Water quality news Archive

These posts contain information about the Upper Merrimack Monitoring Program and water quality sampling results.

Merrimack watershed bacteria results: July 26, 2022

Dear river and watershed friends,

The 2022 bacteria sampling season continues on its third event with 100% samples at 100% of its eleven sites from Franklin to Bow.

We know that you have heard it before but it’s important to remember that the results shown below are the probable number of E. coli bacteria colonies for every 100 millilitres of water. All warm blooded animals (including we humans) have E. coli in their guts. That means that bacteria are an indicator that poop has found its way to the water. This could be a result of stormwater runoff, failed septic systems, mis-connected pipes that are meant to transport household waste to a treatment plant, pet or wildlife waste from river watershed, and other sources.

To protect public health, State designated swim beaches are not allowed to exceed 88 colonies of E. coli per 100ml. Class B waters (all of our sites are designated as Class B) shall not exceed 406 colonies. These designations do not always reflect real-time  water quality. The designation indicates what uses, e.g., swimming, fishing, should be supported by maintaining water quality.

No news (or change, in this case) is good news, right? All of the sites this week are below the swim beach designation and the Class B designation. These low bacteria counts are expected when there has been little or no rain.
You hear us say often, “When it rains, it’s poor,” which means that you may wish to wait a day or so after it rains before recreating in a surface water. Sample results are as of Tuesday morning, July 26, 2022. Results may change from day-to-day, depending on upstream conditions and rainstorms that may have occurred after Tuesday morning.

Here are the details.

Site number and descriptionresults
#1 Pemigewasset at Route 3, Franklin75
#2 Winnipesaukee at Trestle, Franklin10
#3 Merrimack R. above FWWTF, Franklin31
#4 Merrimack R. below FWWTF, Franklin20
#5 Merrimack at Jamie Welch, Boscawen31
#6 Merrimack at US Route 4, Canterbury41
#7 Contoocook at Rivco, Penacook41
#8 Merrimack at Sewalls Falls, Concord52
#9 Merrimack at Manchester St., Concord31
#10 Merrimack at Blue Seal, Bow10
#11 Merrimack at Garvins Falls, Bow31

Please join us in recognizing and thanking our Adopt-a-River Site Sponsors that make the Upper Merrimack Monitoring Program possible (listed in order of their sponsored sites).
Watts Regulator / Webster Valve
Franklin Savings Bank
Franklin Waste Water Treatment Plant (two sites)
Elektrisola
Nelson Analytical
Essex Hydro
Aries Engineering
GZA Environmental
Granite Shore Power (two sites)

You’ll next hear from us in two weeks with new a round of sampling results.

Please visit our fresh and newly designed forum at MerrimackRiver.org/forum and our new, Upper Merrimack Watershed Association site at MerrimackRiver.org for further information. Don’t hesitate to contact us at UMMP@MerrimackRiver.org or 603.796.2615 should you have any questions.

Sincerely,

Michele L Tremblay                          Stephen C Landry
Program Manager                             Sampling Supervisor

Merrimack watershed bacteria results: July 12, 2022

Dear river and watershed friends,

The 2022 bacteria sampling season continues with 100% sampling at 100% of its eleven sites from Franklin to Bow.

We know that you have heard it before but it’s important to remember that the results shown below are the probable number of E. coli bacteria colonies for every 100 millilitres of water. All warm blooded animals (including we humans) have E. coli in their guts. That means that bacteria are an indicator that poop has found its way to the water. This could be a result of stormwater runoff, failed septic systems, mis-connected pipes that are meant to transport household waste to a treatment plant, pet or wildlife waste from river watershed, and other sources.

To protect public health, State designated swim beaches are not allowed to exceed 88 colonies of E. coli per 100ml. Class B waters (all of our sites are designated as Class B) shall not exceed 406 colonies. These designations do not always reflect real-time  water quality. The designation indicates what uses, e.g., swimming, fishing, should be supported by maintaining water quality.

All of the sites this week are below the swim beach designation and the Class B designation. These low bacteria counts are expected when there has been little or no rain.

