 85 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
367% over limit
Discharged 140 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
207% over limit
Discharged 54 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
13% over limit
Discharged 85 mg/L against a permitted limit of 75 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
207% over limit
Discharged 54 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
582% over limit
Discharged 307 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
211% over limit
Discharged 140 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
923% over limit
Discharged 307 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2024
BOD, 5-day, 20 deg. C
216% over limit
Discharged 142 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
373% over limit
Discharged 142 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
216% over limit
Discharged 142 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
307% over limit
Discharged 39 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
307% over limit
Discharged 39 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
373% over limit
Discharged 142 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2024
BOD, 5-day, percent removal
200% over limit
Discharged 55 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
387% over limit
Discharged 146 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
387% over limit
Discharged 146 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
224% over limit
Discharged 146 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
200% over limit
Discharged 55 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
224% over limit
Discharged 146 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)