You hear us say often, “When it rains, it’s poor,” which means that you may wish to wait a day or so after it rains before recreating in a surface water. Sample results are as of Tuesday morning, July 12, 2022. Results may change from day-to-day, depending on upstream conditions and rainstorms that may have occurred after Tuesday morning.

Here are the details.

Site number and descriptionresults
#1 Pemigewasset at Route 3, Franklin10
#2 Winnipesaukee at Trestle, Franklin20
#3 Merrimack R. above FWWTF, Franklin63
#4 Merrimack R. below FWWTF, Franklin31
#5 Merrimack at Jamie Welch, Boscawen<10
#6 Merrimack at US Route 4, Canterbury20
#7 Contoocook at Rivco, Penacook20
#8 Merrimack at Sewalls Falls, Concord10
#9 Merrimack at Manchester St., Concord<10
#10 Merrimack at Blue Seal, Bow<10
#11 Merrimack at Garvins Falls, Bow30

Please join us in thanking our Adopt-a-River Site Sponsors that make the Upper Merrimack Monitoring Program possible (listed in order of their sponsored sites).
Watts Regulator / Webster Valve
Franklin Savings Bank
Franklin Waste Water Treatment Plant (two sites)
Elektrisola
Nelson Analytical
Essex Hydro
Aries Engineering
GZA Environmental
Granite Shore Power (two sites)

You’ll next hear from us in two weeks with new a round of sampling results.

Please visit our fresh and newly designed forum at MerrimackRiver.org/forum and our new, Upper Merrimack Watershed Association site: MerrimackRiver.org for further information. Don’t hesitate to contact us at UMMP@MerrimackRiver.org or 603.796.2615 should you have any questions.

Sincerely,

Michele L Tremblay                          Stephen C Landry
Program Manager                             Sampling Supervisor

Merrimack watershed bacteria results: June 28, 2022

Dear river and watershed friends,

After a pandemic hiatus, the Upper Merrimack Monitoring Program Adopt-a-River Site Sponsors and volunteers began the 2022 bacteria sampling season with 100% sampling at 100% of its eleven sites from Franklin to Bow.

The results shown below are the probable number of E. coli bacteria colonies for every 100 millilitres of water. All warm blooded animals (including we humans) have E. coli in their guts. That means that bacteria are an indicator that poop has found its way to the water. This could be a result of stormwater runoff, failed septic systems, mis-connected pipes that are meant to transport household waste to a treatment plant, pet or wildlife waste from river watershed and, and other sources.

To protect public health, State designated swim beaches are not allowed to exceed 88 colonies of E. coli per 100ml. Class B waters (all of our sites are designated as Class B) shall not exceed 406 colonies. These designations do not always reflect real-time water quality. The designation indicates what uses, e.g., swimming, fishing, should be supported by maintaining water quality.

Almost all of the sites this week are below the swim beach designation. Site 1 is well below the Class B designation. These low bacteria counts are expected when there has been little or no rain.

You hear us say often, “When it rains, it’s poor,” which means that you may wish to wait a day or so after it rains before recreating in a surface water. Sample results are as of Tuesday morning, June 28, 2022. Results may change from day-to-day, depending on upstream conditions and rainstorms that may have occurred after Tuesday morning.

Merrimack watershed bacteria results: June 28, 2022

Dear river and watershed friends,

After a pandemic hiatus, the Upper Merrimack Monitoring Program Adopt-a-River Site Sponsors and volunteers began the 2022 bacteria sampling season with 100% sampling at 100% of its eleven sites from Franklin to Bow.

The results shown below are the probable number of E. coli bacteria colonies for every 100 millilitres of water. All warm blooded animals (including we humans) have E. coli in their guts. That means that bacteria are an indicator that poop has found its way to the water. This could be a result of stormwater runoff, failed septic systems, mis-connected pipes that are meant to transport household waste to a treatment plant, pet or wildlife waste from river watershed and, and other sources.

To protect public health, State designated swim beaches are not allowed to exceed 88 colonies of E. coli per 100ml. Class B waters (all of our sites are designated as Class B) shall not exceed 406 colonies. These designations do not always reflect real-time  water quality. The desigation indicates what uses, e.g., swimming, fishing, should be supported by maintaining water quality.

Almost all of the sites this week are below the swim beach designation. Site 1 is well below the Class B designation. These low bacteria counts are expected when there has been little or no rain.

You hear us say often, “When it rains, it’s poor,” which means that you may wish to wait a day or so after it rains before recreating in a surface water. Sample results are as of Tuesday morning, June 28, 2022. Results may change from day-to-day, depending on upstream conditions and rainstorms that may have occured after Tuesday morning.

Here are the details.

Site number and descriptionresults
#1 Pemigewasset at Route 3, Franklin169
#2 Winnipesaukee at Trestle, Franklin31
#3 Merrimack R. above FWWTF, Franklin30
#4 Merrimack R. below FWWTF, Franklin52
#5 Merrimack at Jamie Welch, Boscawen63
#6 Merrimack at US Route 4, Canterbury41
#7 Contoocook at Rivco, Penacook20
#8 Merrimack at Sewalls Falls, Concord10
#9 Merrimack at Manchester St., Concord31
#10 Merrimack at Blue Seal, Bow10
#11 Merrimack at Garvins Falls, Bow30

Please join us in thanking our Adopt-a-River Site Sponsors that make the Upper Merrimack Monitoring Program possible (listed in order of their sponsored sites).
Watts Regulator / Webster Valve
Franklin Savings Bank
Franklin Waste Water Treatment Plant (two sites)
Elektrisola
Nelson Analytical
Essex Hydro
Aries Engineering
GZA Environmental
Granite Shore Power (two sites)

You’ll next hear from us in two weeks with new a round of sampling results.

Please visit our fresh and newly designed forum at MerrimackRiver.org/forum and our new, Upper Merrimack Watershed Association site: MerrimackRiver.org for further information. Don’t hesitate to contact us at UMMP@MerrimackRiver.org or 603.796.2615 should you have any questions.

Sincerely,

Michele L Tremblay                          Stephen C Landry
Program Manager                             Sampling Supervisor

Merrimack watershed bacteria results: August 11, 2020

Dear River and Watershed Friends,

Upper Merrimack Monitoring Program volunteers began the 2020 bacteria sampling season with 100% sampling at 100% of the four sites in Franklin.

This year, we are challenged by budget cuts and are not able to monitor at the remaining seven sites on the Merrimack River from below Franklin, down to Bow, and on the Contoocook River. We are working with the NH Department of Environmental Services and our Adopt-a-River Site sponsors to see how we may secure support to restore our full monitoring capacity for the remainder of this year or for 2021. 

The results shown below are the probable number of E. coli bacteria colonies for every 100 millilitres of water. Warm blooded animals (including humans) all have E. coli in their guts. State designated swim beaches are not allowed to exceed 88 colonies and Class B waters (all of our sites are Class B waters) should be below 406 colonies. Here are the details.

Site number and description8.11.20
#1 Pemigewasset River40
#2 Winnipesaukee River34
#3 Merrimack River above FWWTF10
#4 Merrimack River below FWWTF20

Sample results are as of Tuesday morning, August 11, 2020. Results may change from day-to-day, depending on upstream conditions and rainstorms.

For this sampling event, we are seeing excellent results. All sites meet the Class B designation for the Merrimack River and the more stringent designated swim beach standards. These low bacteria counts are expected when there has been little or no rain.

For these four sites, we feel that upper Merrimack watershed is relatively clean and healthy. You hear us say, “When it rains, it’s poor,” which means that you may wish to wait a day or so after it rains before recreating in a surface water. 

You’ll hear from us next year with new a round of sampling results. Please join us in thanking our Adopt-a-River Site Sponsors that make the Upper Merrimack Monitoring Program possible (listed in order of their sponsored sites).
Watts
Franklin Savings Bank
Franklin Waste Water Treatment Plant
Elektrisola
Nelson Analytical
Essex Hydro
Aries Engineering
GZA Environmental
Granite Shore Power

Please visit our fresh and newly designed forum at MerrimackRiver.org/forum.
You can also find us at MerrimackRiver.org for further information or don’t hesitate to contact us at UMMP@MerrimackRiver.org or 603.796.2615 should you have any questions.

Sincerely,

Michele L Tremblay                          Stephen C Landry
Program Manager                             Sampling Supervisor

Merrimack watershed bacteria results: July 14 and 28, 2020

Dear River and Watershed Friends,

Upper Merrimack Monitoring Program volunteers began the 2020 bacteria sampling season with 100% sampling at 100% of the four sites in Franklin.

This year, we are challenged by budget cuts and are not able to monitor at the remaining seven sites on the Merrimack River from below Franklin, down to Bow, and on the Contoocook River. We are working with the NH Department of Environmental Services and our Adopt-a-River Site sponsors to see how we may secure support to restore our full monitoring capacity for the remainder of this year or for 2021. 

The results shown below are the probable number of E. coli bacteria colonies for every 100 millilitres of water. Warm blooded animals (including humans) all have E. coli in their guts. State designated swim beaches are not allowed to exceed 88 colonies and Class B waters (all of our sites are Class B waters) should be below 406 colonies. Here are the details.

Site number and description7.14.207.28.20
#1 Pemigewasset R.12230
#2 Winnipesaukee R.3737
#3 Merrimack R. above FWWTF6649
#4 Merrimack R. below FWWTF6418

Sample results are as of Tuesday morning, July 28, 2020. Results may change from day-to-day, depending on upstream conditions and rainstorms.

For these two sampling events, we are seeing excellent results. All sites meet the Class B designation for the Merrimack River and all but one meets the more stringent designated swim beach standards. These low bacteria counts are expected when there has been little or no rain.

For these four sites, we feel that upper Merrimack watershed is relatively clean and healthy. You hear us say, “When it rains, it’s poor,” which means that you may wish to wait a day or so after it rains before recreating in a surface water. 

You’ll hear from us next year with new a round of sampling results. Please join us in thanking our Adopt-a-River Site Sponsors that make the Upper Merrimack Monitoring Program possible (listed in order of their sponsored sites).
Watts
Franklin Savings Bank
Franklin Waste Water Treatment Plant
Elektrisola
Nelson Analytical
Essex Hydro
Aries Engineering
GZA Environmental
Granite Shore Power

Please visit our fresh and newly designed forum at MerrimackRiver.org/forum.
You can also find us at MerrimackRiver.org for further information or don’t hesitate to contact us at UMMP@MerrimackRiver.org or 603.796.2615 should you have any questions.

Sincerely,

Michele L Tremblay                          Stephen C Landry
Program Manager                             Sampling Supervisor

Merrimack watershed bacteria results: September 9, 2019

All sample results are as of Tuesday morning, September 3, 2019. Results may change from day-to-day, depending on upstream conditions and rainstorms.

This week, we continue to see excellent results. All sites meet the Class B designation for the Merrimack River. They all fall well within the more stringent designated swim beach standards as well. The watershed had another rinse on Monday and then a quick dry overnight. These low bacteria counts are expected after those weather events. Based on this season’s results, we feel that we can say that the upper Merrimack watershed is relatively clean and healthy. We often say, “When it rains, it’s poor.” You may wish to wait a day or so after it rains before recreating in a surface water. 

You’ll hear from us next year with new a round of sampling results. Please join us in thanking our Adopt-a-River Site Sponsors that make the Upper Merrimack Monitoring Program possible (listed in order of their sponsored sites).
Watts
Franklin Savings Bank
Franklin Waste Water Treatment Plant
Elektrisola
Nelson Analytical
Essex Hydro
Aries Engineering
GZA Environmental
Granite Shore Power

Please visit our fresh and newly designed forum at MerrimackRiver.org/forum.
You can also find us at MerrimackRiver.org for further information or don’t hesitate to contact us at UMMP@MerrimackRiver.org or 603.796.2615 should you have any questions.

Sincerely,

Michele L Tremblay                          Stephen C Landry
Program Manager                             Sampling Supervisor

Merrimack watershed bacteria results: August 20, 2019

Dear River and Watershed Friends,

Upper Merrimack Monitoring Program volunteers continue the bacteria sampling season with 100% sampling at 100% of the eleven sites on the Merrimack River from Franklin to Bow and on the Pemigewasset, Winnipesaukee, and Contoocook Rivers. 

The results shown below are the probable number of E. coli bacteria colonies for every 100 millilitres of water. Warm blooded animals (including humans) all have E. coli in their guts. State designated swim beaches are not allowed to exceed 88 colonies and Class B waters (all of our sites are Class B waters) should be below 406 colonies. Here are the details.

Site number and description
1 Pemigewasset63
2 Winnipesaukee62
3 Merrimack above FWWT Plant10
4 Merrimack below FWWT Plant30
5 Merrimack Jamie Welch Park41
6 Merrimack Route 4 Bypass52
7 Contoocook at Rivco30
8 Merrimack Sewalls Falls20
9 Merrimack Manchester St10
10 Merrimack Blue Seal20
11 Merrimack Garvins Falls20

All sample results are as of Tuesday morning, August 20, 2019. Results may change from day-to-day, depending on upstream conditions and rainstorms.

This week, we have very good results. All sites meet the Class B designation for the Merrimack River. They all fall well within the more stringent designated swim beach standards, as well. The watershed had another rinse over the weekend and then a quick dry in the early part of the week. These low bacteria counts are expected after those weather events. The upper Merrimack watershed is relatively clean and healthy. We often say, “When it rains, it’s poor.” You may wish to wait a day or so after it rains before recreating in a surface water. 

You’ll hear from us again after the last sampling day of the season on September 3. 

Please visit our fresh and newly designed forum at MerrimackRiver.org/forum.
You can also find us at MerrimackRiver.org for further information or don’t hesitate to contact us at UMMP@MerrimackRiver.org or 603.796.2615 should you have any questions.

Sincerely,

Michele L Tremblay                          Stephen C Landry
Program Manager                             Sampling Supervisor

Merrimack watershed bacteria results: August 6, 2019

Dear River and Watershed Friends,

Upper Merrimack Monitoring Program volunteers continue the bacteria sampling season with 100% sampling at 100% of the eleven sites on the Merrimack River from Franklin to Bow and on the Pemigewasset, Winnipesaukee, and Contoocook Rivers. 

The results shown below are the probable number of E. coli bacteria colonies for every 100 millilitres of water. Warm blooded animals (including humans) all have E. coli in their guts. State designated swim beaches are not allowed to exceed 88 colonies and Class B waters (all of our sites are Class B waters) should be below 406 colonies. Here are the details.

Site number and description 
1 Pemigewasset31
2 Winnipesaukee41
3 Merrimack above FWWT Plant31
4 Merrimack below FWWT Plant30
5 Merrimack Jamie Welch Park10
6 Merrimack Route 4 Bypass63
7 Contoocook at Rivco30
8 Merrimack Sewalls Falls30
9 Merrimack Manchester St10
10 Merrimack Blue Seal10
11 Merrimack Garvins Falls<10

All sample results are as of Tuesday morning, August 6, 2019. Results may change from day-to-day, depending on upstream conditions and rainstorms.

This week, we have very good results. All sites meet the Class B designation for the Merrimack River. They all fall well within the more stringent designated swim beach standards, as well. The watershed had a rinse last week and then went through a dryer cycle for a few days so these values are expected. The upper Merrimack watershed is relatively clean and healthy. We often say, “When it rains, it’s poor.” You may wish to wait a day or so after it rains before recreating in a surface water. 

You’ll hear from us again after the August 20 sampling day. 

Please visit our fresh and newly designed forum at MerrimackRiver.org/forum.
You can also find us at MerrimackRiver.org for further information or don’t hesitate to contact us at UMMP@MerrimackRiver.org or 603.796.2615 should you have any questions.

Sincerely,

Michele L Tremblay                          Stephen C Landry
Program Manager                             Sampling Supervisor

Merrimack watershed bacteria results: July 23, 2019

Dear River and Watershed Friends,

Upper Merrimack Monitoring Program volunteers continue the bacteria sampling season with 100% sampling at 100% of the eleven sites on the Merrimack River from Franklin to Bow and on the Pemigewasset, Winnipesaukee, and Contoocook Rivers. 

The results shown below are the probable number of E. coli bacteria colonies for every 100 millilitres of water. Warm blooded animals (including humans) all have E. coli in their guts. State designated swim beaches are not allowed to exceed 88 colonies and Class B waters (all of our sites are Class B waters) should be below 406 colonies. Here are the details.

Site number and description
1 Pemigewasset41
2 Winnipesaukee185
3 Merrimack above FWWT Plant63
4 Merrimack below FWWT Plant213
5 Merrimack Jamie Welch Park63
6 Merrimack Route 4 Bypass41
7 Contoocook at Rivco134
8 Merrimack Sewalls Falls31
9 Merrimack Manchester St63
10 Merrimack Blue Seal160
11 Merrimack Garvins Falls146

All sample results are as of Tuesday morning, July 23, 2019. Results may change from day-to-day, depending on upstream conditions and rainstorms.

The story this week is that we are seeing some elevated numbers compared to two weeks ago. You will recall that up until this past Tuesday, it has been very dry. Beginning overnight on Monday and into Tuesday, we saw some heavy rains. Rain washes soil, contaminants, and pathogens, such as E. coli, into surface waters such as rivers and ponds. Although this week’s samples are all within the Class B standard, it is a reminder that most pollution in our rivers comes from the land and not from pipes, as was the case before the federal Clean Water Act went into effect. The upper Merrimack watershed is still a relatively clean and healthy river. We often say, “When it rains, it’s poor.” You may wish to wait a day or so after it rains before recreating in a surface water. 

You’ll hear from us again after the August 6 sampling day. 

Please visit our fresh and newly designed forum at MerrimackRiver.org/forum.
You can also find us at MerrimackRiver.org for further information or don’t hesitate to contact us at UMMP@MerrimackRiver.org or 603.796.2615 should you have any questions.

Sincerely,


Michele L Tremblay                          Stephen C Landry
Program Manager                             Sampling Supervisor

Merrimack watershed bacteria results: July 9, 2019

Dear River and Watershed Friends,

Upper Merrimack Monitoring Program volunteers continue the bacteria sampling season with 100% sampling at 100% of the eleven sites on the Merrimack River from Franklin to Bow and on the Pemigewasset, Winnipesaukee, and Contoocook Rivers.

The results shown below are the probable number of E. coli bacteria colonies for every 100 millilitres of water. Warm blooded animals (including humans) all have E. coli in their guts. State designated swim beaches are not allowed to exceed 88 colonies and Class B waters (all of our sites are Class B waters) should be below 406 colonies. Here are the details.

Site number and description
1 Pemigewasset107
2 Winnipesaukee31
3 Merrimack above FWWT Plant<10
4 Merrimack below FWWT Plant10
5 Merrimack Jamie Welch Park<10
6 Merrimack Route 4 Bypass31
7 Contoocook at Rivco20
8 Merrimack Sewalls Falls108
9 Merrimack Manchester St10
10 Merrimack Blue Seal20
11 Merrimack Garvins Falls<10

All sample results are as of Tuesday morning, July 9, 2019. Results may change from day-to-day, depending on upstream conditions and rainstorms.

You’ll hear from us again after the July 23 sampling day. 

Please visit our fresh and newly designed forum at MerrimackRiver.org/forum.
You can also find us at MerrimackRiver.org for further information or don’t hesitate to contact us at UMMP@MerrimackRiver.org or 603.796.2615 should you have any questions.

Sincerely,

Michele L Tremblay                          Stephen C Landry
Program Manager                             Sampling Supervisor